CN116490597A - Aqueous cleaning composition - Google Patents

Aqueous cleaning composition Download PDF

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Publication number
CN116490597A
CN116490597A CN202180079781.6A CN202180079781A CN116490597A CN 116490597 A CN116490597 A CN 116490597A CN 202180079781 A CN202180079781 A CN 202180079781A CN 116490597 A CN116490597 A CN 116490597A
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Prior art keywords
acid
composition
surfactant
alkyl
organic
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CN202180079781.6A
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Chinese (zh)
Inventor
S·阿帕沃
N·阿查里亚
S·马哈帕特拉
P·鲍尔
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Unilever IP Holdings BV
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Unilever IP Holdings BV
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    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/83—Mixtures of non-ionic with anionic compounds
    • 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
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2075—Carboxylic acids-salts thereof
    • 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
    • C11D3/48—Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial compositions
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/14—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
    • C11D1/146—Sulfuric acid esters
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/29—Sulfates of polyoxyalkylene ethers
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/662—Carbohydrates or derivatives
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/72—Ethers of polyoxyalkylene glycols
    • 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
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/10—Objects to be cleaned
    • C11D2111/14—Hard surfaces

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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)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Detergent Compositions (AREA)

Abstract

The present invention relates to an aqueous cleaning composition comprising: 0.1 to 10 wt% of an anionic surfactant selected from the group consisting of alkyl sulfates, alkyl ether sulfates, and combinations thereof; 0.1 to 10 wt% of a nonionic surfactant selected from the group consisting of alcohol ethoxylates, short chain alkyl polyglycosides, and combinations thereof; and c.1 to 20% by weight of an organic acid having a pKa of 2.5 to 5.5; wherein the composition has a pH of 2 to 4; wherein the alcohol ethoxylate has 1 to 7 EO; and wherein the alkylpolyglycoside has C8 to C10 alkyl groups and wherein the composition is free of organic solvent. The invention also relates to a method and use of said composition for cleaning and disinfecting surfaces.

Description

Aqueous cleaning composition
Technical Field
The present invention relates to aqueous cleaning compositions comprising anionic surfactant, nonionic surfactant and organic acid and to methods and uses thereof for cleaning and disinfecting surfaces.
Background
Cleaning products are well known and play an important role in everyday life. Such products will contain surfactants and, if disinfection is desired, disinfectants (e.g., chlorine bleach), quaternary ammonium compounds (e.g., benzalkonium chloride) or chloroxylenol. Such conventional disinfectants appear to be effective against a wide range of microorganisms, however, these disinfectants have been reported to potentially affect human health.
Personal hygiene (i.e., how to care its own body) is traditionally distinguished from household care (including laundry and home care), which includes cleaning hard surfaces such as toilets, floors, and countertops.
More and more consumers prefer cleaning products with good environmental characteristics. That is, they are preferably "environmentally friendly" and have little or no impact on the environment when the product is used. Accordingly, there is an increasing demand for cleaning products that contain primarily or exclusively natural and/or biodegradable components. It is also desirable that the product be formulated to avoid disinfectants such as chlorine bleach, quaternary ammonium compounds such as benzalkonium chloride or chloroxylenol, and the like, while still providing disinfection benefits.
Organic acids such as citric acid and lactic acid are natural alternatives to synthetic disinfectants such as chlorine bleach, benzalkonium chloride and chloroxylenol. These organic acids exhibit antibacterial action, but may not themselves exhibit broad-spectrum antibacterial action, i.e., against gram-negative bacteria (e.g., escherichia coli and pseudomonas aeruginosa) and gram-positive bacteria (e.g., staphylococcus aureus and enterococcus hirae). Bacteria such as enterococcus hirae are known to be more difficult to combat. Furthermore, antiviral effects may be limited in potency and/or breadth, e.g., only against enveloped viruses and not against non-enveloped viruses. Non-enveloped viruses are known to be more difficult to combat.
In this regard, WO2004/18599 discloses acidic hard surface compositions comprising an acidic component comprising a water soluble organic acid, at least one anionic surfactant ingredient, at least one nonionic surfactant, at least one organic solvent ingredient, optionally one or more further ingredients and the balance water, which provide cleaning and disinfecting benefits. The composition exhibits surprising efficacy against a variety of gram positive and gram negative types of pathogenic bacteria, as well as against fungi in the absence of known cationic quaternary ammonium compounds known to be effective against pathogenic bacteria, and excludes other known prior art antimicrobial ingredients and bleaching agents.
In view of the foregoing, there remains a need for cleaning compositions having good environmental characteristics without compromising consumer satisfaction in terms of performance and disinfection efficacy against bacteria and/or viruses.
Disclosure of Invention
We have found that a specific combination of organic acid, anionic surfactant and nonionic surfactant allows the use of organic acid as a natural disinfectant while the cleaning composition exhibits broad spectrum antimicrobial efficacy. We have also found that the composition has antiviral properties.
Accordingly, in a first aspect, the present invention relates to an aqueous cleaning composition comprising:
0.1 to 10 wt% of an anionic surfactant selected from the group consisting of alkyl sulfates, alkyl ether sulfates, and combinations thereof;
0.1 to 10 wt% of a nonionic surfactant selected from the group consisting of alcohol ethoxylates, short chain alkyl polyglycosides, and combinations thereof; and
from 1 to 20% by weight of an organic acid having a pKa of from 2.5 to 5.5;
wherein the composition has a pH of 2 to 4;
wherein the alcohol ethoxylate has 1 to 7 EO; and is also provided with
Wherein the alkyl polyglycoside has a C8 to C10 alkyl group,
wherein the composition is free of organic solvents.
The invention further relates to a method of cleaning a surface comprising the step of contacting said surface with a composition of the invention in pure or diluted form for at least 15 seconds.
The invention also relates to the use of the composition of the invention for disabling bacteria on a surface.
The invention also relates to the use of the composition of the invention for disabling viruses on surfaces.
Detailed Description
Any feature of one aspect of the invention may be used in any other aspect of the invention. The word "comprising" is intended to mean "including", but not necessarily "consisting of …" or "consisting of …". In other words, the listed steps or options need not be exhaustive. Except in the operating and comparative examples, or where otherwise explicitly indicated, all numbers in this description indicating amounts of material or conditions of reaction, physical properties of materials and/or use are to be understood as modified by the word "about". The numerical range expressed in the form of "x to y" is understood to include x and y. When multiple preferred ranges are described in the format of "x to y" for a particular feature, it is to be understood that all ranges combining the different endpoints are also contemplated. Unless otherwise indicated, amounts used herein are expressed in weight percent based on the total weight of the composition and are abbreviated as "wt-%". The use of any and all examples, or exemplary language, e.g., "such as", provided herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. Room temperature is defined as a temperature of about 20 degrees celsius.
Aqueous cleaning composition
The cleaning composition of the present invention is an aqueous cleaning composition, that is, the composition comprises water. The amount of water will depend on the desired concentration of the other ingredients but is at least 50 wt%, for example at least 60 wt% or at least 70 wt%, but typically no more than 99 wt%. The amount of water is preferably 50-98 wt.%, more preferably 60-95 wt.%, even more preferably 70-90 wt.%.
The composition is liquid, i.e. it can be poured and has a viscosity of 1 to 1000mpa.s@20s-1 at 25 ℃. Viscosity was measured using an AR 1000 rheometer (TA instruments) using a 4cm,2℃cone plate geometry at 20s-1 and 25 ℃. The compositions may have a higher or lower viscosity depending on the desired use characteristics. For example, if the composition is to be used in a trigger spray bottle, a more dilute (water thin) viscosity is required. If dispensed from squeeze bottles, a more viscous consistency may be desired. A more viscous viscosity may also be desirable if the cleaning product is a toilet cleaning product. Preferably, the composition has a viscosity of 100 to 700mpa.s@20s-1, more preferably 200 to 600 mpa.s@20s-1. The desired viscosity may suitably be obtained by known methods, for example using viscosity modifiers.
Anionic surfactants
The compositions of the present invention comprise 0.1 to 10 wt% anionic surfactant. The anionic surfactant may be suitably selected from known anionic surfactants such as sulfate-based surfactants (e.g., sodium lauryl ether sulfate and sodium lauryl sulfate) and sulfonate-based surfactants (e.g., alpha-olefin sulfonate, alkylbenzenesulfonate, and methyl ester sulfonate).
Typically, the anionic surfactant comprises a sulfate-based surfactant.
Preferred anionic surfactants are alkyl ether sulphates of formula I and alkyl sulphates of formula II.
Formula I: (R) 1 -(OR’) n -O-SO 3 - ) x M x+ Wherein:
R 1 a C8-C16, preferably C12-C14, alkyl chain, saturated or unsaturated; preferably, R 1 Saturated C8-C16, more preferably saturated C12-C14 alkyl chains;
r' is ethylene;
n is 1 to 18, preferably 1 to 15, more preferably 1 to 10, still more preferably 1 to 5, even more preferably 1 to 3;
x is equal to 1 or 2;
M X+ are suitable cations that provide electrical neutrality, preferably sodium, calcium, potassium or magnesium, more preferably sodium cations.
Preferably, the surfactant of formula I is sodium lauryl ether sulfate having 1 to 3 ethylene oxide units per molecule, more preferably sodium lauryl ether sulfate having 1 to 2 ethylene oxide units per molecule.
Formula II: (R) 1 -O-SO 3 - ) x M x+ Wherein:
R 1 a C8-C16, preferably C12-C14, alkyl chain, saturated or unsaturated; preferably, R 1 Saturated C8-C16, more preferably saturated C12-C14 alkyl chains;
x is equal to 1 or 2;
M x+ are suitable cations that provide electrical neutrality, preferably sodium, calcium, potassium or magnesium, more preferably sodium cations.
Preferably the surfactant of formula II is sodium lauryl sulfate. Suitable examples include alkyl sulphates of synthetic origin under the trade names Safol 23, dobanol 23A or 23S, lial 123S, alfol 1412S, empicol LC3, empicol 075 SR. Other suitable and preferred examples include alkyl sulfates of natural origin commercially available under the trade names Galaxy 689, galaxy 780, galaxy 789, galaxy 799 SP.
Preferably, the anionic surfactant is selected from the group consisting of alkyl sulfates, alkyl ether sulfates, and combinations thereof.
The composition preferably comprises from 0.25 to 8 wt%, more preferably from 0.5 to 6 wt%, even more preferably from 1 to 5 wt% of anionic surfactant.
Nonionic surfactant
The compositions of the present invention comprise from 0.1 to 10 wt% of a nonionic surfactant selected from the group consisting of alcohol ethoxylates, short chain alkyl polyglycosides, and combinations thereof.
Alcohol ethoxylates
The alcohol ethoxylate has 1 to 10 EO. Suitable alcohol ethoxylate surfactants include condensation products of higher alcohols (e.g., alkanols containing from about 8 to 18 carbon atoms in a straight or branched chain configuration) condensed with from about 1 to 10 moles of ethylene oxide, such as lauryl or myristyl alcohol condensed with about 16 moles of Ethylene Oxide (EO), tridecyl alcohol condensed with about 6 moles of EO, myristyl alcohol condensed with about 10 moles of EO per mole of myristyl alcohol, condensation products of EO with coco fatty alcohol fractions (mixtures of fatty alcohols containing alkyl chain lengths of from 10 to about 14 carbon atoms), and wherein the condensate contains about 6 moles of EO per mole of total alcohol or about 9 moles of EO per mole of alcohol, and tallow alcohol ethoxylates containing from 6EO to 10EO per mole of alcohol. Preferably, the alcohol ethoxylate has 3 to 9 EO, more preferably 5 to 8 EO, even more preferably 7 EO. Particular preference is given to laurinol (laureth 5, laureth 7 and laureth 9) condensed with 5, 7 and 9 mol of ethylene oxide. Preferably, the alcohol ethoxylate surfactant is selected from the group consisting of laureth 5, laureth 7 and laureth 9, or mixtures thereof.
The nonionic surfactant may be selected such that it comprises a mixture of fatty alcohols, for example a mixture of C12, C13, C14 and C15 and 1-10 ethoxylate groups in varying proportions. Such nonionic surfactants are commercially available from Shell as NEODOLTM series. For example, NEODOLTM 91-51, which is a mixture of C9, C10 and C11 with 5 EO; NEODOLTM 91-61, which is a mixture of C9, C10 and C11 having 6 EO; NEODOLTM 91-8, which is a mixture of C9, C10 and C11 having 8 EO; NEODOLTM 23-2, a mixture of C12 and C13 having 2 EO; NEODOLTM 25-3 being a mixture of C12, C13, C14 and C15 having 3 EO; NEODOLTM 25-7 being a mixture of C12, C13, C14 and C15 having 7 EO; and NEODOLTM 45-7, which is a mixture of C14 and C15 having 7 EO. Particularly preferred nonionic surfactants are mixtures of C12, C13, C14 and C15 having 7 EO.
Preferably, the nonionic surfactant comprises an alcohol ethoxylate surfactant. Since alcohol ethoxylates are particularly beneficial for antimicrobial efficacy in the compositions of the present invention, it is particularly preferred that the nonionic surfactant is an alcohol ethoxylate surfactant.
Short chain alkyl polyglycoside
As used herein, an alkylpolyglycoside is of formula R 1 O(R 2 O) b (Z) a Wherein R is a compound of formula (I) 1 Is an alkyl group having from about 8 to about 10 carbon atoms; r is R 2 Is a toolAn alkylene group having 2 to 4 carbon atoms; z is a sugar residue having 5 or 6 carbon atoms; b is a number having a value of 0 to about 12; and a is a number having a value (degree of polymerization) of from 1 to about 6. Because of the method by which it is synthesized, the alkylpolyglycoside is typically present as a mixture of alkylpolyglycosides having different amounts of carbon atoms in the alkyl group and different degrees of polymerization. Thus, when referring to an alkyl polyglycoside, alkyl groups are generally referred to as having a range of carbon atoms (e.g., C8/10 refers to a range of alkyl groups having 8-10 carbon atoms), and the degree of polymerization is generally referred to as the average degree of polymerization of the mixture.
Preferably, the alkyl polyglycoside is an alkyl polyglucoside surfactant.
Preferred alkyl polyglycosides suitable for use in the disclosed cleaning formulations include those having formula I wherein Z is a glucose residue, b is 0, R 1 Is an alkyl group containing 8 to 10 carbon atoms, and a has an average value of about 1-2. Such alkyl polyglucosides are commercially available, e.g. under the trade nameAlkyl polyglucoside compositions from BASF (formerly Cognis Corporation) comprising +.>215CS UP and 225DK.
The composition preferably comprises from 0.25 to 8 wt%, more preferably from 0.5 to 6 wt%, even more preferably from 1 to 5 wt% of nonionic surfactant.
Preferably the weight ratio of anionic to nonionic surfactant is from 4:1 to 1:4, more preferably from 3:1 to 1:3, even more preferably from 2:1 to 1:2.
Organic acid
The composition comprises 1-20% by weight of an organic acid. Organic acids are used as natural disinfectants and, together with the anionic and nonionic surfactants present in the compositions of the present invention, provide broad spectrum antimicrobial efficacy.
The organic acid is selected from lactic acid (pka=3.86), acetic acid (pka=4.76), malonic acid (pka=2.85), adipic acid (pka=4.43), glutaric acid (pka=3.76), glycolic acid (pka=3.83), maleic acid (pka=1.9), succinic acid (pka=4.2), malic acid (pka=3.4), tartaric acid (for l+ pka=2.89; and for meso, pka=3.22), caproic acid (pka=4.88), cyclohexanoic acid (pka=4.82), heptanoic acid (pka=4.8), caprylic acid (pka=4.89), 4-methyl caprylic acid (pa=5.23), nonanoic acid (pka=4.95), capric acid (pka=4.9), benzoic acid (pka=4.2), 4-methoxybenzoic acid (pka=4.37) and combinations thereof.
More preferably, the organic acid is selected from lactic acid, glycolic acid, and mixtures thereof. Even more preferably, the organic acid is selected from lactic acid, glycolic acid, and mixtures thereof. Most preferably, the organic acid selected is glycolic acid.
Preferably, the amount of organic acid in the composition is from 1.5 to 12% by weight, more preferably from 2 to 10% by weight.
Preferably, the weight ratio of surfactant to organic acid is from 20:1 to 1:20, preferably from 10:1 to 1:10, more preferably from 5:1 to 1:5.
pH of the composition
The pH of the composition is in the range of 2.0-4.0, preferably 2.5-4.0, even more preferably 3.0-3.5. The pH of the composition may be adjusted using suitable pH adjusting agents such as hydrochloric acid and sodium hydroxide.
Water-soluble rheology-modified polymers
To achieve the desired viscosity, the cleaning composition may comprise from 0.01 to 1% by weight of the water-soluble rheology-modifying polymer. Rheology modifying polymers are known and their ability to impart viscosity to the composition may depend in part on the presence or absence of other ingredients.
Water-soluble polymers can be used to thicken the compositions, including nonionic, cationic and amphoteric polymers. Suitable polymers include hydroxyethylcellulose, modified hydroxyethylcellulose, guar gum, tragacanth, xanthan gum, acacia gum,C 13S、/>C 14S、/>C 17、/>HP105 (hydroxypropyl guar),HP60 (hydroxylated propylated guar), and>s (Natural guar gum),>Aqua CC、Merquat TM 100、Merquat TM 280、Merquat TM 281 and Merquat TM 550 (from Lubrizol), polyethylene glycols such as Polyox TM WSR-205(PEG 14)、Polyox TM WSR N-60K (PEG 45) and Polyox TM WSR-301 (PEG 90), and hydrophobically modified hydroxyethyl cellulose, such as Polysurf TM 67CS, cetyl hydroxyethylcellulose.
Chelating agent
The cleaning compositions of the present invention may comprise from 0.1 to 10 wt% of the chelating agent. Preferably the amount of chelating agent is 0.25-5 wt%, preferably 0.5-3 wt%. The chelating agent has a binding capacity of at least 280mg Ca/g, preferably at least 290mg Ca/g, more preferably at least 300mg Ca/g.
Typical values are mentioned in the following table.
Chelating agent mg Ca/g
Polyacrylic acid 219
GLDA 294
Gluconic acid sodium salt 300
MGDA 401
Polyitaconic acid sodium salt 311
Suitable chelating agents are those based on organic phosphonates, aminopolycarboxylates and carboxylic acids. It will be appreciated that suitable chelating agents include acid forms and salts thereof.
Examples of chelating agents based on organic phosphonates include diethylenetriamine penta (methylenephosphonic acid) (DTPMP), hydroxyethylenediphosphonic acid (HEDP), and nitrilotrimethylene phosphonic acid (NTMP).
Examples of chelating agents based on amino polycarboxylates include ethylenediamine tetraacetic acid (EDTA), diethylenetriamine pentaacetic acid (DTPA), nitrilotriacetic acid (NTA), methylglycine diacetic acid (MGDA) and L-glutamic acid N, N-diacetic acid (GLDA).
Examples of carboxylic acid-based chelating agents include gluconic acid and itaconic acid.
Preferably the chelating agent is biodegradable. Preferred biodegradable chelating agents are nitrilotriacetic acid (NTA), ethylenediamine disuccinic acid (EDDS), iminodisuccinic acid (IDS), methylglycine diacetic acid (MGDA), L-glutamic acid N, N-diacetic acid (GLDA), 2-hydroxyethyliminodiacetic acid (HEIDA), ethylenediamine-N, N '-disalonic acid (EDDM), ethylenediamine-N, N' -dipentaerythritol acid (EDDG), 3-hydroxy-2, 2-iminodisuccinic acid (HIDS) and 2, 6-pyridinedicarboxylic acid (PDA), gluconic acid and itaconic acid.
Solvent(s)
The composition according to the invention is free of organic solvents. The term "free of organic solvent" in this context means that the composition comprises less than 0.4 wt.% of organic solvent, more preferably less than 0.2 wt.%, most preferably less than 0.1 wt.%.
Preferably, the cleaning composition comprises 0 to 0.1 wt% of a solvent having a flash point of at most 15 ℃, more preferably at most 20 ℃, even more preferably at most 30 ℃. An example of such a solvent is isopropanol with a flash point of 11.7 ℃ and ethanol with a flash point of 13 ℃. More preferably, the composition is free of solvents having a flash point of at most 15 ℃, more preferably at most 20 ℃, even more preferably at most 30 ℃.
Biodegradability of the material
At least some of the ingredients of the cleaning composition are biodegradable based on the total product calculation excluding water and inorganic materials. In order to be truly biodegradable, the substance or material should be broken down into carbon dioxide (plant nutrients) and water. Naturally occurring minerals that do not pose a hazard to the ecosystem are already in their natural mineral state and do not require biodegradation.
Preferably at least 70 wt%, more preferably at least 90 wt%, still more preferably at least 95 wt% of the ingredients are biodegradable. Preferably at least 99% by weight is biodegradable, even more preferably substantially all of the ingredients are biodegradable.
For the purposes of the present invention, the term "biodegradable" refers to "inherently and ultimately biodegradable" according to the OECD 302 guideline/test. Preferably, the term "biodegradable" refers to "readily and ultimately biodegradable" according to OECD 301 series or 310 guidelines/tests.
Preferably, at least part of the organic components of the cleaning composition are natural, calculated on the basis of the total product excluding water. For the purposes of the present invention, naturally defined as comprising at least 50% by weight of ingredients of plant-derived (i.e., from natural sources) material; preferably at least 70 wt%, more preferably at least 90 wt%, still more preferably at least 95 wt%. Preferably at least 99% by weight is of vegetable origin, even more preferably substantially all of the natural ingredients are of vegetable origin.
Preferably at least 70 wt%, more preferably at least 90 wt%, still more preferably at least 95 wt% of the organic component is natural. Preferably at least 99% by weight is natural, even more preferably substantially all organic components are natural.
Preferably, the compositions of the present invention are free of quaternary ammonium compounds.
Alkylbenzene sulfonate (ABS)
ABS is not readily available from renewable carbon or bio-renewable carbon sources. Thus, the detergent compositions of the present invention are free of alkylbenzene sulfonates and their derivatives.
Alkylbenzenesulfonates (ABS) and derivatives thereof include water-soluble alkali metal salts of organic sulfonic acids having alkyl groups which typically contain from about 8 to about 22 carbon atoms, preferably from 8 to 18 carbon atoms, still more preferably from 12 to 15 carbon atoms and may be saturated or unsaturated. Examples include sodium salts of linear alkylbenzene sulfonic acids, alkyltoluene sulfonic acids, alkylxylene sulfonic acids, alkylphenol sulfonic acids, alkylnaphthalene-sulfonic acids, diamyl naphthalene-ammonium sulfonate and dinonyl naphthalene-sodium sulfonate, and mixtures with olefin sulfonic acids.
Preferably, the composition of the present invention does not contain any sulphonated surfactant.
Cleaning method
The invention also relates to a method of cleaning a surface, the method comprising the steps of:
a. contacting the surface with a composition according to the invention in pure or diluted form for at least 15 seconds;
b. optionally rinsing the surface with water; and
c. optionally drying the surface.
Typically, the surface is contacted with the cleaning composition for 15 seconds to 60 minutes. Preferably 30 seconds to 60 minutes, more preferably 1 to 45 minutes, even more preferably 5 to 30 minutes. Typical contact times for hand washing are at least 20 seconds.
The surface may be any surface suitable for cleaning, including human skin such as hands, and household hard surfaces such as cookware or kitchen ware, floors, toilets, bathroom surfaces, and kitchen surfaces.
Preferably, the surface is a home care hard surface, more preferably the surface is a toilet surface.
The cleaning of the toilet surface is preferably carried out with a clean solution having a higher viscosity (e.g. 200-600 mpa.s@20s-1). The contact time is generally long, typically varying between 30 seconds and 60 minutes, after which the toilet surface is rinsed with water.
Typically, the compositions of the present invention are applied to hard surfaces in neat or diluted form. The composition may be applied by any known method, such as by using a cleaning implement, such as a wipe, sponge, paper, cloth or wipe, or any other application, directly or indirectly. The applied composition may be cleaned with or without water using a cleaning implement such as a scrub, sponge, paper, cloth or wipe, or rinsed off with water, optionally running water.
Preferably, the surface is human skin. For hand washing, the skin surface of the hand is typically washed with a quantity of clean cleansing composition having a small amount of water such that foam is generated and the cleansing composition is in contact with the skin for at least 15 seconds, preferably at least 20 seconds. Typical dilution rates are 30-70%, preferably 40-60%, for example 50%. The cleaning composition, including the foam, is then rinsed with water and the hand is dried, for example by using a blower or paper cloth or towel.
Use of the same
The antimicrobial efficacy of the compounds can be determined using several protocols, of which EN1279 and EN13697 are most commonly used. EN1279 is a so-called suspension test, and EN13697 is a so-called surface test. For household hard surfaces, EN13697 is a better indicator. We have found that some known cleaning compositions do not always exhibit the desired antimicrobial efficacy when tested according to EN 13697.
The invention also relates to the use of a composition according to the invention for disabling pathogens on a surface. The specific combination of anionic surfactant, nonionic surfactant and organic acid allows for broad antimicrobial efficacy without the need for synthetic disinfectants.
The invention also relates to the use of a composition according to the invention for disabling viruses on a surface. The specific combination of anionic surfactant, nonionic surfactant and organic acid allows antiviral efficacy without the need for synthetic disinfectants. This particular combination is effective against both enveloped and non-enveloped viruses. Preferably, the virus comprises a non-enveloped virus, such as COVID-19 (or Sars-Cov-2).
For the purposes of the present invention, "disabling" is defined to include killing, interrupting growth, and limiting the ability to infect animals. Preferably, "disabling" is defined as killing.
The invention will now be illustrated by the following non-limiting examples.
Examples
The materials used are as follows:
sodium Lauryl Sulfate (SLS)
-having about 7 moles of C12-C15 fatty alcohol polyglycol ether (EO 7):125-7 from SASOL
-short chain alkyl polyglycosides (APG 215):215UP from BASF
Long chain polyglycoside (APG 420):420UP from BASF
The scheme is as follows:
the determination of the germ removal efficacy of the compositions shown in table 1 below, as well as the control compositions, was performed using EN13697 or EN1276 protocol for assessing antimicrobial efficacy. Soil cleaning conditions were established with 0.03% Bovine Serum Albumin (BSA); and the fouling conditions were established at a contact time of 5 minutes by using 0.3% bsa.
The following organisms were used as test organisms:
gram-positive bacteria:
staphylococcus aureus (ATCC 6538); and
enterococcus shigella (ATCC 10541),
gram-negative bacteria:
coli (ATCC 10536); and
pseudomonas aeruginosa (ATCC 15442).
Differential media was used to count test organisms (to eliminate bacillus growth with test organisms).
Preparation of test organism suspensions:
from 24 hours of plate culture (no more than 3 passages), a saline suspension of the above test organisms was prepared. The optical density of the saline suspension was adjusted at 620nm to obtain 10 8 cells/mL. All glycerol stocks of bacteria were maintained at-80 ℃; and recovered before the experiment was performed.
Preparation of test product dilutions:
the pure (i.e., undiluted) or diluted compositions were tested. Dilution is expressed as dilution fold. For example, 200x dilution means adding water to 10ml of cleaning composition to a total volume of 2000 ml.
Determination of antimicrobial efficacy:
1) 1mL of sterile BSA (clean or dirty) was placed in a sterile 15mL falcon tube and 1mL of test culture suspension was added.
2) The above mixture was then added to 8mL of test product at the desired dilution.
3) At the end of the contact time, the dilution neutralization method described below was used to neutralize the sample.
4) Dilution and neutralization method:
a. at the end of the contact time, 1mL of the test mixture was transferred to 9mL of the neutralization broth (this was a negative 1 (-1) dilution).
b. Serial dilutions were prepared to determine actual survivor counts; and
c. finally, a neutralization authentication method is described.
The neutralization verification method comprises the following steps:
this is done for all test organisms for all test products at the highest test concentration tested. The dilution neutralization method used is as follows:
a. to 8ml of the test product dilution at the highest test concentration was added 1ml of saline +1ml of BSA (clean or dirty).
After 5 minutes, 1ml of the above mixture was transferred to a tube containing 8ml of neutralization broth to be validated.
c. 1ml of 10 is added -5 Diluent, i.e. 10 3 Test organism suspension of cells (from 10 in sterile saline 8 Cell/ml test culture suspension diluted) into the above tube, waiting for 30 minutes. Consider the tube as an undiluted test system; and
after d.30 minutes, the undiluted test system and-1 diluent were inoculated.
All inoculations were performed on sterile trypsin soybean agar (TAS) plates. Incubating the plates at 37 ℃ for 24 to 48 hours; the results were recorded.
By standard
a) N is 1.5X10 8 And 5.0X10 8 (8, 17.ltoreq.lgN.ltoreq.8.70);
N 0 at 1.5X10 7 And 5.0X10 7 (7, 17. Ltoreq.lg N) 0 ≤7.70)；
b)N v0 Between 30 and 160, (3.0X10) 1 And 1.6X10 2 )；
N v At 3.0X10 2 And 1.6X10 3 Between (a) and (b);
c) A, B, C equal to or greater than 0.5 XN v0 The method comprises the steps of carrying out a first treatment on the surface of the Wherein the method comprises the steps of
N is the culture control count and,
N 0 is the culture control count in the final test system,
N v0 control counts for neutralization validation cultures; and
c is the neutralization validation count obtained for the test sample.
Log reduction was calculated as the difference between the Log of the culture control in the test mixture and the Log of the count obtained in the test mixture.
Example 1
To demonstrate the effect of the nonionic surfactant, formulations according to tables 1A and 1B were prepared. Antibacterial efficacy was tested as shown and the results were displayed.
TABLE 1A (weight percent based on total product)
Composition of the components 1 2
SLS 1.5 1.5
L-lactic acid 3 3
EO7 - 1.5
Water and its preparation method To 100 To 100
pH 2.5 2.5
Dilution of Purity of the water Purity of the water
Test scheme (cleaning) EN13697 EN13697
Time point 30 minutes 30 minutes
Pseudomonas aeruginosa >5 >5
Coli bacterium >5 >5
Staphylococcus aureus >5 >5
Enterococcus hirae 2.5 >5
TABLE 1B (weight percent based on total product)
Example 2
To demonstrate the effect of different types of nonionic surfactants, formulations according to tables 2 and 3 were prepared. Antibacterial efficacy was tested as shown and the results were displayed.
TABLE 2 (weight percent based on total product)
Composition of the components 5 6 7
SLS 1.5 1.5 1.5
L-lactic acid 3 3 3
APG 215 - - 1.5
APG 420 - 1.5 -
EO7 1.5 - -
Water and its preparation method To 100 To 100 To 100
pH 2.5 2.5 2.5
Dilution of Purity of the water Purity of the water Purity of the water
Test scheme (cleaning) EN13697 EN13697 EN13697
Time point For 5 minutes For 5 minutes For 5 minutes
Pseudomonas aeruginosa >5 >5 >5
Coli bacterium >5 >5 >5
Staphylococcus aureus >5 >5 >5
Enterococcus hirae >5 1.68 >5
TABLE 3 (weight percent based on total product)
Composition of the components 8 9 10 11
SLS 1.5 1.5 1.5 1.5
L-lactic acid 3 3 3 3
APG 215 - 1 - 0.5
EO7 1 - 0.5 -
Water and its preparation method To 100 To 100 To 100 To 100
pH 2.5 2.5 2.5 2.5
Dilution of Purity of the water Purity of the water Purity of the water Purity of the water
Test scheme (cleaning) EN13697 EN13697 EN13697 EN13697
Time point 15 minutes 15 minutes 15 minutes 15 minutes
Enterococcus hirae 4.5 3.7 4.1 2.5
Example 3
To show the effect of different types of organic acids, formulations according to table 4 were prepared. Antibacterial efficacy was tested as shown and the results were displayed.
TABLE 4 (weight percent based on total product)
Example 4
To show the effect of different pH, formulations according to table 5 were prepared. Antibacterial efficacy was tested as shown and the results were displayed.
TABLE 5 (weight percent based on total product)
Example 5
Diluted formulations according to table 6 were prepared. Antibacterial efficacy was tested as shown and the results were displayed.
TABLE 6 (weight percent based on total product)
Composition of the components 21
SLS 7.5
L-lactic acid 8
EO7 2.5
Water and its preparation method To 100
pH 2.5
Dilution of 200x
Test scheme (dirty) EN1276
Time point 15 minutes
Pseudomonas aeruginosa >5
Coli bacterium >5
Staphylococcus aureus >5
Enterococcus hirae >5
Example 6 Virus data
To test antiviral efficacy, the compositions in table 7 were used under clean conditions under standard protocol EN 14476. The test results are shown in table 8.
TABLE 7 (weight percent based on total product)
TABLE 8 results
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Claims (13)

1. An aqueous cleaning composition comprising:
0.1 to 10 wt% of an anionic surfactant selected from the group consisting of alkyl sulfates, alkyl ether sulfates, and combinations thereof;
0.1 to 10 wt% of a nonionic surfactant selected from the group consisting of alcohol ethoxylates, short chain alkyl polyglycosides, and combinations thereof; and
1 to 20% by weight of an organic acid selected from lactic acid, acetic acid, malonic acid, adipic acid, glutaric acid, glycolic acid, maleic acid, succinic acid, malic acid, tartaric acid, caproic acid, cyclohexanoic acid, heptanoic acid, caprylic acid, 4-methyl caprylic acid, pelargonic acid, capric acid, benzoic acid, 4-methoxybenzoic acid and mixtures thereof;
wherein the composition has a pH of 2 to 4;
wherein the alcohol ethoxylate has 1 to 7 EO; and is also provided with
Wherein the alkylpolyglycoside has C8 to C10 alkyl groups,
wherein the composition is free of organic solvents.
2. The composition of claim 1, wherein the anionic surfactant is an alkyl sulfate.
3. The composition of claim 1 or claim 2, wherein the alcohol ethoxylate has 3-7 EO.
4. A composition according to any one of claims 1 to 3, wherein the nonionic surfactant comprises an alcohol ethoxylate surfactant.
5. The composition of claim 4, wherein the nonionic surfactant is an alcohol ethoxylate surfactant.
6. The composition according to any one of claims 1-5, wherein the composition comprises 1.5-12 wt%, preferably 2-10 wt% of an organic acid.
7. The composition of any one of claims 1-6, wherein the organic acid is selected from lactic acid, glycolic acid, and mixtures thereof.
8. The composition of any of claims 1-7, wherein the weight ratio of anionic surfactant to nonionic surfactant is 4:1-1:4, preferably 3:1-1:3, more preferably 2:1-1:2.
9. The composition according to any one of claims 1 to 8, wherein the weight ratio of surfactant to organic acid is 20:1 to 1:20, preferably 10:1 to 1:10, more preferably 5:1 to 1:5.
10. A method of cleaning a surface comprising the steps of:
a. contacting the surface with the composition according to any one of claims 1 to 9 in pure or diluted form for at least 15 seconds;
b. optionally rinsing the surface with water; and
c. optionally drying the surface.
11. The method according to claim 10, wherein the surface is a household hard surface, preferably a toilet surface.
12. Use of a composition according to claims 1-9 for disabling pathogens on a surface.
13. Use of a composition according to claims 1-9 for disabling viruses on a surface.
CN202180079781.6A 2020-12-17 2021-12-16 Aqueous cleaning composition Pending CN116490597A (en)

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US6221823B1 (en) * 1995-10-25 2001-04-24 Reckitt Benckiser Inc. Germicidal, acidic hard surface cleaning compositions
DE19918183A1 (en) * 1999-04-22 2000-10-26 Cognis Deutschland Gmbh Cleaning agent for hard surfaces, typically in the form of a high foaming viscous gel, includes a combination of cationic surfactants, oligoglycosides and sulf(on)ate surfactants
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