Classifications

• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/37—Polymers
  • C11D3/3788—Graft polymers
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/0005—Other compounding ingredients characterised by their effect
  • C11D3/0036—Soil deposition preventing compositions; Antiredeposition agents

Definitions

• the present invention relates to new latexes used as anti-fouling and anti-deposition agents for the aqueous washing of textile articles.
• detergent compositions currently marketed for washing synthetic or natural textile articles are complex mixtures of different products all having well-defined functions, such as, for example, metal complexing agents, surfactants, anticorrosion agents, detergents, anti-depositing agents, bleaching agents or anti-fouling agents.
• Antifouling agents are understood to mean agents which essentially have the role of reducing the affinity of textile fibers for soiling, in particular for greasy soiling, and thus facilitating their removal.
• anti-depositing agents is intended to mean agents which essentially have the role of preventing the deposition of soiling on the textile fibers, in particular to avoid the redeposition of the soiling removed during washing.
• the main object of the invention is new agents with anti-deposition and soil removal properties which are particularly effective and relatively inexpensive.
• Another subject of the invention relates to washing compositions using these new anti-fouling agents.
• latex has the usual meaning, that is to say, the aqueous dispersions of polymers forming heterogeneous systems comprising a continuous liquid phase, water and a solid discontinuous phase.
• the alkali-soluble latexes of the invention which are the subject of the patent application are latexes in the dispersion state at a certain pH, in particular acidic or neutral, and which, when the pH increases, see the above-mentioned polymerized particles disintegrate. , which thus leads to aqueous solutions of polymers.
• the latexes which are suitable in the context of the invention are those which during increases in pH are likely to undergo a variation in their configuration depending on the pH of the detergent bath.
• the alkali-soluble latexes used are generally well known products. Their preparation, their physical and chemical characteristics are considered here as part of the prior art.
• the object of the present invention has been to select, from the range of latexes described, a field of latex compositions, on the one hand, which can be synthesized at low cost and which, on the other hand, have improved anti-fouling and anti-fouling properties compared with the latexes described in the prior art.
• the latexes which are the subject of the present application are all vinyl latexes either composed of vinyl acetate-unsaturated carboxylic acid copolymers optionally grafted with sulfonic polyesters or of (meth) acrylic-carboxylic acid copolymers grafted with sulfonic polyesters.
• alkali-soluble latex which is very suitable in the context of the present invention, mention may be made of latexes based on vinyl esters. More particularly, it is possible to use the latexes based on vinyl esters, on ethylenically unsaturated mono or dicarboxylic acids and optionally either (meth) acrylic esters or of water-soluble monomers such as acrylamide or vinyl sulfonate.
• acid mention will in particular be made of maleic, crotonic, (meth) acrylic or itaconic acids. Generally, the acid level is at least 3% and preferably between 3 and 8%.
• vinyl ester particular mention will be made of vinyl acetate.
• the first type of alkali-soluble latex which is the subject of the present invention also consists of the latexes based on vinyl esters, previously described, polymerized in the presence of polyester sulfonate.
• the second type of alkali-soluble latex, object of the present invention consists of (meth) acrylic esters and of carboxylic acids grafted with polyester sulfonates.
• latexes based on (meth) acrylic esters on mono or dicarboxylic acids, ethylenically unsaturated and optionally other monomers such as styrene or butadiene.
• alkyl (meth) acrylates the alkyl chain of which preferably contains 1 to 4 carbon atoms such as methyl or ethyl (meth) acrylate.
• acids mention may be made particularly of (meth) acrylic, itaconic or maleic acids.
• the acid content (percentage by weight of monomer in the product) is at least 10% and generally it is between 10% and 20%.
• the level of polyestersulfonate relative to the monomers is preferably less than 10%.
• the sulfonated polyesters used even more preferably in the context of the present invention are those containing approximately 60% of phthalyl or succinyl group for approximately 40% of ethylene oxide group.
• Phthalic acid is distributed between its isomers approximately as follows: 80% terephthalic acid for 20% isophthalic acid. A molar quantity of sulfoisophthalic acid corresponding to approximately 15% of the previously indicated acid mixture is added to this acid mixture.
• the latexes which are the subject of the present invention are preferably chosen from those of the first group of alkali-soluble latexes which have a composition which corresponds to the following distribution: - 84 to 96% vinyl acetate, - 3 to 6% of acrylic or crotonic acid or one of its derivatives and - 1 to 10% of sulfonated polyester.
• latexes whose composition is within the following limits: - vinyl acetate 87 - 94% - crotonic or acrylic acid 4 - 5% - sulfonated polyester 2 - 8% and especially latexes whose acid is acrylic acid.
• the preceding products having undergone partial or total hydrolysis of the vinyl acetate groups, that is to say a transformation of vinyl acetate into vinyl alcohol.
• the detergent compositions containing said latex also form part of the invention, they preferably contain at least 0.1% of latex as described above and even more preferably 0.4%.
• the detergent compositions may also contain, as washing auxiliaries, pyrophosphates, metaphosphates, tripolyphosphates of alkali metals, zeolites, surfactants, a bleaching system, enzymes, optical brighteners, perfumes, silicates etc .
• the latex can also be incorporated into a rinsing composition, which of course makes it possible to add the latex to the bath during rinsing.
• the redeposition of soiling is a cumulative phenomenon which manifests itself by graying of the laundry after a significant number of washing cycles.
• the method used consists of washing tissue samples several times in the presence of the additive to be tested, and of soiled tissue.
• the experimental conditions are as follows:
• each pot of the tergotometer contains: . 4 cotton test tubes (10 ⁇ 12 cm) . 4 PE / C test pieces (10 ⁇ 12 cm) . 4 polyester test pieces (10 ⁇ 12 cm) . 4 KREFELD soiled cotton test tubes (10 ⁇ 12 cm) or: 4 KREFELD soiled cotton test tubes and 2 EMPA soiled cotton test tubes (10 ⁇ 12 cm) . 500 ml of detergent solution (the detergent concentration is 6g / l.) . Bath ratio 1/25
• the reflectance measurement R y is carried out using a GARDNER photometer filter y on 4 thicknesses of tissue.
• the products tested are particularly active on synthetic fibers, as well as on a mixture of fibers.
• the reflectance measurements presented in the tables relate only to polyester fabrics.
• the weight composition of the detergent formula used is as follows: Sodium alkybenzene sulfonate 7% Sodium stearate 3% Cémulsol® DB 6/18 2.5% Cémulsol® LA 90 2.5% Sodium tripolyphosphate 28.75% Sodium pyrophosphate 2% Sodium orthophosphate 0.5% Sodium diisilicate 9.35% Sodium sulfate 17.5% Tinopal® SOP 0.2% Tinopal® DMS X 0.2% Esperase enzyme Novo 0.3% Sodium perborate 25% Magilex® 120 1% 0.2% sodium EDTA
• test referenced white corresponds to the five washes of fabrics in the presence of soiling and in the absence of additive.
• Example 1 various tests are carried out by modifying the concentration of additive in the detergent bath. - addition in post addition at different concentrations. - detergent concentration 6g / 1. - KREFELD soiling
• the cellulose ether amplifies the redeposition while the claimed additives remain effective.
• a detergent such as TPP, ionic surfactants, sodium silicate, sodium sulfate and water are mixed to form a slurry which constitutes "the slurry". This very alkaline mixture is then spray dried to obtain a powder. Non-ionic surfactants, bleaches, enzymes and perfumes are then added.
• formula X prepared from the control slurry without additives.
• Y formula prepared from the slurry control without additive, the additive No. 5 is introduced in post addition at 0.42% of the formula
• Z formula prepared from the slurry containing 5 No. Additive, weight percent of additive No. 5 in the formula is 0.42%.
• the results obtained with the additive 5 introduced into a slurry are of the same order of magnitude as those obtained when this additive is introduced into the detergent bath.
• the product retains its anti-depositing properties when introduced into a slurry.
• the method used consists of washing tissue samples in the presence of the additive to be tested, depositing stains on these fabrics and rewashing them.
• the results obtained reflect the affinity of the textiles thus conditioned for soiling.
• the experimental conditions are as follows.
• Packaging a washing cycle is carried out in the presence of the additive to be tested.
• the additive can be introduced either into the detergent bath or during rinsing.
• Staining using a burette, 4 drops of drain oil are placed in the center of the tissue sample placed on a "watch glass”. The fabrics are then placed in an oven at 60 ° C for one hour. Half of the samples are thus soiled. .
• Measurement of the reflectance of stained fabrics (GARDNER, filter Y).
• Washing we operate in the same way as for packaging, but in the absence of additive. Each linitest jar thus contains two stained samples and two non-stained samples of each quality of fabric. . Reflectance measurement after washing (GARDNER, filter Y). The reflectance of stained fabrics indicates the anti-fouling effect.
• R s reflectance of soiled fabric, before washing
• R0 reflectance of the soiled fabric, before washing
• R1 reflectance of soiled fabric, after washing.
• the products are added to the medium at a pH such that they remain in the form of a suspension (addition on the third rinse), the solubilization of the latex only taking place during the following washing (where the pH increases).
• composition of the formula used is as follows: TPP 21.5% 2% neutral pyrophosphate 0.5% anhydrous neutral trisodium phosphate Silicate 3Na 8.6% 3.0N stearate 3.0% TINOPAL DMSX® 0.2% TINOPAL SOP® 0.2% ESPERASE NOVO® 0.3% Perborate (Air liquid) 25.0% EDTA 0.2% LABS neutral 7.0% CEMULSOL 6 / 18® 2.5% CEMULSOL LA 90® 2.5% Na sulfate 24%
• test used during the examples which follow is to evaluate the anti-redepositing properties of a given additive.
• the method used consists of washing tissue samples in the presence of the additive to be tested, and of dirt deposited on cotton wicks.
• the results obtained reflect the affinity of the textiles thus conditioned for soiling.
• the experimental conditions are as follows.
• Linitest HANAU (2 pots per test) (automated tergotometer) Each Linitest jar contains:
• a washing cycle is carried out in the presence of the additive to be tested and of soiling impregnated on cotton wicks.
• the additive can be introduced either into the detergent bath or during rinsing.
• - Measurement of the reflectance of stained fabrics GARDNER, filter Y).
• Washing the procedure is the same as for packaging, but in the absence of an additive. Each linitest jar thus contains two stained samples and two non-stained samples of each quality of fabric.
• GARDNER filter Y Measurement of reflectance after washing. The reflectance of stained fabrics indicates the anti-fouling effect.
• the purpose of this example is to demonstrate the anti-redepositing effect of an alkali-soluble latex in the presence of a formula in which the builder or the washing aid consists of tripolyphosphate (TPP) and zeolite 4A .
• TPP tripolyphosphate
• composition of the formula used is as follows: TPP 19.0% Zeolite 17.0% 9.5% Na sulfate Neutral pyrophosphate 2.0% Anhydrous Na3PO4 0.5% Silicate 3Na 8.6% BLANOSE BWS 1.5% TINOPAL DMSX® 0.2% TINOPAL SOP® 0.2% ESPERASE NOVO® 0.3% Perborate 25.0% Na 3.0 stearate LABS 7.0 CEMULSOL 6 / 18® 2.5% CEMULSOL LA 90® 2.5% EDTA 0.2% H2O 1.0%
• This example illustrates the use of different latexes at a concentration of 100 ppm in a detergent formula having a concentration of 6 g / l of bath.

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• Chemical & Material Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Wood Science & Technology (AREA)
• Organic Chemistry (AREA)
• Detergent Compositions (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

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Cited By (46)

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• 1987
  • 1987-12-18 EP EP87402917A patent/EP0279134B1/de not_active Expired - Lifetime
  • 1987-12-18 ES ES87402917T patent/ES2018568B3/es not_active Expired - Lifetime
  • 1987-12-18 DE DE8787402917T patent/DE3765773D1/de not_active Expired - Fee Related
  • 1987-12-23 US US07/137,232 patent/US4925588A/en not_active Expired - Fee Related
  • 1987-12-23 DK DK684387A patent/DK684387A/da not_active Application Discontinuation
  • 1987-12-23 PT PT86467A patent/PT86467B/pt not_active IP Right Cessation

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