EP1286589A2 - Composition and method for biocide treatment of surfaces - Google Patents

Composition and method for biocide treatment of surfaces

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Publication number
EP1286589A2
EP1286589A2 EP01940669A EP01940669A EP1286589A2 EP 1286589 A2 EP1286589 A2 EP 1286589A2 EP 01940669 A EP01940669 A EP 01940669A EP 01940669 A EP01940669 A EP 01940669A EP 1286589 A2 EP1286589 A2 EP 1286589A2
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EP
European Patent Office
Prior art keywords
weight
composition
water
composition according
biocidal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP01940669A
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German (de)
French (fr)
Inventor
Olivier Anthony
Mathieu Joanicot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rhodia Chimie SAS
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Rhodia Chimie SAS
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Publication of EP1286589A2 publication Critical patent/EP1286589A2/en
Withdrawn legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/40Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
    • A61K8/41Amines
    • A61K8/416Quaternary ammonium compounds
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/08Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
    • A01N25/10Macromolecular compounds
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/30Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests characterised by the surfactants
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N33/00Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds
    • A01N33/02Amines; Quaternary ammonium compounds
    • A01N33/12Quaternary ammonium compounds
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/39Derivatives containing from 2 to 10 oxyalkylene groups
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/40Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
    • A61K8/41Amines
    • A61K8/411Aromatic amines, i.e. where the amino group is directly linked to the aromatic nucleus
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/73Polysaccharides
    • A61K8/737Galactomannans, e.g. guar; Derivatives thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/81Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • A61K8/8141Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • A61K8/8147Homopolymers or copolymers of acids; Metal or ammonium salts thereof, e.g. crotonic acid, (meth)acrylic acid; Compositions of derivatives of such polymers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/84Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/90Block copolymers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q17/00Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
    • A61Q17/005Antimicrobial preparations
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/54Polymers characterized by specific structures/properties
    • A61K2800/542Polymers characterized by specific structures/properties characterized by the charge
    • A61K2800/5426Polymers characterized by specific structures/properties characterized by the charge cationic
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/59Mixtures
    • A61K2800/594Mixtures of polymers

Definitions

  • the subject of the present invention is a composition with a delayed or persistent biocidal effect and a process for the biocidal treatment of skin or keratin surfaces, as well as hard industrial, domestic or corporate surfaces.
  • the present invention also relates to a method of using said aqueous biocidal composition for the treatment and disinfection with lasting effect of skin surfaces, as well as hard industrial, domestic or community surfaces, by slow, gradual release of said biocide after application, by contact with the water of the treated surface.
  • Aqueous biocidal compositions for the treatment of hard surfaces generally have the disadvantage of rapidly losing their effectiveness after their application, in particular when the treated surfaces are then washed.
  • film-forming organic polymers in these compositions, in order to form, after application, a physical barrier making it possible to combat the too rapid release of the biocide.
  • An illustration of this technique (WO 97/06675 from Rhône-Poulenc Chemicals Ltd.) consists in associating with a biocide a terephthalic copolyester having in its polymer chain polyoxyethylene or polyoxyethyleneterephthalate units.
  • H has been proposed (WO 99/18784 by Rhodia Chimie) an aqueous system based on a biocide and a polyorganosil ⁇ xane with polyether functions, as well as its use for the disinfection with a lasting effect of hard surfaces by slow release. , progressive of said biocide after application, by contact with the water of the treated surface.
  • the Applicant has found an aqueous biocidal composition of superior performance. Indeed, this composition applied to the surface to be treated and after evaporation of the water has an effective biocidal action, even after several rinses with water of said treated surface.
  • a first subject of the invention consists of a composition with a delayed or persistent biocidal effect comprising: (a) water,
  • At least one water-soluble block copolymer comprising at least one anionic hydrophilic block and at least one nonionic hydrophilic block.
  • a second object of the invention consists of a method of biocidal treatment of skin surfaces, as well as industrial, domestic or community hard surfaces, with a view to imparting to said surfaces a residual biocidal effect even after several washes or rinses, by application on said surfaces an amount with an effective biocidal effect of an aqueous composition with a residual biocidal effect according to the invention, followed by evaporation of the water.
  • This evaporation of the water can take place at ambient temperature, which is the case in particular for detergent compositions for washing clothes by hand, for rinsing the clothes, for personal hygiene compositions and for cleaning and disinfection of hard industrial, domestic or community surfaces.
  • This evaporation can take place at a temperature above room temperature, which is the case for example for laundry treated and dried in a tumble dryer.
  • an effective amount of the biocide is released (released) each time the surface to be treated is rinsed with water.
  • the number of effective rinses can vary between a few units to several tens.
  • There are other methods for applying the composition. One of these methods consists in precipitating the constituents (b), (c) and (d) of the composition on the surface to be treated without evaporating the water, this water then being eliminated by simple flow.
  • Compound (b) can be a cationic surfactant with a biocidal effect.
  • This compound (b) can also be a polymer with a biocidal effect and, in this case, it is not necessary that this polymer also has surfactant properties.
  • Compound (b) can therefore be a chemical product formed from a surfactant part and from another part with a biocidal effect.
  • product (b) we can cite:
  • R represents a C8-C24 alkyl group
  • R and R which are similar or different, represent a C1-C4 alkyl or hydroxyalkyl group
  • X " is a solubilizing anion such as halide (for example chloride, bromide, iodide), sulphate or methyl sulphate;
  • V 2 'R and R similar or different, represent a C8-C24, y 4' alkyl group
  • R and R which are similar or different, represent a C1-C4 alkyl group
  • X ′′ is a solubilizing anion such as halide (for example chloride, bromide, iodide), sulfate or methyl sulfate; - the products of formula:
  • R represents a C8-C24 alkyl group
  • X " is a solubilizing anion such as halide (for example chloride, bromide, iodide), sulphate or methyl sulphate.
  • halide for example chloride, bromide, iodide
  • sulphate or methyl sulphate.
  • heterocyclic monoquaternary amines such as the chlorides of laurylpyridinium, of cetylpyridinium, of C12-C14 alkyl benzyl imidazolium, as well as the salts of fatty alkyl triphenyl phosphonium such as myristyl triphenyl phosphonium bromide.
  • cationic polymer biocides without notable surfactant properties such as those originating from the reaction: epichlorohydrin and dimethylamine or diethylamine 1,3-dichloro-2-propanol epichlorohydrin and imidazole and 1,3-dichloro-2-propanol dimethylamine and 1,3-bis (dimethylamino) -2-propanol of ethylene dichloride and 1,3-bis (dimethyl-amino) -2-propanol - bis (2-chloroethyl) ether and N, N'-bis (dimethylaminopropyl) urea or thiourea
  • a polymer biocide which is more particularly suitable is the product of the reaction of dimethylamine with epichlorohydrin and sold in particular under the name GLOKILL by the company RHODIA. This polymer has units of formula
  • n is an integer whose value gives the polymer a molecular weight by weight of between 1000 and 20,000, generally between 5,000 and 11,000.
  • Compound (c) is a film-forming polymer forming a transparent film after evaporation of the water contained in the composition deposited on the surface to be treated.
  • an anionic guar is obtained by reacting a natural guar with a base and then with a monochloroacetate in order to obtain a carboxymethyl guar.
  • anionic guar can be used in the context of the present invention are marketed under the tradenames GALAXY ® 707D by Aqualon and JAGUAR 800 JAGUAR ® and 8707 ® marketed by Hi-Tek.
  • Compound (d) is a water-soluble block copolymer comprising at least one anionic hydrophilic block and at least one nonionic hydrophilic block. These copolymers have a number-average molecular weight generally between 2,000 and 20,000, preferably between 4,000 and 10,000 g / mole.
  • the anionic blocks include for example polymethacrylic acid and its salts, polyacrylic acid and its salts, copolymers of methacrylic acid and its salts, copolymers of acrylic acid and its salts, heparin, polyphosphate, polyamino acids such as polyaspartic acid, polyglutamic acid, polymalic acid, polylactic acid.
  • the anionic blocks preferred in the context of the present invention are the blocks having in the polymer chain carboxylic groups.
  • Examples of monomers making it possible to prepare such blocks are acrylic acid, aspartic acid, citraconic acid, p-hydroxy cinnamic acid, trans-glutaconic acid, glutamic acid, itaconic acid , linoleic acid, methacrylic acid, maleic acid, oleic acid, maleic anhydride, mesaconic acid, 2-propene 1-sulfonic acid and vinylsulfonic acid.
  • Nonionic blocks include, for example, polyether glycols, in other words polyethylene oxides, propylene polyoxides, copolymers of ethylene oxide and propylene oxide, polysaccharides, polyacrylamides, polyacrylic esters, polymethacrylamide , polyvinyl alcohol, polyvinyl pyrrolidone, polyortho esters, polyamino acids, and polyglycerols.
  • polyether glycols in other words polyethylene oxides, propylene polyoxides, copolymers of ethylene oxide and propylene oxide, polysaccharides, polyacrylamides, polyacrylic esters, polymethacrylamide , polyvinyl alcohol, polyvinyl pyrrolidone, polyortho esters, polyamino acids, and polyglycerols.
  • anionic polymerization with the sequential addition of two monomers as for example described by Scmolka, J. Am. Oil Chem. Soc. 1977, 54, 110; or else Wilczek-
  • Another usable method consists in initiating the polymerization of a polymer block at each of the ends of another polymer block as for example described by Katayose and Kataoka, Proc . Intern. Symp. Control. Rel. Bioact. Materials, 1996, 23, 899.
  • this type of polymerization more particularly recommended are the block copolymers which can be obtained by any process of so-called living or controlled polymerization such as, for example:
  • ATRP - radical polymerization by atom transfer
  • composition according to the invention can also optionally comprise a nonionic surfactant (e).
  • nonionic surfactant e
  • compound (b) which can be used in the compositions according to the present invention, mention may also be made of: - polyoxyalkylenated (polyoxyethylenated, polyoxypropylenated, polyoxybutylenated) alkylphenols in which the alkyl substituent is C 6 -C 12 and containing from 5 to 25 oxyalkylene units; by way of example, mention may be made of the Triton X-45, X-114, X-100 or X-102 sold by Rohm & Haas Cy. ;
  • TERGITOL 15-S-9 TERGITOL 24-L-6 NMW sold by Union Carbide Corp.
  • NEODOL 45-9 NEODOL 23-65, NEODOL 45-7, NEODOL 45-4 marketed by Shell Chemical Cy.
  • RHODASURF IDO60 RHODASURF LA90, RHODASURF IT070 marketed by the company RHODIA.
  • amine oxides such as C10-8 dimethylamine alkyl oxides, C8-C22 alkoxy ethyl dihydroxy ethylamine oxides;
  • compositions according to the invention are in the form of a monophasic aqueous solution of all of its constituents, which is a desirable property and difficult to obtain for compositions of this type.
  • the Applicant is of the opinion that the compound (b) and the compound (a) combine in aggregates or micelles whose size is of the order of a few tens of nanometers.
  • the core of the aggregate would be formed of a coalescat of the anionic part (d) with the compound (b).
  • These aggregates have a sufficient size to remain trapped in the film-forming polymer network (c) after application of the solution and evaporation of the water.
  • the particulate structure of this coalescat ensures a slow and appropriate release of the biocide during rinsing.
  • the compositions according to the present invention comprise: (a) 100 parts by weight of water,
  • compositions according to the present invention comprise: (a) 100 parts by weight of water,
  • biocidal surfactant used depends on the desired application (personal hygiene, disinfection of various hard surfaces).
  • biocidal agent (b) The quantity of biocidal agent (b) to be used depends on the field of application for which the method of the invention is implemented.
  • the amount of biocide (b) used is generally of the order of 0.05 to 0.3% to comply with the legislation in force.
  • biocidal composition used to carry out the process of the invention may be of different type, depending on the field of application for which the process of the invention is implemented.
  • It may be a body hygiene composition for the hair or the skin, in particular in the form of shampoos, lotions, shower gels, for the hair or the body, liquid soaps for the face or the body. .
  • biocidal compositions for the treatment of hard surfaces can also comprise additives such as chelating agents such as aminocarboxylates (ethylenediaminetetraacetates, nitrilotriacetates, N, N-bis (carboxymethyl) glutamates, citrates), alcohols (ethanol, isopropanol, glycols ), detergency builders (phosphates, silicates), surfactants, colorants, perfumes or the like.
  • chelating agents such as aminocarboxylates (ethylenediaminetetraacetates, nitrilotriacetates, N, N-bis (carboxymethyl) glutamates, citrates), alcohols (ethanol, isopropanol, glycols ), detergency builders (phosphates, silicates), surfactants, colorants, perfumes or the like.
  • Hair and skin hygiene compositions may also contain surfactants, humectants, emollients, viscosifiers or gelling agents, sequestering agents, conditioning agents, colorants, perfumes or the like.
  • Said biocidal treatment process for the surfaces which are the subject of the invention can be used to carry out the treatment of keratinous or cutaneous body surfaces, of various hard surfaces, such as tiles, floors, walls, work surfaces, equipment. , furniture, instruments, ... in industry, the food industry, domestic areas (kitchens, bathrooms, sanitary ...) and communities.
  • hard surfaces which can be treated, mention may in particular be made of ceramic, porcelain, glass, polyvinyl chloride, formica or other hard organic polymer, stainless steel, aluminum, wood, etc.
  • the disinfection operation consists in applying or bringing into contact said aqueous biocidal composition, optionally diluted from 1 to 1000 times, preferably from 1 to 100 times, on or with the surface to be treated, then allowing the water to evaporate. .
  • Gram negative bacteria such as: Pseudomonas aeruginosa; Escherichia coli; Proteus mirabilis
  • Gram positive bacteria such as: Staphylococcus aureus; Streptococcus faecium .
  • other dangerous bacteria in the diet such as: Salmonella tvphimurium; Listeria monocvto ⁇ enes; Campylobacter jejuni; Yersinia enterocolitica
  • yeasts such as: Saccharomyces cerevisiae; Candida albicans.
  • fungi such as: Aspergillus niger; Fusarium solani; Pencillium chrvsoqenum
  • algae such as: Chlorella saccharophilia; Chlorella emersonii; Chlorella vul ⁇ aris; Chlamydomonas eugametos
  • the hydrolysis of the PAEt-b-PVAc copolymer described in Example 1 is carried out in the synthesis reactor of the diblock polymer used in Example 1, on an equivalent of 400 g of dry matter (i.e. 1045 g of latex at 38 , 25% dry extract).
  • the pH of the latex is adjusted to 8 with a 1N sodium hydroxide solution.
  • the reactor is heated to 60 ° C. and maintained under a stream of nitrogen. With vigorous stirring, 1115 g of 4N sodium hydroxide are added for 1 hour. The system is kept at this temperature for 11 hours.
  • the final dry extract is 16.25%.
  • a sample taken at the end of the reaction is analyzed by 1 H NMR. The analysis confirms the disappearance of the peaks characteristic of the acrylic esters and of the acetate group.
  • the di-block sodium polyacrylate / polyvinyl alcohol copolymer synthesized according to Example 2 is used.
  • the polyvinyl alcohol and sodium polyacrylate blocks respectively contain 184 polyvinyl alcohol monomers and 44 sodium acrylate monomers.
  • the copolymer is then purified in the following manner: a 5% by weight solution of the copolymer in water is precipitated dropwise in a large excess of acetone, then redissolved in water. We do it twice this cycle to obtain a very transparent pale yellow solution.
  • the pH is then adjusted to 10 by adding sodium hydroxide. The number-average molecular mass of this polymer is 20,200.
  • the biocide used is benzyl dodecyl dimethyl ammonium chloride.
  • the isotherm of fixation of benzyl dodecyl dimethyl ammonium chloride on the di-block copolymer sodium polyacrylate / polyvinyl alcohol was determined by potentiometry using an electrode specific to this cationic surfactant. The results obtained are collated in Table 1 below.
  • the electrode is as follows: Ag / AgCI
  • C tot is the concentration total of added surfactant, C, the concentration of free surfactant, not attached to the polym re, and the C s binding sites on the polymer concentration, that is to say the charge concentration.
  • C is determined using a calibration curve previously established in the absence of copolymer. As indicated in table 1, the appearance of a slight turbidity is observed for values of ⁇ close to 1, that is to say when the charges of the fixed surfactants compensate for the charges present on the acrylic acid block of the copolymer di-block.
  • Example 3 For comparison, the procedure of Example 3 is repeated exactly except that the di-block copolymer is replaced by an acid homopolymer acrylic comprising 111 acrylic acid units per polymer chain.
  • the pH was also adjusted to 10 with sodium hydroxide (Table 1).
  • the polymer concentration was adjusted so that the concentration of sodium acrylate units was equal to that used in the experiment carried out with the di-block, that is to say 0.03% by weight.
  • the concentration of critical aggregation (cac), that is to say the minimum concentration above which the fixation of the surfactant on the polymer, of benzyl dodecyl dimethyl ammonium chloride is observed is substantially the same as for the di-block copolymer: approximately 9 ⁇ 10 -4 % by weight.
  • the solution becomes slightly cloudy for a value of ⁇ close to 0.1 and macroscopic precipitation is observed for a value of ⁇ close to 0.8 , these two phenomena do not appear with the di-block.
  • Table 1 Isotherm for fixing benzyl dodecyl dimethyl ammonium chloride on the sodium polyacrylate / polyvinyl alcohol di-block copolymer (diblock copolymer) and on a sodium acrylate homopolymer (PAA).
  • the di-block copolymer and the biocidal cationic surfactant described in Example 3 are again used in a more concentrated formulation.
  • a solution of 1.5% by weight of cationic surfactant and 1% by weight of di-block copolymer is prepared.
  • This complex is completely redissolved by the addition of a total concentration of 5% by weight of nonionic surfactant (RHODASURF DA639, an isododecyl ether hexaoxyethylene glycol sold by the company Rhodia).
  • RHODASURF DA639 an isododecyl ether hexaoxyethylene glycol sold by the company Rhodia.
  • This redissolution shows the co-micellization of the cationic and neutral surfactants on the polymer.
  • the nonionic surfactant provides sufficient hydrophilicity to avoid phase separation.
  • aqueous anionic guar solution is then added (carboxymethyl guar, CMG, of molecular mass 2.3 million and degree of anionic substitution of 0.10).
  • carboxymethyl guar is 0.15%.
  • the addition of this polymer does not induce phase separation in the solution. A single-phase detergent solution is thus obtained.
  • the cationic and nonionic surfactants, as well as the block copolymer and the anionic guar are identical to those of Example 4.
  • the covered surface of the dried film is then sprayed with water using a spray bottle. Each spray projects 1 ml of water onto the surface. The liquid falling from the surface is collected in the beaker, and 2.5 ml is taken from the beaker after each spraying.
  • the benzyl dodecyl dimethyl ammonium chloride concentration is determined by measuring the UV absorbance of the solution sampled at 262.5 nm and by referring to a calibration curve carried out previously. We used for this measurement a Hitachi model U3410 spectrometer.
  • This concentration allows us to calculate the amount of benzyl dodecyl dimethyl ammonium chloride remaining on the tiles despite rinsing.
  • the results are collated in Table 2 below giving the percentage of benzyl dodecyl dimethyl ammonium chloride remaining on the surface of the tiling as a function of the number of rinses.
  • Formula A 1.5% by weight of benzyl dodecyl dimethyl ammonium chloride
  • Formula B 1.5% by weight of benzyl dodecyl dimethyl ammonium chloride
  • Formula C 1.5% by weight of benzyl dodecyl dimethyl ammonium chloride
  • GLOKILL PQ is added, which is a biocidal polymer of quaternary amine positively charged at all pH, product marketed by RHODIA.
  • the structure of the recurring units of this polymer biocide is as follows:
  • n is an integer whose value gives the polymer a molecular weight by weight of between 5,000 and 11,000.
  • the di-block copolymer described in Example 3 is again used and as a cationic agent with a biocidal effect, GLOKILL used in Example 6 above is added.
  • the composition also contains the neutral surfactant and is prepared in the following manner:
  • the nonionic surfactant described in Example 4 (RHODASURF DA639, an isododecyl ether hexaoxyethylene glycol) and GLOKILL are added in order to obtain a solution of 0.6% by weight in di-block , 0.156% by weight in GLOKILL and 5% in nonionic surfactant.

Abstract

The invention concerns an aqueous composition and a method for biocide treatment of surfaces, said composition comprising: (a) water, (b) a cationic surfactant having biocide effect and/or a cationic polymer having biocide effect, (c) a film-forming polymer forming a transparent film, (d) at least a water soluble block copolymer comprising at least an non-ionic hydrophilic block and at least a non-ionic hydrophilic block, and (e) optionally, a non-ionic surfactant. The composition is useful as biocide composition with persistent effect for treating surfaces, the biocide effect on the surface to be treated being preserved after rinsing several times.

Description

COMPOSITION ET PROCEDE POUR LE TRAITEMENT BIOCIDE DES COMPOSITION AND METHOD FOR THE BIOCIDAL TREATMENT OF
SURFACESSURFACES
La présente invention a pour objet une composition à effet biocide retard ou rémanent et un procédé de traitement biocide des surfaces cutanées ou kératiniques, ainsi que des surfaces dures industrielles, domestiques ou de collectivités.The subject of the present invention is a composition with a delayed or persistent biocidal effect and a process for the biocidal treatment of skin or keratin surfaces, as well as hard industrial, domestic or corporate surfaces.
La présente invention vise également un procédé d'utilisation de ladite composition biocide aqueuse pour le traitement et la désinfection à effet durable des surfaces cutanées, ainsi que des surfaces dures industrielles, domestiques ou de collectivités, par libération lente, progressive dudit biocide après application, par contact avec l'eau de la surface traitée.The present invention also relates to a method of using said aqueous biocidal composition for the treatment and disinfection with lasting effect of skin surfaces, as well as hard industrial, domestic or community surfaces, by slow, gradual release of said biocide after application, by contact with the water of the treated surface.
Les compositions biocides aqueuses pour le traitement des surfaces dures présentent généralement le désavantage de perdre rapidement leur efficacité après leur application, notamment lorsque les surfaces traitées sont ensuite lavées. Pour pallier cet inconvénient, il a été proposé de mettre en oeuvre dans ces compositions des polymères organiques filmogènes, afin de former après application une barrière physique permettant de lutter contre la libération trop rapide du biocide. Une illustration de cette technique (WO 97/06675 de Rhône- Poulenc Chemicals Ltd.) consiste à associer à un biocide un copolyester téréphtalique présentant dans sa chaîne polymère des unités polyoxyéthylènes ou polyoxyéthylènetéréphtalates.Aqueous biocidal compositions for the treatment of hard surfaces generally have the disadvantage of rapidly losing their effectiveness after their application, in particular when the treated surfaces are then washed. To overcome this drawback, it has been proposed to use film-forming organic polymers in these compositions, in order to form, after application, a physical barrier making it possible to combat the too rapid release of the biocide. An illustration of this technique (WO 97/06675 from Rhône-Poulenc Chemicals Ltd.) consists in associating with a biocide a terephthalic copolyester having in its polymer chain polyoxyethylene or polyoxyethyleneterephthalate units.
Par ailleurs, H a été proposé (WO 99/18784 de Rhodia Chimie) un système aqueux à base d'un biocide et d'un polyorganosilσxane à fonctions polyéther, ainsi que son utilisation pour la désinfection à effet durable des surfaces dures par libération lente, progressive dudit biocide après application, par contact avec l'eau de la surface traitée.Furthermore, H has been proposed (WO 99/18784 by Rhodia Chimie) an aqueous system based on a biocide and a polyorganosilσxane with polyether functions, as well as its use for the disinfection with a lasting effect of hard surfaces by slow release. , progressive of said biocide after application, by contact with the water of the treated surface.
La Demanderesse a trouvé une composition biocide aqueuse de performances supérieures. En effet cette composition appliquée sur la surface à traiter et après évaporation de l'eau, présente une action biocide efficace, même après plusieurs rinçages à l'eau de ladite surface traitée.The Applicant has found an aqueous biocidal composition of superior performance. Indeed, this composition applied to the surface to be treated and after evaporation of the water has an effective biocidal action, even after several rinses with water of said treated surface.
Un premier objet de l'invention consiste en une composition à effet biocide retard ou rémanent comportant : (a) de l'eau,A first subject of the invention consists of a composition with a delayed or persistent biocidal effect comprising: (a) water,
(b) un tensioactif cationique ayant un effet biocide,(b) a cationic surfactant having a biocidal effect,
(c) un polymère filmogène formant un film transparent et,(c) a film-forming polymer forming a transparent film and,
(d) au moins un copolymère à blocs hydrosoluble comportant au moins un bloc hydrophile anionique et au moins un bloc hydrophile non ionique.(d) at least one water-soluble block copolymer comprising at least one anionic hydrophilic block and at least one nonionic hydrophilic block.
Un second objet de l'invention consiste en un procédé de traitement biocide des surfaces cutanées, ainsi que des surfaces dures industrielles, domestiques ou de collectivités, en vue de conférer aux dites surfaces un effet biocide rémanent même après plusieurs lavages ou rinçages, par application sur lesdites surfaces d'une quantité à effet biocide efficace d'une composition aqueuse à effet biocide rémanent conforme à l'invention, suivie d'une évaporation de l'eau. Cette évaporation de l'eau peut se faire à température ambiante ce qui est le cas notamment pour les compositions détergentes pour le lavage du linge à la main, pour le rinçage du linge, pour les compositions d'hygiène corporelle et pour le nettoyage et la désinfection des surfaces dures industrielles, domestiques ou de collectivités. Cette évaporation peut se faire à température supérieure à la température ambiante, ce qui est le cas par exemple pour le linge traité et séché au sèche-linge. Au cours d'étapes ultérieures du procédé, une quantité efficace du biocide est relarguée (libérée) à chaque rinçage à l'eau de la surface à traiter. Le nombre de rinçages efficaces peut varier entre quelques unités à plusieurs dizaines. Il existe d'autres procédés pour appliquer la composition. Un de ces procédés consiste à précipiter les constituants (b), (c) et (d) de la composition sur la surface à traiter sans évaporer l'eau, cette eau étant ensuite éliminée par simple écoulement. Le composé (b) peut être un tensioactif cationique à effet biocide. Ce composé (b) peut être également un polymère à effet biocide et, dans ce cas, il n'est pas nécessaire que ce polymère possède également des propriétés tensioactives. Le composé (b) peut être donc un produit chimique formé d'une partie tensioactive et d'une autre partie à effet biocide. Comme exemples de produit (b) on peut citer :A second object of the invention consists of a method of biocidal treatment of skin surfaces, as well as industrial, domestic or community hard surfaces, with a view to imparting to said surfaces a residual biocidal effect even after several washes or rinses, by application on said surfaces an amount with an effective biocidal effect of an aqueous composition with a residual biocidal effect according to the invention, followed by evaporation of the water. This evaporation of the water can take place at ambient temperature, which is the case in particular for detergent compositions for washing clothes by hand, for rinsing the clothes, for personal hygiene compositions and for cleaning and disinfection of hard industrial, domestic or community surfaces. This evaporation can take place at a temperature above room temperature, which is the case for example for laundry treated and dried in a tumble dryer. In subsequent process steps, an effective amount of the biocide is released (released) each time the surface to be treated is rinsed with water. The number of effective rinses can vary between a few units to several tens. There are other methods for applying the composition. One of these methods consists in precipitating the constituents (b), (c) and (d) of the composition on the surface to be treated without evaporating the water, this water then being eliminated by simple flow. Compound (b) can be a cationic surfactant with a biocidal effect. This compound (b) can also be a polymer with a biocidal effect and, in this case, it is not necessary that this polymer also has surfactant properties. Compound (b) can therefore be a chemical product formed from a surfactant part and from another part with a biocidal effect. As examples of product (b) we can cite:
- les sels de monoammonium quaternaire de formules- quaternary monoammonium salts of formulas
R1 R2 R3 R4 N+ X" où R représente un groupe benzyle éventuellement substitué par un atome de chlore ou un groupe C1-C4 alkylbenzyle, oR 1 R 2 R 3 R 4 N + X " where R represents a benzyl group optionally substituted by a chlorine atom or a C1-C4 alkylbenzyl group, o
R représente un groupe alkyle en C8-C24,R represents a C8-C24 alkyl group,
3 43 4
R et R , semblables ou différents, représentent un groupe alkyle ou hydroxyalkyle en C1-C4, etR and R, which are similar or different, represent a C1-C4 alkyl or hydroxyalkyl group, and
X" est un anion solubilisant tel qu'halogenure (par exemple chlorure, bromure, iodure), sulfate ou méthylsulfate ;X " is a solubilizing anion such as halide (for example chloride, bromide, iodide), sulphate or methyl sulphate;
- les produits de formule :- formula products:
R1' R2' R3' R4' N+ X"R 1 'R 2 ' R 3 'R 4 ' N + X " where
V 2' R et R , semblables ou différents, représentent un groupe alkyle en C8-C24, y 4'V 2 'R and R, similar or different, represent a C8-C24, y 4' alkyl group
R et R , semblables ou différents , représentent un groupe alkyle en C1-C4, et X" est un anion solubilisant tel qu'halogenure (par exemple chlorure, bromure, iodure), sulfate ou méthylsulfate ; - les produits de formule :R and R, which are similar or different, represent a C1-C4 alkyl group, and X is a solubilizing anion such as halide (for example chloride, bromide, iodide), sulfate or methyl sulfate; - the products of formula:
1" 9" y 4" + - R 1 R Rύ R4 N X où1 "9" y 4 "+ - R 1 RR ύ R 4 NX where
1" R représente un groupe alkyle en C8-C24,1 "R represents a C8-C24 alkyl group,
?" 3" 4" R , R et R , semblables ou différents , représentent un groupe alkyle en C - C4, et? "3" 4 "R, R and R, similar or different, represent a C - C4 alkyl group, and
X" est un anion solubilisant tel qu'halogenure (par exemple chlorure, bromure, iodure), sulfate ou méthylsulfate.X " is a solubilizing anion such as halide (for example chloride, bromide, iodide), sulphate or methyl sulphate.
On peut plus particulièrement citer les chlorures de coco-alkyl benzyl diméthylammonium, de C12- 14 alkyl benzyl diméthylammonium, de coco-alkyl dichlorobenzyl diméthylammonium, de tétradécyl benzyl diméthylammonium, de didécyl diméthylammonium, ou de dioctyl diméthylammonium. Conviennent également, les sels d'aminés hétérocycliques monoquaternaires tels que les chlorures de laurylpyridinium, de cétylpyridinium, de C12-C14 alkyl benzyl imidazolium, ainsi que les sels d'alkyl gras triphényl phosphonium comme le bromure de myristyl triphényl phosphonium.Mention may more particularly be made of chlorides of coco-alkyl benzyl dimethylammonium, of C12-14 alkyl benzyl dimethylammonium, of coco-alkyl dichlorobenzyl dimethylammonium, of tetradecyl benzyl dimethylammonium, of didecyl dimethylammonium, or of dioctyl dimethylammonium. Also suitable are the salts of heterocyclic monoquaternary amines such as the chlorides of laurylpyridinium, of cetylpyridinium, of C12-C14 alkyl benzyl imidazolium, as well as the salts of fatty alkyl triphenyl phosphonium such as myristyl triphenyl phosphonium bromide.
Conviennent également les biocides polymères cationiques sans proprieties tensioactives notables comme ceux provenant de la réaction: d'épichlorhydrine et de diméthylamine ou de diéthylamine de l'épichlorhydrine et d'imidazole de 1 ,3-dichloro-2-propanol et de diméthylamine de 1 ,3-dichloro-2-propanol et du 1 ,3-bis(diméthylamino)-2-propanol du dichlorure d'éthylène et du 1 ,3-bis(diméthyl-amino)-2-propanol - de bis(2-chloroéthyl) éther et de N,N'-bis(diméthylaminopropyl)urée ou thiouréeAlso suitable are cationic polymer biocides without notable surfactant properties such as those originating from the reaction: epichlorohydrin and dimethylamine or diethylamine 1,3-dichloro-2-propanol epichlorohydrin and imidazole and 1,3-dichloro-2-propanol dimethylamine and 1,3-bis (dimethylamino) -2-propanol of ethylene dichloride and 1,3-bis (dimethyl-amino) -2-propanol - bis (2-chloroethyl) ether and N, N'-bis (dimethylaminopropyl) urea or thiourea
Un biocide polymère convenant plus particulièrement est le produit de la réaction de la diméthylamine avec l'épichlorhydrine et commercialisé notamment sous l'appellation GLOKILL par la société RHODIA. Ce polymère présente des motifs de formuleA polymer biocide which is more particularly suitable is the product of the reaction of dimethylamine with epichlorohydrin and sold in particular under the name GLOKILL by the company RHODIA. This polymer has units of formula
où n est un nombre entier dont la valeur confère au polymère une masse moléculaire en poids comprise entre 1000 et 20 000, généralement entre 5 000 et 11 000. Le composé (c) est un polymère filmogene formant un film transparent après évaporation de l'eau contenue dans la composition déposée sur la surface à traiter. Comme composé (c) on recommande d'utiliser de préférence une guar anionique. Une guar anionique est obtenue par réaction d'une guar naturelle avec une base et ensuite avec un monochloroacétate en vue d'obtenir une guar carboxyméthyle. Des exemples de guars anioniques pouvant être utilisées dans le cadre de la présente invention sont commercialisées sous les noms commerciaux GALAXY 707D® par la société Aqualon, et JAGUAR 800® ou JAGUAR 8707® commercialisées par la société Hi Tek. Le composé (d) est un copolymère à blocs hydrosoluble comportant au moins un bloc hydrophile anionique et au moins un bloc hydrophile non ionique. Ces copolymères présentent une masse moléculaire en nombre généralement comprise entre 2 000 et 20 000, de préférence entre 4 000 et 10 000 g/mole. Les blocs anioniques incluent par exemple l'acide polyméthacrylique et ses sels, l'acide polyacrylique et ses sels, les copolymères de l'acide méthacrylique et ses sels, les copolymères de l'acide acrylique et ses sels, l'héparine, le polyphosphate, les polyamino acides tels que l'acide polyaspartique, l'acide polyglutamique, l'acide polymalique, l'acide polylactique. Les blocs anioniques préférés dans le cadre de la présente invention sont les blocs présentant dans la chaîne polymère des groupes carboxyliques. Des exemples de monomères permettant de préparer de tels blocs sont l'acide acrylique, l'acide aspartique, l'acide citraconique, l'acide p-hydroxy cinnamique, l'acide trans-glutaconique, l'acide glutamique, l'acide itaconique, l'acide linoléique, l'acide méthacrylique, l'acide maléique, l'acide oléique, l'anhydride maléique, l'acide mésaconique, l'acide 2-propène 1-sulfonique et l'acide vinylsulfonique. where n is an integer whose value gives the polymer a molecular weight by weight of between 1000 and 20,000, generally between 5,000 and 11,000. Compound (c) is a film-forming polymer forming a transparent film after evaporation of the water contained in the composition deposited on the surface to be treated. As compound (c) it is recommended to preferably use an anionic guar. An anionic guar is obtained by reacting a natural guar with a base and then with a monochloroacetate in order to obtain a carboxymethyl guar. Examples of anionic guar can be used in the context of the present invention are marketed under the tradenames GALAXY ® 707D by Aqualon and JAGUAR 800 JAGUAR ® and 8707 ® marketed by Hi-Tek. Compound (d) is a water-soluble block copolymer comprising at least one anionic hydrophilic block and at least one nonionic hydrophilic block. These copolymers have a number-average molecular weight generally between 2,000 and 20,000, preferably between 4,000 and 10,000 g / mole. The anionic blocks include for example polymethacrylic acid and its salts, polyacrylic acid and its salts, copolymers of methacrylic acid and its salts, copolymers of acrylic acid and its salts, heparin, polyphosphate, polyamino acids such as polyaspartic acid, polyglutamic acid, polymalic acid, polylactic acid. The anionic blocks preferred in the context of the present invention are the blocks having in the polymer chain carboxylic groups. Examples of monomers making it possible to prepare such blocks are acrylic acid, aspartic acid, citraconic acid, p-hydroxy cinnamic acid, trans-glutaconic acid, glutamic acid, itaconic acid , linoleic acid, methacrylic acid, maleic acid, oleic acid, maleic anhydride, mesaconic acid, 2-propene 1-sulfonic acid and vinylsulfonic acid.
Les blocs non ioniques incluent par exemple les polétherglycols, autrement dit les polyoxydes d'éthylène, les polyoxydes de propylène, les copolymères d'oxyde d'éthylène et d'oxyde de propylène, les polysaccharides, les polyacrylamides, les esters polyacryliques, le polyméthacrylamide, l'alcool polyvinylique, la polyvinyl pyrrolidone, les polyortho esters, les polyamino acides, et les polyglycérols. Pour préparer les polymères à blocs on peut par exemple utiliser la polymérisation anionique avec addition séquentielle de deux monomères comme par exemple décrit par Scmolka, J. Am. Oil Chem. Soc. 1977, 54. 110 ; ou bien encore Wilczek-Veraet al., Macromolecules 1996, 29, 4036. Un autre procédé utilisable consiste à initialiser la polymérisation d'un bloc polymère à chacune des extrémités d'un autre bloc polymère comme par exemple décrit par Katayose et Kataoka, Proc. Intern. Symp. Control. Rel. Bioact. Materials, 1996, 23, 899. Dans le cadre de la présente invention, on recommande d'utiliser la polymérisation vivante ou contrôlée comme définie par Quirk et Lee (Polymer International 27, 359 (1992). En effet ce procédé particulier permet de préparer des polymères de dispersité étroite et dont la longueur et la composition des blocs sont contrôlées par la stœchiométrie et le degré de conversion. Dans le cadre de ce type de polymérisation, sont plus particulièrement recommandés les copolymères à blocs qui peuvent être obtenus par tout procédé de polymérisation dite vivante ou contrôlée tel que, par exemple :Nonionic blocks include, for example, polyether glycols, in other words polyethylene oxides, propylene polyoxides, copolymers of ethylene oxide and propylene oxide, polysaccharides, polyacrylamides, polyacrylic esters, polymethacrylamide , polyvinyl alcohol, polyvinyl pyrrolidone, polyortho esters, polyamino acids, and polyglycerols. To prepare the block polymers, it is possible, for example, to use anionic polymerization with the sequential addition of two monomers as for example described by Scmolka, J. Am. Oil Chem. Soc. 1977, 54, 110; or else Wilczek-Veraet al., Macromolecules 1996, 29, 4036. Another usable method consists in initiating the polymerization of a polymer block at each of the ends of another polymer block as for example described by Katayose and Kataoka, Proc . Intern. Symp. Control. Rel. Bioact. Materials, 1996, 23, 899. In the context of the present invention, it is recommended to use living or controlled polymerization as defined by Quirk and Lee (Polymer International 27, 359 (1992). Indeed, this particular process makes it possible to prepare polymers of narrow dispersity and whose length and composition of the blocks are controlled by stoichiometry and the degree of conversion.In this type of polymerization, more particularly recommended are the block copolymers which can be obtained by any process of so-called living or controlled polymerization such as, for example:
- la polymérisation radicalaire contrôlée par les xanthates selon l'enseignement de la demande WO 98/58974, - la polymérisation radicalaire contrôlée par les dithioesters selon l'enseignement de la demande WO 97/01478- radical polymerization controlled by xanthates according to the teaching of application WO 98/58974, - radical polymerization controlled by the dithioesters according to the teaching of the application WO 97/01478
- la polymérisation à l'aide de précurseurs nitroxydes selon l'enseignement de la demande WO 99/03894, - la polymérisation radicalaire contrôlée par les dithiocarbamates selon l'enseignement de la demande WO 99/31144,- polymerization using nitroxide precursors according to the teaching of application WO 99/03894, - radical polymerization controlled by dithiocarbamates according to the teaching of application WO 99/31144,
- la polymérisation radicalaire par transfert d'atome (ATRP) selon l'enseignement de la demande WO 96/30421 ,- radical polymerization by atom transfer (ATRP) according to the teaching of application WO 96/30421,
- la polymérisation radicalaire contrôlée par les iniferters selon l'enseignement de Otu et al., Makromol. Chem. Rapid. Commun., 3, 127 (1982),- radical polymerization controlled by iniferters according to the teaching of Otu et al., Makromol. Chem. Rapid. Commun., 3, 127 (1982),
- la polymérisation radicalaire contrôlée par transfert dégénératif d'iode selon l'enseignement de Tatemoto et al., Jap. 50, 127, 991 (1975), Daikin Kogyo Co Itd Japan et Matyjaszewski et al., Macromolecules, 28, 2093 (1995)),- radical polymerization controlled by degenerative transfer of iodine according to the teaching of Tatemoto et al., Jap. 50, 127, 991 (1975), Daikin Kogyo Co Itd Japan and Matyjaszewski et al., Macromolecules, 28, 2093 (1995)),
- la polymérisation par transfert de groupe selon l'enseignement de Webster O.W. "Group Transfer Polymerization", p. 580-588 de 'Εncyclopedia of Polymer- group transfer polymerization according to the teaching of Webster O.W. "Group Transfer Polymerization", p. 580-588 of 'Εncyclopedia of Polymer
Science and Engineering", vol.7 et H. F. Mark, N.M. Bikales, C.G. Overberger and G. Menges, Eds., Wiley Interscience, New York, 1987,Science and Engineering ", vol. 7 and H. F. Mark, N.M. Bikales, C.G. Overberger and G. Menges, Eds., Wiley Interscience, New York, 1987,
- la polymérisation radicalaire contrôlée par les dérivés du tétraphényléthane (D. Braun ét al. Macromol.Symp. 111 ,63 (1996)), - la polymérisation radicalaire contrôlée par les complexes organocobalt- radical polymerization controlled by tetraphenylethane derivatives (D. Braun et al. Macromol.Symp. 111, 63 (1996)), - radical polymerization controlled by organocobalt complexes
(Wayland ét al. J.Am.Chem.Soc. 116,7973 (1994)) .(Wayland et al. J. Am. Chem. Soc. 116.7973 (1994)).
La composition selon l'invention peut en outre éventuellement comprendre un tensioactif non ionique (e). Comme tensioactif non ionique (e), on peut citer en particulier les condensats d'oxyde d'alkylène ayant de 1 à 4 atomes de carbone, notamment d'oxyde d'éthylène avec des alcools, des polyols, des alkylphenols, des esters d'acides gras, des amides d'acides gras et des aminés grasses ; les amines-oxydes, les dérivés de sucre tels que les alkylpolyglycosides ou les esters d'acides gras et de sucres, notamment le monopalmitate de saccharose ; les oxydes de phosphine tertiaire à longue chaîne ; les dialkylsulfoxydes ; les copolymères séquences de polyoxyéthylène et de polyoxypropylene ; les esters de sorbitan polyalkoxylés ; les esters gras de sorbitan, les poly(oxyde d'éthylène) et amides d'acides gras modifiés de manière à leur conférer un caractère hydrophobe (par exemple, les mono- et diéthanolamides d'acides gras contenant de 10 à 18 atomes de carbone).The composition according to the invention can also optionally comprise a nonionic surfactant (e). As nonionic surfactant (e), mention may be made in particular of condensates of alkylene oxide having from 1 to 4 carbon atoms, in particular of ethylene oxide with alcohols, polyols, alkylphenols, esters of fatty acids, fatty acid amides and fatty amines; amine oxides, sugar derivatives such as alkylpolyglycosides or esters of fatty acids and sugars, in particular sucrose monopalmitate; long chain tertiary phosphine oxides; dialkylsulfoxides; polyoxyethylene and polyoxypropylene block copolymers; polyalkoxylated sorbitan esters; sorbitan fatty esters, poly (ethylene oxide) and fatty acid amides modified so as to give them a character hydrophobic (for example, mono- and diethanolamides of fatty acids containing from 10 to 18 carbon atoms).
Comme composé (b) utilisable dans les compositions selon la présente invention, on peut également citer : - les alkylphenols polyoxyalkylénés (polyoxyéthylénés, polyoxypropylénés, polyoxybutylénés) dont le substituant alkyle est en C6-C12 et contenant de 5 à 25 motifs oxyalkylènes ; à titre d'exemple, on peut citer les TRITON X-45, X-114, X- 100 ou X-102 commercialisés par Rohm & Haas Cy. ;As compound (b) which can be used in the compositions according to the present invention, mention may also be made of: - polyoxyalkylenated (polyoxyethylenated, polyoxypropylenated, polyoxybutylenated) alkylphenols in which the alkyl substituent is C 6 -C 12 and containing from 5 to 25 oxyalkylene units; by way of example, mention may be made of the Triton X-45, X-114, X-100 or X-102 sold by Rohm & Haas Cy. ;
- les glucosamides, glucamides, glycérolamides ; - les alcools aliphatiques en C8-C22 polyoxyalkylénés contenant de 1 à 25 motifs oxyalkylènes (oxyéthylène, oxypropylène). A titre d'exemple, on peut citer les TERGITOL 15-S-9, TERGITOL 24-L-6 NMW commercialisés par Union Carbide Corp., NEODOL 45-9, NEODOL 23-65, NEODOL 45-7, NEODOL 45-4 commercialisés par Shell Chemical Cy., les RHODASURF IDO60, RHODASURF LA90, RHODASURF IT070 commercialisés par la société RHODIA.- glucosamides, glucamides, glycerolamides; - polyoxyalkylenated C8-C22 aliphatic alcohols containing from 1 to 25 oxyalkylene units (oxyethylene, oxypropylene). By way of example, mention may be made of TERGITOL 15-S-9, TERGITOL 24-L-6 NMW sold by Union Carbide Corp., NEODOL 45-9, NEODOL 23-65, NEODOL 45-7, NEODOL 45-4 marketed by Shell Chemical Cy., RHODASURF IDO60, RHODASURF LA90, RHODASURF IT070 marketed by the company RHODIA.
- les oxydes d'aminés tels que les oxydes d'alkyl C10- 8 diméthylamines, les oxydes d'alkoxy C8-C22 éthyl dihydroxy éthylamines ;- amine oxides such as C10-8 dimethylamine alkyl oxides, C8-C22 alkoxy ethyl dihydroxy ethylamine oxides;
- les alkylpolyglycosides, plus particulièrement ceux décrits dans US-A-4 565 647;- alkylpolyglycosides, more particularly those described in US-A-4,565,647;
- les amides d'acides gras en C8-C20 ; - les acides gras éthoxylés ;- C8-C20 fatty acid amides; - ethoxylated fatty acids;
- les aminés éthoxylées.- ethoxylated amines.
Les compositions selon l'invention se présentent sous forme d'une solution aqueuse monophasique de tous ses constituants, ce qui est une propriété recherchée et difficile à obtenir pour les compositions de ce type. Sans vouloir limiter l'invention à une théorie scientifique particulière, la Demanderesse est de l'opinion que le composé (b) et le composé (a) s'associent en aggrégats ou micelles dont la taille est de l'ordre de quelques dizaines de nanomètres. Le cœur de l'aggrégat serait formé d'un coalescat de la partie anionique (d) avec le composé (b). Ces aggrégats présentent une taille suffisante pour rester piégés dans le réseau du polymère filmogene (c) après application de la solution et évaporation de l'eau. La structure particulaire de ce coalescat assure un relargage lent et approprié du biocide lors des rinçages. De préférence, les compositions selon la présente invention comportent : (a) 100 parties en poids d'eau,The compositions according to the invention are in the form of a monophasic aqueous solution of all of its constituents, which is a desirable property and difficult to obtain for compositions of this type. Without wishing to limit the invention to a particular scientific theory, the Applicant is of the opinion that the compound (b) and the compound (a) combine in aggregates or micelles whose size is of the order of a few tens of nanometers. The core of the aggregate would be formed of a coalescat of the anionic part (d) with the compound (b). These aggregates have a sufficient size to remain trapped in the film-forming polymer network (c) after application of the solution and evaporation of the water. The particulate structure of this coalescat ensures a slow and appropriate release of the biocide during rinsing. Preferably, the compositions according to the present invention comprise: (a) 100 parts by weight of water,
(b) 0,05 à 5 parties en poids d'un tensioactif cationique ayant un effet biocide,(b) 0.05 to 5 parts by weight of a cationic surfactant having a biocidal effect,
(c) 0,02 à 1 partie en poids d'un polymère filmogene formant un film transparent, (d) 0,05 à 5 parties en poids d'au moins un copolymère à blocs hydrosoluble comportant au moins un bloc hydrophile anionique et au moins un bloc hydrophile non ionique, et (e) éventuellement, 1 à 20 parties en poids d'un tensioactif non ionique. Les compositions encore plus préférées selon la présente invention comportent : (a) 100 parties en poids d'eau,(c) 0.02 to 1 part by weight of a film-forming polymer forming a transparent film, (d) 0.05 to 5 parts by weight of at least one water-soluble block copolymer comprising at least one anionic hydrophilic block and at at least one nonionic hydrophilic block, and (e) optionally, 1 to 20 parts by weight of a nonionic surfactant. The even more preferred compositions according to the present invention comprise: (a) 100 parts by weight of water,
(b) 0,5 à 2 parties en poids d'un tensioactif cationique ayant un effet biocide,(b) 0.5 to 2 parts by weight of a cationic surfactant having a biocidal effect,
(c) 0,05 à 0,3 partie en poids d'un polymère filmogene formant un film transparent,(c) 0.05 to 0.3 part by weight of a film-forming polymer forming a transparent film,
(d) 0,5 à 2 parties en poids d'au moins un copolymère à blocs hydrosoluble comportant au moins un bloc hydrophile anionique et au moins un bloc hydrophile non ionique, et(d) 0.5 to 2 parts by weight of at least one water-soluble block copolymer comprising at least one anionic hydrophilic block and at least one nonionic hydrophilic block, and
(e) éventuellement, 3 à 8 parties en poids d'un tensioactif non ionique.(e) optionally, 3 to 8 parts by weight of a nonionic surfactant.
Le choix de la nature du ou des tensioactif(s) biocide(s) mis en œuvre est fonction de l'application recherchée (hygiène corporelle, désinfection de surfaces dures diverses).The choice of the nature of the biocidal surfactant (s) used depends on the desired application (personal hygiene, disinfection of various hard surfaces).
La quantité d'agent biocide (b) à mettre en œuvre est fonction du domaine d'application pour lequel le procédé de l'invention est mis en œuvre.The quantity of biocidal agent (b) to be used depends on the field of application for which the method of the invention is implemented.
Ainsi dans le domaine de l'hygiène corporelle pour les cheveux ou la peau, la quantité de biocide (b) mise en œuvre est généralement de l'ordre de 0,05 à 0,3% pour répondre aux législations en vigueur.Thus in the field of personal hygiene for the hair or the skin, the amount of biocide (b) used is generally of the order of 0.05 to 0.3% to comply with the legislation in force.
La composition biocide mise en œuvre pour réaliser le procédé de l'invention, peut être de différent type, ce en fonction du domaine d'application pour lequel le procédé de l'invention est mis en œuvre.The biocidal composition used to carry out the process of the invention may be of different type, depending on the field of application for which the process of the invention is implemented.
Il peut s'agir d'une composition d'hygiène corporelle pour les cheveux ou la peau, notamment sous la forme de shampoings, de lotions, de gels douche, pour les cheveux ou le corps, de savons liquides pour le visage ou le corps.It may be a body hygiene composition for the hair or the skin, in particular in the form of shampoos, lotions, shower gels, for the hair or the body, liquid soaps for the face or the body. .
Il peut aussi s'agir de compositions détergentes pour le nettoyage et la désinfection des surfaces dures industrielles, domestiques ou de collectivités. Selon l'invention, à côté des constituants principaux de la composition biocide aqueuse, peuvent être présents d'autres constituants, dont la nature est fonction du domaine d'application pour lequel le procédé de l'invention est mis en œuvre. Ainsi des compositions biocides pour le traitement des surfaces dures peuvent en outre comprendre des additifs comme des agents chélatants tels que les aminocarboxylates (éthylènediaminetétraacétates, nitrilotriacétates, N,N- bis(carboxyméthyl)glutamates, citrates), des alcools (éthanol, isopropanol, glycols), des adjuvants de détergence (phosphates, silicates), des agents tensioactifs, des colorants, des parfums ou autres.It can also be detergent compositions for cleaning and disinfecting hard industrial, domestic or community surfaces. According to the invention, in addition to the main constituents of the aqueous biocidal composition, other constituents may be present, the nature of which depends on the field of application for which the process of the invention is implemented. Thus, biocidal compositions for the treatment of hard surfaces can also comprise additives such as chelating agents such as aminocarboxylates (ethylenediaminetetraacetates, nitrilotriacetates, N, N-bis (carboxymethyl) glutamates, citrates), alcohols (ethanol, isopropanol, glycols ), detergency builders (phosphates, silicates), surfactants, colorants, perfumes or the like.
Des compositions pour l'hygiène des cheveux et de la peau peuvent en outre contenir des agents tensioactifs, des agents humectants, des émollients, des agents viscosants ou gélifiants, des agents séquestrants, des agents conditionneurs, des colorants, des parfums ou autres. Ledit procédé de traitement biocide des surfaces faisant l'objet de l'invention, peut être mis en œuvre pour réaliser le traitement de surfaces corporelles kératiniques ou cutanées, de surfaces dures diverses, comme les carrelages, planchers, murs, surfaces de travail, équipement, mobilier, instruments, ... dans l'industrie, le domaine agro-alimentaire, les domaines domestiques (cuisines, salles de bain, sanitaires ...) et en collectivités.Hair and skin hygiene compositions may also contain surfactants, humectants, emollients, viscosifiers or gelling agents, sequestering agents, conditioning agents, colorants, perfumes or the like. Said biocidal treatment process for the surfaces which are the subject of the invention can be used to carry out the treatment of keratinous or cutaneous body surfaces, of various hard surfaces, such as tiles, floors, walls, work surfaces, equipment. , furniture, instruments, ... in industry, the food industry, domestic areas (kitchens, bathrooms, sanitary ...) and communities.
Parmi les surfaces dures pouvant être traitées, on peut citer notamment celles en céramique, porcelaine, verre, polychlorure de vinyle, formica ou autre polymère organique dur, acier inoxydable, aluminium, bois ...Among the hard surfaces which can be treated, mention may in particular be made of ceramic, porcelain, glass, polyvinyl chloride, formica or other hard organic polymer, stainless steel, aluminum, wood, etc.
L'opération de désinfection consiste à appliquer ou mettre en contact ladite composition biocide aqueuse, éventuellement diluée de 1 à 1000 fois, de préférence de 1 à 100 fois, sur ou avec la surface à traiter, puis à laisser l'eau s'évaporer.The disinfection operation consists in applying or bringing into contact said aqueous biocidal composition, optionally diluted from 1 to 1000 times, preferably from 1 to 100 times, on or with the surface to be treated, then allowing the water to evaporate. .
Parmi les microorganismes dont la prolifération peut être contrôlée par mise en œuvre du procédé de l'invention, on peut mentionner . les bactéries Gram négatives comme : Pseudomonas aeruginosa ; Escherichia coli ; Proteus mirabilisAmong the microorganisms whose proliferation can be controlled by implementing the method of the invention, mention may be made. Gram negative bacteria such as: Pseudomonas aeruginosa; Escherichia coli; Proteus mirabilis
. les bactéries Gram positives comme : Staphylococcus aureus ; Streptococcus faecium . d'autres bactéries dangereuses dans l'alimentation comme : Salmonella tvphimurium ; Listeria monocvtoαenes ; Campylobacter jejuni ; Yersinia enterocolitica. Gram positive bacteria such as: Staphylococcus aureus; Streptococcus faecium . other dangerous bacteria in the diet such as: Salmonella tvphimurium; Listeria monocvtoαenes; Campylobacter jejuni; Yersinia enterocolitica
. les levures comme : Saccharomyces cerevisiae ; Candida albicans . les champignons comme : Aspergillus niger ; Fusarium solani ; Pencillium chrvsoqenum. yeasts such as: Saccharomyces cerevisiae; Candida albicans. fungi such as: Aspergillus niger; Fusarium solani; Pencillium chrvsoqenum
. les algues comme : Chlorella saccharophilia ; Chlorella emersonii ; Chlorella vulαaris ; Chlamydomonas eugametos. algae such as: Chlorella saccharophilia; Chlorella emersonii; Chlorella vulαaris; Chlamydomonas eugametos
Les exemples suivants illustrent l'invention sans en limiter la portée.The following examples illustrate the invention without limiting its scope.
Exemple 1 :Example 1:
Synthèse d'un copolymère dibloc polvacrylate d'éthyle-b-polvacétate de vinyle (PAEt-b-PVAc.:Synthesis of a diblock copolymer ethyl polvacrylate-vinyl b-polyacetate (PAEt-b-PVAc .:
Dans un réacteur à double enveloppe de 4 L muni d'une pâle d'agitation sont introduits à 30°C : 1411 g d'eau, 0,88 g de carbonate de sodium et 23,98 g de sodium dodécyl sulphate. Sous agitation, le réacteur est purgé par un courant d'azote et chauffé jusqu'à atteindre 85°C. Lors de la montée en température, à 80°C, sont introduits 1 ,63 g d'acide méthacrylique, 31 ,71 g d'acrylate d'éthyle et 17,5 g de S-propionyl O-éthyl xanthate. A 85°C est introduite une solution de 1 ,34 g de persulfate d'ammonium dans 2,67 g d'eau. Ensuite, un mélange de 285,48 g d'acrylate d'éthyle et 15,03 g d'acide méthacrylique est additionné en continu pendant une heure. Le système est maintenu à 85°C pendant 45 minutes supplémentaires, temps au bout duquel un échantillon est prélevé pour analyse GPC (chromatographie en phase vapeur et Mn : masse moléculaire en nombre, Mw ; masse moléculaire en poids) : Mn=4380 g / mol Mw/Mn=1 ,7 En maintenant le réacteur à 85°C, la synthèse du copolymère dibloc est réalisée en additionnant 1088 g d'acétate de vinyle pendant 2h15 minutes, de même qu'un mélange de 60 g d'eau, 1 ,26 g de carbonate de sodium et 0,35 g de persulfate d'ammonium pendant la même période. En fin d'introduction, 0,8 g de persulfate d'ammonium sont rajoutés et le réacteur est maintenu à 85°C pendant deux heures supplémentaires. Le réacteur est ensuite refroidi. Un échantillon est prélevé pour analyse :1411 g of water, 0.88 g of sodium carbonate and 23.98 g of sodium dodecyl sulphate are introduced into a 4 L double-jacketed reactor fitted with a stirring paddle. With stirring, the reactor is purged with a stream of nitrogen and heated to 85 ° C. When the temperature rises to 80 ° C., 1.63 g of methacrylic acid, 31.71 g of ethyl acrylate and 17.5 g of S-propionyl O-ethyl xanthate are introduced. At 85 ° C., a solution of 1.34 g of ammonium persulfate in 2.67 g of water is introduced. Then, a mixture of 285.48 g of ethyl acrylate and 15.03 g of methacrylic acid is added continuously for one hour. The system is maintained at 85 ° C. for an additional 45 minutes, time after which a sample is taken for GPC analysis (chromatography in vapor phase and M n : molecular mass in number, M w ; molecular mass in weight): M n = 4380 g / mol M w / M n = 1.7 Keeping the reactor at 85 ° C, the synthesis of the diblock copolymer is carried out by adding 1088 g of vinyl acetate for 2h15 minutes, as well as a mixture of 60 g of water, 1.26 g of sodium carbonate and 0.35 g of ammonium persulfate during the same period. At the end of the introduction, 0.8 g of ammonium persulfate are added and the reactor is maintained at 85 ° C for two additional hours. The reactor is then cooled. A sample is taken for analysis:
Mn=20200 g / mol Mw/Mn=1 ,58M n = 20,200 g / mol M w / M n = 1.58
La présence du groupement xanthate en bout de chaîne est confirmée GPC (détection UV à 290 nm).The presence of the xanthate group at the end of the chain is confirmed by GPC (UV detection at 290 nm).
Exemple 2 :Example 2:
Synthèse d'un copolymère dibloc polv(acide acrylique)-b-poly(alcool vinylique. (PAA-b-PAV) par hydrolyse basique du copolymère PAEt-b-PVAc décrit dans l'exemple 1 :Synthesis of a diblock copolymer polv (acrylic acid) -b-poly (vinyl alcohol. (PAA-b-PAV) by basic hydrolysis of the copolymer PAEt-b-PVAc described in Example 1:
L'hydrolyse du copolymère PAEt-b-PVAc décrit dans l'exemple 1 est effectuée dans le réacteur de synthèse du polymère dibloc utilisé dans l'exemple 1 , sur un équivalent de 400 g de matière sèche (soit 1045 g de latex à 38,25 % d'extrait sec). Le pH du latex est ajusté à 8 avec une solution de soude 1 N. Le réacteur est chauffé à 60°C et maintenu sous courant d'azote. Sous une forte agitation, 1115 g de soude 4N sont additionnés pendant 1 heure. Le système est maintenu à cette température pendant 11 heures. L'extrait sec final est de 16,25%. Un échantillon prélevé en fin de réaction est analysé par RMN1H. L'analyse confirme la disparition des pics caractéristiques des esters acryliques et du groupement acétate.The hydrolysis of the PAEt-b-PVAc copolymer described in Example 1 is carried out in the synthesis reactor of the diblock polymer used in Example 1, on an equivalent of 400 g of dry matter (i.e. 1045 g of latex at 38 , 25% dry extract). The pH of the latex is adjusted to 8 with a 1N sodium hydroxide solution. The reactor is heated to 60 ° C. and maintained under a stream of nitrogen. With vigorous stirring, 1115 g of 4N sodium hydroxide are added for 1 hour. The system is kept at this temperature for 11 hours. The final dry extract is 16.25%. A sample taken at the end of the reaction is analyzed by 1 H NMR. The analysis confirms the disappearance of the peaks characteristic of the acrylic esters and of the acetate group.
Exemple 3 :Example 3:
On utilise le copolymère di-bloc polyacrylate de sodium/alcool polyvinylique synthétisé selon l'exemple 2.The di-block sodium polyacrylate / polyvinyl alcohol copolymer synthesized according to Example 2 is used.
Les blocs alcool polyvinylique et polyacrylate de sodium contiennent respectivement 184 monomères alcool polyvinylique et 44 monomères acrylate de sodium. Le copolymère est ensuite purifié de la manière suivante : une solution du copolymère à 5% en poids dans l'eau est précipitée goutte à goutte dans un large excès d'acétone, puis redissoute dans l'eau. On effectue deux fois ce cycle pour obtenir une solution jaune pâle très transparente. Le pH est ensuite ajusté à 10 par ajout d'hydroxyde de sodium. La masse moléculaire en nombre de ce polymère est de 20200.The polyvinyl alcohol and sodium polyacrylate blocks respectively contain 184 polyvinyl alcohol monomers and 44 sodium acrylate monomers. The copolymer is then purified in the following manner: a 5% by weight solution of the copolymer in water is precipitated dropwise in a large excess of acetone, then redissolved in water. We do it twice this cycle to obtain a very transparent pale yellow solution. The pH is then adjusted to 10 by adding sodium hydroxide. The number-average molecular mass of this polymer is 20,200.
Le biocide utilisé est le chlorure de benzyl dodécyl diméthyl ammonium. L'isotherme de fixation du chlorure de benzyle dodécyl diméthyl ammonium sur le copolymère di-bloc polyacrylate de sodium/alcool polyvinylique a été déterminée par potentiométrie à l'aide d'une électrode spécifique à ce tensioactif cationique. Les résultats obtenus sont rassemblés dans le tableau 1 ci-après. L'électrode est la suivante : Ag/AgCI | pont d'agar 3M NH4CI ; la solution de référence est une solution de biocide à 3x10"4Mol et la membrane est une membrane de PVC. La préparation et le montage de l'électrode sont décrits par ailleurs (Shirahama and Tashiro, Bull. Chem. Soc. Jpn. 1984, 57, 377; Benrraou et al, J. Phys. Chem., 1992, 96, 1468). La force électromotrice (fem) a été mesurée à l'aide d'un multimètre VWR SCIENTIFIC, modèle 8015. Cette électrode a une réponse nernstienne sur tout le domaine de concentration étudié. Deux solutions de chlorure de benzyl dodécyl diméthyl ammonium concentrées à 0,1 et 1 % en poids ont été ajoutées progressivement à 30ml de copolymère concentré à 0,10% en poids. La variation de concentration en di-bloc consécutive à l'ajout de tensioactif a été prise en compte. On détermine la fraction de sites de fixation occupés (β) comme suit : β = (c„ -c,)/c. où Ctot est la concentration totale de tensioactif ajouté, C, la concentration en tensioactif libre, non fixé au polymère, et Cs la concentration en sites de fixation sur le polymère, c'est-à-dire la concentration en charges. On détermine C, à l'aide d'une courbe de calibration préalablement établie en absence de copolymère. Comme indiqué dans le tableau 1 , on observe l'apparition d'une légère turbidité pour des valeurs de β voisines de 1 , c'est-à-dire lorsque les charges des tensioactifs fixés compensent les charges présentes sur le bloc acide acrylique du copolymère di-bloc.The biocide used is benzyl dodecyl dimethyl ammonium chloride. The isotherm of fixation of benzyl dodecyl dimethyl ammonium chloride on the di-block copolymer sodium polyacrylate / polyvinyl alcohol was determined by potentiometry using an electrode specific to this cationic surfactant. The results obtained are collated in Table 1 below. The electrode is as follows: Ag / AgCI | 3M NH4CI agar bridge; the reference solution is a 3x10 "4 Mol biocide solution and the membrane is a PVC membrane. The preparation and assembly of the electrode are described elsewhere (Shirahama and Tashiro, Bull. Chem. Soc. Jpn. 1984 , 57, 377; Benrraou et al, J. Phys. Chem., 1992, 96, 1468) The electromotive force (fem) was measured using a VWR SCIENTIFIC multimeter, model 8015. This electrode has a Nernstian response over the entire concentration range studied Two solutions of benzyl dodecyl dimethyl ammonium chloride concentrated at 0.1 and 1% by weight were gradually added to 30 ml of concentrated copolymer at 0.10% by weight. in di-block following the addition of surfactant has been taken into account. The fraction of occupied binding sites (β) is determined as follows: β = (c „-c,) / c. where C tot is the concentration total of added surfactant, C, the concentration of free surfactant, not attached to the polym re, and the C s binding sites on the polymer concentration, that is to say the charge concentration. C is determined using a calibration curve previously established in the absence of copolymer. As indicated in table 1, the appearance of a slight turbidity is observed for values of β close to 1, that is to say when the charges of the fixed surfactants compensate for the charges present on the acrylic acid block of the copolymer di-block.
Exemple comparatif :Comparative example:
A titre de comparaison, on répète exactement le mode opératoire de l'exemple 3 sauf que l'on remplace le copolymère di-bloc par un homopolymère d'acide acrylique comportant 111 motifs acide acrylique par chaîne de polymère. Le pH a également été réglé à 10 avec de l'hydroxyde de sodium (tableau 1). La concentration en polymère a été réglée de manière à ce que la concentration en motifs acrylate de sodium soit égale à celle utilisée dans l'expérience réalisée avec le di-bloc, c'est-à-dire 0,03% en poids.For comparison, the procedure of Example 3 is repeated exactly except that the di-block copolymer is replaced by an acid homopolymer acrylic comprising 111 acrylic acid units per polymer chain. The pH was also adjusted to 10 with sodium hydroxide (Table 1). The polymer concentration was adjusted so that the concentration of sodium acrylate units was equal to that used in the experiment carried out with the di-block, that is to say 0.03% by weight.
On constate que la concentration d'aggrégation critique (cac), c'est-à-dire la concentration minimale au-delà de laquelle on observe la fixation du tensioactif sur le polymère, du chlorure de benzyl dodécyl diméthyl ammonium est sensiblement la même que pour le copolymère di-bloc : environ 9x10"4 % en poids. En revanche la solution devient légèrement trouble pour une valeur de β voisine de 0,1 et l'on observe une précipitation macroscopique pour une valeur de β proche de 0,8, ces deux phénomènes n'apparaissant pas avec le di-bloc.It is found that the concentration of critical aggregation (cac), that is to say the minimum concentration above which the fixation of the surfactant on the polymer, of benzyl dodecyl dimethyl ammonium chloride is observed is substantially the same as for the di-block copolymer: approximately 9 × 10 -4 % by weight. On the other hand, the solution becomes slightly cloudy for a value of β close to 0.1 and macroscopic precipitation is observed for a value of β close to 0.8 , these two phenomena do not appear with the di-block.
Tableau 1 Isotherme de fixation du chlorure de benzyl dodécyl diméthyl ammonium sur le copolymère di-bloc polyacrylate de sodium/alcool polyvinylique (copolymère dibloc) et sur un homopolymère d'acrylate de sodium (PAA). Table 1 Isotherm for fixing benzyl dodecyl dimethyl ammonium chloride on the sodium polyacrylate / polyvinyl alcohol di-block copolymer (diblock copolymer) and on a sodium acrylate homopolymer (PAA).
(1) limite de turbidité(1) turbidity limit
(2) limite de précipitation macroscopique(2) macroscopic precipitation limit
Exemple 4Example 4
On utilise de nouveau le copolymère di-bloc et le tensioactif cationique biocide décrits dans l'exemple 3 dans une formulation plus concentrée. On prépare une solution de 1 ,5% en poids de tensioactif cationique et de 1% en poids de copolymère di-bloc. On observe l'apparition d'un précipité blanc formé du complexe copolymère - tensioactif. Ce complexe est totalement redissous par l'ajout d'une concentration totale de 5% en poids de tensioactif non ionique (RHODASURF DA639, un isododécyl éther hexaoxyéthylene glycol vendu par la société Rhodia). Cette redissolution montre la co-micellisation des tensioactifs cationiques et neutres sur le polymère. Le tensioactif non ionique apporte en se fixant au complexe un caractère hydrophile suffisant pour éviter la séparation de phases.The di-block copolymer and the biocidal cationic surfactant described in Example 3 are again used in a more concentrated formulation. A solution of 1.5% by weight of cationic surfactant and 1% by weight of di-block copolymer is prepared. We observe the appearance of a white precipitate formed of copolymer - surfactant complex. This complex is completely redissolved by the addition of a total concentration of 5% by weight of nonionic surfactant (RHODASURF DA639, an isododecyl ether hexaoxyethylene glycol sold by the company Rhodia). This redissolution shows the co-micellization of the cationic and neutral surfactants on the polymer. By attaching to the complex, the nonionic surfactant provides sufficient hydrophilicity to avoid phase separation.
On ajoute ensuite une solution aqueuse de guar anionique (carboxyméthyl guar, CMG, de masse moléculaire 2,3 millions et de degré de substitution anionique de 0,10). La concentration finale en carboxyméthyl guar est de 0,15%. L'ajout de ce polymère n'induit pas de séparation de phase dans la solution. On obtient ainsi une solution détergente monophasique.An aqueous anionic guar solution is then added (carboxymethyl guar, CMG, of molecular mass 2.3 million and degree of anionic substitution of 0.10). The final concentration of carboxymethyl guar is 0.15%. The addition of this polymer does not induce phase separation in the solution. A single-phase detergent solution is thus obtained.
Exemple 5Example 5
Les tensioactifs cationiques et non ioniques, ainsi que le copolymère à blocs et la guar anionique sont identiques à ceux de l'exemple 4.The cationic and nonionic surfactants, as well as the block copolymer and the anionic guar are identical to those of Example 4.
On découpe un carrelage de salle de bain en carrés de 5x5cm. Nous n'utiliserons dans cette étude que le côté lisse et imperméable du carrelage. On dépose sur les bords de chaque carré posé à plat, face lisse vers le haut, un enduit silicone qui polymérise au contact de l'air. Après 24 heures, cet enduit forme un caoutchouc très résistant qui permet d'éviter l'écoulement d'un liquide contenant entre autres (voir description ci-dessous) du chlorure de benzyl dodécyl diméthyl ammonium sur la surface du côté lisse du carrelage. On y dépose ensuite 3ml d'une formule liquide donnée. Le carrelage et le liquide déposé à sa surface sont enfin placés durant 24 heures dans une hotte soufflante à flux laminaire, jusqu'à séchage complet et formation d'un film uniforme à la surface. Ce carrelage est ensuite suspendu verticalement au-dessus d'un Bêcher contenant 150 ml d'une solution aqueuse de chlorure de sodium concentré à 0,5M.We cut a bathroom tile into 5x5cm squares. In this study, we will only use the smooth, waterproof side of the tiling. A silicone coating which polymerizes on contact with air is deposited on the edges of each square laid flat, smooth side up. After 24 hours, this coating forms a very resistant rubber which prevents the flow of a liquid containing inter alia (see description below) benzyl dodecyl dimethyl ammonium chloride on the surface of the smooth side of the tiling. Then 3ml of a given liquid formula is deposited there. The tiles and the liquid deposited on their surface are finally placed for 24 hours in a laminar flow fan hood, until complete drying and formation of a uniform film on the surface. This tile is then suspended vertically above a beaker containing 150 ml of an aqueous solution of concentrated sodium chloride at 0.5M.
La surface couverte du film séché est ensuite aspergée d'eau à l'aide d'un vaporisateur. Chaque aspersion projette 1 ml d'eau sur la surface. Le liquide tombant de la surface est récupéré dans le Bêcher, et l'on prélève 2,5ml dans le Bêcher après chaque aspersion.The covered surface of the dried film is then sprayed with water using a spray bottle. Each spray projects 1 ml of water onto the surface. The liquid falling from the surface is collected in the beaker, and 2.5 ml is taken from the beaker after each spraying.
On détermine la concentration en chlorure de benzyl dodécyl diméthyl ammonium en mesurant l'absorbance UV de la solution prélevée à 262, 5nm et en se référant à une courbe de calibration réalisée auparavant. Nous avons utilisé pour cette mesure un spectromètre Hitachi modèle U3410.The benzyl dodecyl dimethyl ammonium chloride concentration is determined by measuring the UV absorbance of the solution sampled at 262.5 nm and by referring to a calibration curve carried out previously. We used for this measurement a Hitachi model U3410 spectrometer.
Cette concentration nous permet de calculer la quantité de chlorure de benzyl dodécyl diméthyl ammonium resté sur le carrelage malgré le rinçage. Nous avons pris en compte la variation de volume de liquide dans le Bêcher due à l'ajout d'eau vaporisée sur le carrelage et au prélèvement nécessaire pour effectuer la mesure. Les résultats sont rassemblés dans le tableau 2 ci-après donnant le pourcentage de chlorure de benzyl dodécyl diméthyl ammonium resté sur la surface du carrelage en fonction du nombre de rinçages.This concentration allows us to calculate the amount of benzyl dodecyl dimethyl ammonium chloride remaining on the tiles despite rinsing. We have taken into account the variation in the volume of liquid in the beaker due to the addition of water spray on the tiling and the sample required to perform the measurement. The results are collated in Table 2 below giving the percentage of benzyl dodecyl dimethyl ammonium chloride remaining on the surface of the tiling as a function of the number of rinses.
Tableau 2Table 2
Pourcentage de chlorure de benzyl dodécyl diméthyl ammonium resté sur le carrelage en fonction du nombre de rinçages.Percentage of benzyl dodecyl dimethyl ammonium chloride remaining on the tiles depending on the number of rinses.
Formule A : 1 ,5 % en poids de chlorure de benzyl dodécyl diméthyl ammonium Formule B : 1 ,5 % en poids de chlorure de benzyl dodécyl diméthyl ammoniumFormula A: 1.5% by weight of benzyl dodecyl dimethyl ammonium chloride Formula B: 1.5% by weight of benzyl dodecyl dimethyl ammonium chloride
5 % en poids d'isododécyl éther hexaoxyéthylene glycol5% by weight of isododecyl ether hexaoxyethylene glycol
0,15 % en poids de guar anionique0.15% by weight of anionic guar
Formule C : 1 ,5 % en poids de chlorure de benzyl dodécyl diméthyl ammoniumFormula C: 1.5% by weight of benzyl dodecyl dimethyl ammonium chloride
5 % en poids d'isododécyl éther hexaoxyéthylene glycol 0,15 % en poids de guar anionique 1% en poids de copolymère dibloc (copolymère à blocs alcool vinylique et acrylate de sodium décrit dans l'exemple 3)5% by weight of isododecyl ether hexaoxyethylene glycol 0.15% by weight of anionic guar 1% by weight of diblock copolymer (copolymer with vinyl alcohol and sodium acrylate blocks described in Example 3)
Exemple 6 :Example 6:
On utilise de nouveau le copolymère di-bloc décrit dans l'exemple 3 ci-dessus et comme agent cationique à effet biocide, on ajoute du GLOKILL PQ, qui est un polymère biocide d'aminé quaternaire positivement chargé à tous les pH, produit commercialisé par la société RHODIA. La structure des motifs récurrents de ce biocide polymère est la suivante :The di-block copolymer described in Example 3 above is again used and as a cationic agent with a biocidal effect, GLOKILL PQ is added, which is a biocidal polymer of quaternary amine positively charged at all pH, product marketed by RHODIA. The structure of the recurring units of this polymer biocide is as follows:
n est un nombre entier dont la valeur confère au polymère une masse moléculaire en poids comprise entre 5 000 et 11 000. n is an integer whose value gives the polymer a molecular weight by weight of between 5,000 and 11,000.
Pour confirmer la formation d'agglomérats entre GLOKILL PQ et le copolymère di-bloc, une série d'échantillons dans lesquels la concentration de GLOKILL PQ est fixée et celle du copolymère varie sont préparées de la manière suivante: Tout d'abord on définit un paramètre z comme le rapport entre les charges positives de GLOKILL et les charges négatives de la partie anionique du copolymère. Une solution de GLOKILL PQ à 5,2 g/l a été mélangée avec la solution de copolymère de façon à obtenir un rapport de charge variant entre z=0 et z=2,5 et une concentration finale de 1 ,56g/L en GLOKILL PQ. La technique de diffusion de la lumière (dynamique) a été utilisée pour mesurer la taille en nanomètre (nm) des agglomérats formés par ces deux polymères. Les résultats présentés dans le tableau 3 ci-après donnent la taille des objets en fonction de z. Tableau 3 :To confirm the formation of agglomerates between GLOKILL PQ and the di-block copolymer, a series of samples in which the concentration of GLOKILL PQ is fixed and that of the copolymer varies are prepared as follows: First, a parameter z as the ratio between the positive charges of GLOKILL and the negative charges of the anionic part of the copolymer. A solution of GLOKILL PQ at 5.2 g / l was mixed with the copolymer solution so as to obtain a charge ratio varying between z = 0 and z = 2.5 and a final concentration of 1.56 g / L in GLOKILL PQ. The light scattering technique (dynamic) was used to measure the size in nanometers (nm) of the agglomerates formed by these two polymers. The results presented in table 3 below give the size of the objects as a function of z. Table 3:
Exemple 7:Example 7:
On utilise à nouveau le copolymère di-bloc décrit dans l'exemple 3 et comme agent cationique à effet biocide , on ajoute du GLOKILL utilisé dans l'exemple 6 ci-dessus. La composition comporte également le tensioactif neutre et est préparée de la manière suivante:The di-block copolymer described in Example 3 is again used and as a cationic agent with a biocidal effect, GLOKILL used in Example 6 above is added. The composition also contains the neutral surfactant and is prepared in the following manner:
A la solution de copolymère di-bloc, on ajoute le tensioactif non ionique décrit dans l'exemple 4 (RHODASURF DA639, un isododecyl éther hexaoxyéthylèneglycol ) et du GLOKILL afin d'obtenir une solution de 0,6% en poids en di-bloc, de 0,156 % en poids en GLOKILL et de 5% en tensioactif non ionique.To the solution of di-block copolymer, the nonionic surfactant described in Example 4 (RHODASURF DA639, an isododecyl ether hexaoxyethylene glycol) and GLOKILL are added in order to obtain a solution of 0.6% by weight in di-block , 0.156% by weight in GLOKILL and 5% in nonionic surfactant.
On obtient ainsi une solution détergente monophasique. A single-phase detergent solution is thus obtained.

Claims

REVENDICATIONS
1. Composition pour le traitement biocide à effet rémanent de surfaces, ladite composition comportant, (a) de l'eau, (b) un tensioactif cationique ayant un effet biocide, (c) un polymère filmogene formant un film transparent, (d) au moins un copolymère à blocs hydrosoluble comportant au moins un bloc hydrophile anionique et au moins un bloc hydrophile non ionique.1. Composition for the biocidal treatment with residual effect of surfaces, said composition comprising, (a) water, (b) a cationic surfactant having a biocidal effect, (c) a film-forming polymer forming a transparent film, (d) at least one copolymer with water-soluble blocks comprising at least one hydrophilic anionic block and at least one hydrophilic nonionic block.
2. Composition selon la revendication 1 , caractérisée en ce que la composition comporte en outre (e) un tensioactif non ionique.2. Composition according to claim 1, characterized in that the composition also comprises (e) a nonionic surfactant.
3. Composition selon la revendication 1 , caractérisée en ce que le tensioactif cationique (b) ayant un effet biocide est choisi parmi :3. Composition according to claim 1, characterized in that the cationic surfactant (b) having a biocidal effect is chosen from:
- les sels de monoammonium quaternaires de formules R1 R2 R3 R4 N+ X"- the quaternary monoammonium salts of formulas R 1 R 2 R 3 R 4 N + X " where
R représente un groupe benzyle éventuellement substitué par un atome de chlore ou un groupe C1-C4 alkylbenzyle,R represents a benzyl group optionally substituted by a chlorine atom or a C1-C4 alkylbenzyl group,
R représente un groupe alkyle en C8-C24, o 4 R et R , semblables ou différents, représentent un groupe alkyle ou hydroxyalkyle en C1-C4, et X" est un anion solubilisant ;R represents a C8-C24 alkyl group, o 4 R and R, which are similar or different, represent a C1-C4 alkyl or hydroxyalkyl group, and X " is a solubilizing anion;
- les produits de formule :- formula products:
R R2' R3' R4' N+ X"RR 2 'R 3 ' R 4 'N + X " WHERE
V 9'V 9 '
R et R , semblables ou différents, représentent un groupe alkyle en C8-C24,R and R, similar or different, represent a C8-C24 alkyl group,
3' 4'3 '4'
R et R , semblables ou différents , représentent un groupe alkyle en C1-C4, et X" est un anion solubilisant ; ou - les produits de formule :R and R, similar or different, represent a C1-C4 alkyl group, and X " is a solubilizing anion; or - the products of formula:
Λ \ " " Λ " 4- R1 R R R N X" Λ \ "" Λ "4- R 1 RRRNX " where
1" R représente un groupe alkyle en C8-C24. 2" 3" 4" R , R et R , semblables ou différents, représentent un groupe alkyle en Ci-1 "R represents a C8-C24 alkyl group. 2 "3" 4 "R, R and R, the same or different, represent a C1-6 alkyl group
C4, etC4, and
X" est un anion solubilisant.X " is a solubilizing anion.
4. Composition selon la revendication 3, caractérisée en ce que X" est un anion halogénure, sulfate ou méthylsulfate.4. Composition according to claim 3, characterized in that X " is a halide, sulphate or methyl sulphate anion.
5. Composition selon l'une quelconque des revendications précédentes, caractérisée en ce que tout ou partie du composé (b) est remplacé par un polymère cationique à effet biocide.5. Composition according to any one of the preceding claims, characterized in that all or part of the compound (b) is replaced by a cationic polymer with a biocidal effect.
6. Composition selon la revendication 5, caractérisée en ce que ledit polymère cationique provient de la réaction: d'épichlorhydrine et de diméthylamine ou de diéthylamine, - de l'épichlorohydrine et d'imidazole, de 1 ,3-dichloro-2-propanol et de diméthylamine, de 1 ,3-dichloro-2-propanol et du 1 ,3-bis(diméthylamino)-2-propanol, du dichlorure d'éthylène et du 1 ,3-bis(diméthyl-amino)-2-propanol, ou de bis(2-chloroéthyl) éther et de N,N'-bis(diméthylaminopropyl)urée ou thiourée.6. Composition according to claim 5, characterized in that said cationic polymer comes from the reaction: of epichlorohydrin and dimethylamine or diethylamine, - of epichlorohydrin and imidazole, of 1,3-dichloro-2-propanol and dimethylamine, 1,3-dichloro-2-propanol and 1,3-bis (dimethylamino) -2-propanol, ethylene dichloride and 1,3-bis (dimethyl-amino) -2-propanol , or bis (2-chloroethyl) ether and N, N'-bis (dimethylaminopropyl) urea or thiourea.
7. Composition selon la revendication 2, caractérisée en ce que le tensioactif non ionique (e) est choisi parmi les condensats d'oxyde d'alkylène ayant de 1 à 4 atomes de carbone, avec des alcools, des polyols, des alkylphenols, des esters d'acides gras, des amides d'acides gras et des aminés grasses ; les amines- oxydes ; les dérivés de sucre; les oxydes de phosphine tertiaire à longue chaîne; les dialkylsulfoxydes; les copolymères séquences de polyoxyéthylène et de polyoxypropylene; les esters de sorbitan polyalkoxylés; les esters gras de sorbitan, les poly(oxyde d'éthylène) et amides d'acides gras modifiés de manière à leur conférer un caractère hydrophobe; les alkylphenols polyoxyalkylénés dont le substituant alkyle est en Cg-C^ et contenant de 5 à 25 motifs oxyalkylènes; les glucosamides, glucamides, glycérolamides; les alcools aliphatiques en Cs- C22 polyoxyalkylénés contenant de 1 à 25 motifs polyoxyalkylénés; les oxydes d'amines, les oxydes d'alkoxy C8-C22 éthyl dihydroxy éthylamines; les alkylpolyglycosides; les amides d'acides gras en C8-C20 ; les acides gras éthoxylés ou les aminés éthoxylées.7. Composition according to claim 2, characterized in that the nonionic surfactant (e) is chosen from alkylene oxide condensates having from 1 to 4 carbon atoms, with alcohols, polyols, alkylphenols, fatty acid esters, fatty acid amides and fatty amines; amine oxides; sugar derivatives; long chain tertiary phosphine oxides; dialkylsulfoxides; polyoxyethylene and polyoxypropylene block copolymers; polyalkoxylated sorbitan esters; sorbitan fatty esters, poly (ethylene oxide) and fatty acid amides modified so as to give them a hydrophobic character; polyoxyalkylenated alkylphenols in which the alkyl substituent is Cg-C ^ and containing from 5 to 25 oxyalkylene units; glucosamides, glucamides, glycerolamides; polyoxyalkylenated Cs-C22 aliphatic alcohols containing from 1 to 25 polyoxyalkylenated units; oxides amines, C8-C22 alkoxy oxides ethyl dihydroxy ethylamines; alkylpolyglycosides; amides of C8-C20 fatty acids; ethoxylated fatty acids or ethoxylated amines.
8. Composition selon l'une quelconque des revendications précédentes, caractérisée en ce que le composé (c) est une gomme guar anionique.8. Composition according to any one of the preceding claims, characterized in that the compound (c) is an anionic guar gum.
9. Composition selon l'une quelconque des revendications précédentes, caractérisée en ce que le composé (c) est une guar carboxyméthyle.9. Composition according to any one of the preceding claims, characterized in that the compound (c) is a carboxymethyl guar.
10. Composition selon l'une quelconque des revendications précédentes, caractérisée en ce que le copolymère (d) présente une masse moléculaire en nombre comprise entre 2000 et 20 000, de préférence entre 4000 et 10 000 g/mole.10. Composition according to any one of the preceding claims, characterized in that the copolymer (d) has a number molecular mass of between 2000 and 20,000, preferably between 4000 and 10,000 g / mole.
11. Composition selon la revendication 10, caractérisée en ce que le copolymère (d) est préparé par polymérisation vivante ou contrôlée.11. Composition according to claim 10, characterized in that the copolymer (d) is prepared by living or controlled polymerization.
12. Composition selon la revendication 1 , caractérisée en ce qu'elle comporte : (a) 100 parties en poids d'eau,12. Composition according to claim 1, characterized in that it comprises: (a) 100 parts by weight of water,
(b) 0,05 à 5 parties en poids d'un tensioactif cationique ayant un effet biocide,(b) 0.05 to 5 parts by weight of a cationic surfactant having a biocidal effect,
(c) 0,02 à 1 partie en poids d'un polymère filmogene formant un film transparent, et(c) 0.02 to 1 part by weight of a film-forming polymer forming a transparent film, and
(d) 0,05 à 5 parties en poids d'au moins un copolymère à blocs hydrosoluble comportant au moins un bloc hydrophile anionique et au moins un bloc hydrophile non ionique.(d) 0.05 to 5 parts by weight of at least one water-soluble block copolymer comprising at least one anionic hydrophilic block and at least one nonionic hydrophilic block.
13. Composition selon la revendication 2, caractérisée en ce qu'elle comporte : (a) 100 parties en poids d'eau, (b) 0,05 à 5 parties en poids d'un tensioactif cationique ayant un effet biocide, (c) 0,02 à 1 partie en poids d'un polymère filmogene formant un film transparent, (d) 0,05 à 5 parties en poids d'au moins un copolymère à blocs hydrosoluble comportant au moins un bloc hydrophile anionique et au moins un bloc hydrophile non ionique, et13. Composition according to claim 2, characterized in that it comprises: (a) 100 parts by weight of water, (b) 0.05 to 5 parts by weight of a cationic surfactant having a biocidal effect, (c ) 0.02 to 1 part by weight of a film-forming polymer forming a transparent film, (d) 0.05 to 5 parts by weight of at least one water-soluble block copolymer comprising at least one anionic hydrophilic block and at least one nonionic hydrophilic block, and
(e) 1 à 20 parties en poids d'un tensioactif non ionique.(e) 1 to 20 parts by weight of a nonionic surfactant.
14. Composition selon la revendication 13, caractérisée en ce qu'elle comporte :14. Composition according to claim 13, characterized in that it comprises:
(a) 100 parties en poids d'eau,(a) 100 parts by weight of water,
(b) 0,5 à 2 parties en poids d'un tensioactif cationique ayant un effet biocide,(b) 0.5 to 2 parts by weight of a cationic surfactant having a biocidal effect,
(c) 3 à 8 parties en poids d'un tensioactif non ionique, (d) 0,05 à 0,3 partie en poids d'un polymère filmogene formant un film transparent, et(c) 3 to 8 parts by weight of a nonionic surfactant, (d) 0.05 to 0.3 parts by weight of a film-forming polymer forming a transparent film, and
(e) 0,5 à 2 parties en poids d'au moins un copolymère à blocs hydrosoluble comportant au moins un bloc hydrophile anionique et au moins un bloc hydrophile non ionique.(e) 0.5 to 2 parts by weight of at least one water-soluble block copolymer comprising at least one anionic hydrophilic block and at least one nonionic hydrophilic block.
15. Composition selon l'une quelconque des revendications précédentes, caractérisée en ce que tout ou partie du composé (b) est remplacé par un polymère cationique à effet biocide.15. Composition according to any one of the preceding claims, characterized in that all or part of the compound (b) is replaced by a cationic polymer with a biocidal effect.
16. Procédé de traitement biocide des surfaces cutanées, kératiniques, ainsi que des surfaces dures industrielles, domestiques ou de collectivités, comprenant les étapes suivantes : a) on applique sur lesdites surfaces une composition biocide telle que définie selon l'une quelconque des revendications 1 à 15, b) on sèche la composition appliquée en vue d'éliminer l'eau, et c) on rince à l'eau au moins une fois lesdites surfaces.16. A method of biocidal treatment of cutaneous, keratinous surfaces, as well as industrial, domestic or community hard surfaces, comprising the following steps: a) a biocidal composition as defined according to any one of claims 1 is applied to said surfaces in 15, b) the applied composition is dried in order to remove the water, and c) the said surfaces are rinsed with water at least once.
17. Procédé selon la revendication 16, caractérisé en ce que ladite composition est diluée de 1 à 100 fois, de préférence de 1 à 1000 fois avant emploi.17. The method of claim 16, characterized in that said composition is diluted from 1 to 100 times, preferably from 1 to 1000 times before use.
18. Procédé selon la revendication 16 ou 17, caractérisé en ce que la quantité de composition biocide aqueuse mise en œuvre correspond à un dépôt d'agent biocide (b) de 0,01 à 10g, de préférence de 0,1 à 1g par m2 de surface et à un dépôt de copolymère (d) de 0,001 à 2g, de préférence de 0,01 à 0,5g par m2 de surface.18. The method of claim 16 or 17, characterized in that the amount of aqueous biocidal composition used corresponds to a deposition of biocidal agent (b) of 0.01 to 10 g, preferably from 0.1 to 1 g per m 2 of surface and at a deposition of copolymer (d) from 0.001 to 2 g, preferably from 0.01 to 0.5 g per m 2 of surface.
19. Procédé selon l'une quelconque des revendications 16 à 18, caractérisé en ce que ladite composition biocide est une composition d'hygiène corporelle pour les cheveux ou la peau, comme les shampoings, lotions, gels, pour les cheveux ou le corps et les savons liquides pour le visage ou le corps.19. Method according to any one of claims 16 to 18, characterized in that said biocidal composition is a body hygiene composition for the hair or the skin, such as shampoos, lotions, gels, for the hair or the body and liquid soaps for the face or body.
20. Procédé selon l'une quelconque des revendications 16 à 19, caractérisé en ce que le copolymère à blocs hydrosoluble (d) présente une masse moléculaire en nombre Mn comprise entre 2000 et 20 000, de préférence entre 3000 et 10 000 g/mole. 20. A method according to any one of claims 16 to 19, characterized in that the water-soluble block copolymer (d) has a molecular weight Mn of between 2000 and 20,000, preferably between 3000 and 10,000 g / mole .
EP01940669A 2000-06-08 2001-06-01 Composition and method for biocide treatment of surfaces Withdrawn EP1286589A2 (en)

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