Disinfectant liquid laundry detergent

Abstract

The present invention relates to a ready-to-use disinfectant liquid laundry detergent characterized in that it comprises: – between 10 and 20% of an acid chosen from the group consisting of lactic acid, formic acid, salicylic acid, citric acid and lauric acid. – between 1 and 10% of anionic detergent – ​​between 5 and 15% of a disinfectant substance – between 0.1% and 5% of a non-ionic detergent and water.

Description

Title of the invention: Disinfectant liquid detergent Technical field of the invention

[0001] The present invention belongs to the field of detergent products. More particularly, the present invention relates to a liquid laundry detergent. The liquid laundry detergent according to the invention has the advantage of being able to be prepared from a product of plant origin while having satisfactory disinfection, washing and laundry protection properties. Prior art

[0002] There are many disinfectant detergents on the market. The basic principle of a detergent is to increase the power of water to dissolve dirt on the surface and inside the fibers of clothing.

[0003] Conventionally, a detergent may comprise surfactants, pH regulators, sequestering agents, complexing agents, enzymes, bleaching agents, optical brighteners, preservatives and / or perfumes.

[0004] Furthermore, certain detergents have disinfectant properties, that is to say they have the capacity to inactivate bacteria, yeasts and viruses thanks to the presence of specific components.

[0005] The majority of components included in currently commercialized detergents are obtained by chemical synthesis from non-renewable resources. These components have an impact on the environment during their production but also after use when they end up in wastewater.

[0006] Thus, for about twenty years, alternatives to detergents containing non-renewable components have been proposed. These detergents are mainly based on detergents of plant origin.

[0007] However, unlike other washing products, and in particular washing products for hard surfaces, detergents must meet very precise specifications so as not to damage clothes. Thus, the acidity of the composition must be limited despite the use of acidic components. Furthermore, the quantity of foam produced during use must be compatible with machine use.

[0008] There is therefore a demand for a disinfectant liquid detergent which can be prepared from products of plant origin and / or biodegradable and which do not damage clothing. Summary of the invention

[0009] Thus, the present invention relates to a ready-to-use disinfectant liquid detergent characterized in that it comprises: - between 10 and 20% of an acid chosen from the group consisting of lactic acid, formic acid, salicylic acid, citric acid and lauric acid. - between 1 and 10% anionic detergent - between 5 and 15% of a disinfectant substance - between 0.1% and 5% of a non-ionic detergent and water. In the context of the present invention, the term "detergent" refers to a composition specifically intended for cleaning body or household linens. In a preferred embodiment of the invention, the term "detergent" refers to a composition specifically intended for cleaning body or household linens in a dedicated machine.

[0010] In the context of the present invention, the term "disinfectant" refers to a composition which, at normal concentrations of use, is capable of inactivating Vaccinia Virus and Coronavirus according to standard EN14476 and Enterococcus faecium according to standard EN1276.

[0011] In the context of the present invention, the term "ready to use" is intended to designate a composition that does not need to be diluted before being introduced into the detergent compartment of a washing machine. For information purposes, a dose of 100 ml of the ready-to-use disinfectant liquid detergent according to the invention is intended to treat 5 kg of laundry in a conventional washing machine.

[0012] In the context of the present invention, the terms "%", "percentage", "percent" refer to a concentration equal to the ratio of the mass of a component relative to the total mass of the composition multiplied by 100.

[0013] According to a preferred embodiment of the invention, said acid is lactic acid.

[0014] According to a preferred embodiment, said lactic acid is at a concentration between 11 and 19%, preferably between 12 and 18%, even more preferably between 13 and 17% and most preferably between 15 and 17%.

[0015] According to a preferred embodiment, said anionic detergent is chosen from the group consisting of molecules including at least one hydrophobic moiety chosen from C6 to C12 alkyls, C6 to C12 alkylaryls, and C6 to C12 alkenyls and at least one anionic group chosen from sulfates, sulfonates, phosphates, polyoxyethylene sulfates, polyoxyethylene sulfonates, polyoxyethylene phosphates and the salts of such groups and their mixture.

[0016] According to an even more preferred embodiment, said anionic detergent is sodium lauryl sulfate.

[0017] According to a preferred embodiment, said anionic detergent is of plant origin.

[0018] According to a preferred embodiment, said anionic detergent is at a concentration between 2 and 9%, preferably between 3 and 8%, even more preferably between 6 and 8%.

[0019] According to a preferred embodiment, said non-ionic detergent is chosen from the group consisting of alkyl glycosides, alkyl polyglycosides, alkyl ethers, alkyl carbonates, alkoxylated alcohols and their mixture.

[0020] According to an even more preferred embodiment, said non-ionic detergent is capryl / caprylil glucoside.

[0021] According to a preferred embodiment, said anionic detergent is of plant origin.

[0022] According to a preferred embodiment, said non-ionic detergent is at a concentration between 1 and 5%, preferably between 1 and 4% and even more preferably between 1 and 3%.

[0023] In the context of the present invention, the term "disinfectant substance" designates a molecule which, used alone, is capable of inactivating Vaccinia Virus and Coronavirus according to standard EN14476 and Enterococcus faecium according to standard EN 1276.

[0024] According to a preferred embodiment, said disinfectant substance is chosen from the group consisting of ethanol, propan-1-ol and propan-2-ol and their mixture.

[0025] According to an even more preferred embodiment, said disinfectant substance is ethanol.

[0026] According to a preferred embodiment, said disinfectant substance is of plant origin.

[0027] According to a preferred embodiment, said disinfectant substance is at a concentration of between 6 and 14%, preferably between 7 and 13%, even more preferably between 8 and 12% and most preferably between 9 and 10%.

[0028] According to a preferred embodiment, said ready-to-use disinfectant liquid detergent according to the invention further comprises a gelling agent.

[0029] In the context of the present invention, the term "gelling agent" is intended to designate the components capable of increasing the viscosity of the composition into which they are introduced. According to a preferred embodiment of the invention, said "gelling agent" has no other properties in the context of said detergent and in particular no detergent, disinfectant or perfume properties.

[0030] According to a preferred embodiment, said gelling agent is chosen from the group consisting of polysaccharide polymers chosen from cellulose, alkylcelluloses, alkoxycelluloses, hydroxyalkylcelluloses, alkylhydroxyalkylcelluloses, carboxyalkylcelluloses, carboxyalkylhydroxyalkylcelluloses, natural polysaccharide polymers such as xanthan gum, guar gum, locust bean gum, tragacanth gum or their derivatives, polycarboxylate polymers, polyacrylamides, clays and mixtures thereof.

[0031] According to a preferred embodiment, said gelling agent is of plant origin.

[0032] According to an even more preferred embodiment, said gelling agent is xanthan gum.

[0033] According to a preferred embodiment, said gelling agent is at a concentration of between 0.1 and 1%, preferably between 0.1 and 0.8%, even more preferably between 0.1 and 0.5% and most preferably between 0.1 and 0.3%.

[0034] According to a preferred embodiment, said ready-to-use disinfectant liquid detergent according to the invention further comprises a perfume.

[0035] In the context of the present invention, the term "perfume" refers to any substance which gives off a pleasant or attractive odor for humans. According to a preferred embodiment, said perfume is an essential oil or a plant extract.

[0036] According to an even more preferred embodiment, said perfume is of plant origin.

[0037] According to a preferred embodiment, said perfume is at a concentration of between between 0.1 and 1%, preferably between 0.1 and 0.8%, even more preferably between 0.1 and 0.6% and most preferably between 0.3 and 0.5%.

[0038] According to a preferred embodiment, said ready-to-use disinfectant liquid detergent according to the invention comprises only components of plant origin.

[0039] According to a preferred embodiment, said ready-to-use disinfectant liquid detergent according to the invention comprises only biodegradable components with the exception of perfume.

[0040] According to a preferred embodiment of the invention, said ready-to-use disinfectant liquid detergent according to the invention has a pH of between 1.5 and 2.5.

[0041] In a preferred embodiment of the invention, the amount of water present in the liquid detergent according to the invention is sufficient to reach 100 percent.

[0042] The present invention also relates to a liquid detergent according to the invention consisting solely of the products mentioned above at the concentrations mentioned.

[0043] The present invention also relates to a concentrated composition characterized in that it makes it possible to obtain a liquid detergent according to the invention after dilution in water.

[0044] The present invention also relates to a method for cleaning and / or disinfecting laundry - remarkable in that it comprises a step during which the laundry is immersed in a solution comprising between 1 and 4% of a liquid detergent according to the invention.

[0045] According to a preferred embodiment, said solution is at a temperature above 30°C.

[0046] According to a preferred embodiment, the immersion time is between 25 and 40 min. Detailed description

[0047] Anionic detergents useful in the present invention include C1-18 alkyl benzene sulfonates and C10-20 primary, branched chain and random alkyl sulfates, secondary alkyl sulfates, unsaturated sulfates such as oleyl sulfate, C10-18 alkyl alkoxy sulfates, C10-18 alkyl alkoxycarboxylates, C10-18 glycerol ethers, C10-18 alkyl polyglycosides and corresponding sulfated polyglycosides, C12-18 alpha-sulfonated fatty acid esters. Conventional C10-C20 soaps may also be used, with C10-C16 branched chain soaps being preferred.

[0048] In a preferred embodiment, said anionic detergent is a primary C1-C18 alkyl sulfate, even more preferably a primary C1-C13 alkyl sulfate and most preferably C12 and most preferably sodium lauryl sulfate.

[0049] The non-ionic detergents which can be used in the context of the present invention are preferably chosen from the group consisting of primary alcohol ethoxylates, secondary alcohol ethoxylates, alkylphenol ethoxylates, alkylpolyoxyethers, alkylaminoalkoxylates, condensates of ethylene oxide and propylene oxide on primary alkanols, tertiary amino-oxides, alkylpolyglycosyls and mixtures thereof.

[0050] Suitable nonionic surfactants include condensation products of an alcohol with about 5 to 30 moles of ethylene oxide, for example, lauryl or myristyl alcohol condensed with about 16 moles of ethylene oxide (EO), tridecanol condensed with about 6 moles of EO, or myristyl alcohol condensed with about 10 moles of EO per mole of myristyl alcohol.

[0051] Condensates of 2 to 30 moles of ethylene oxide with mono- and triesters of C10-C20 alkanoic acids of sorbitan having an HLB of 8 to 15 can also be used as a non-ionic surfactant. Suitable surfactants include polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan trioleate and polyoxyethylene sorbitan tristearate.

[0052] The non-ionic surfactant is preferably an alkylglycosyl.

[0053] Alkyl mono- and polyglycoside surfactants have the general formula: R'0(R")n wherein R' is a monovalent organic radical containing from about one to about 30 carbon atoms. Preferably, the monovalent saturated aliphatic, unsaturated aliphatic, or aromatic radicals are selected from the group consisting of alkyl, hydroxyalkyl, alkenyl, hydroxyalkenyl, aryl, al-kylaryl, hydroxyalkylaryl, arylalkyl, alkenylaryl, arylalkenyl, and mixtures thereof. More preferably, R' represents monovalent saturated aliphatic groups that contain from 8 to about 16 carbon atoms. R" represents a moiety derived of a reducing saccharide containing 5 or 6 carbon atoms. The "n" represents the number of reducing saccharide moieties, or degree of polymerization, and has a value from 1 (monoglycoside) to about 20. Preferably, "n" has an average value of 1 to about 5. The term "alkyl polyglycosides" as used herein refers to both alkyl monoglycosides and alkyl polyglycosides.

[0054] The alkyl polyglycoside can be formed using reducing saccharides such as arabinose, xylose, glucose, galactose and others.

[0055] Preferably, the raw material is derived from sugar (glucose and sucrose) and the resulting surfactant is an alkylpolyglucoside. These surfactants have a hydrophobic fatty alcohol portion and a hydrophilic glucoside portion.

[0056] Preferably, the alkyl polyglycoside is chosen from decylglucoside, caprylyl / caprylglucoside, laurylglucoside, C8-C10 alkylpolyglucosides, C12-C16 alkylpolyglucosides, cocoglucoside and mixtures thereof.

[0057] Most preferably, the alkyl glycoside is caprylil / capryl glucoside.

[0058] Advantageously, the composition according to the present invention comprises a perfume, preferably chosen from the group consisting of essential oils of tea tree, lemon tree, lemongrass, lemon eucalyptus, eucalyptus radiata, true lavender, lavandin, sweet orange, grapefruit, Scots pine and mixtures thereof. Examples

[0059] [Tables 1] Component Percentage by weight Water qsp 100 Thickener 0.1-0.3 Lactic Acid 15-17 Sodium Lauryl Sulfate 6-8 Ethanol. 8-12 Caprylyl / capryl glucoside 1-3 Perfume 0.1-0.5

[0060] A detergent according to the invention comprising the components indicated in [Table 1] was prepared.

[0061] A washing efficiency test was carried out in an independent test laboratory. This test consists of evaluating the washing performance at 40°C from a set of standardized soils grouped into three categories (greasy / pigmentary, enzymatic and oxidizable) and a set of white fabrics.

[0062] In this test, the stains underwent a single wash and the white fabrics underwent washes iterative under the conditions defined below: Washing machine: Miele W 1935 Cycles used: Cotton 40°C - Short - 1200 rpm - 1 h 49 min Water hardness: 25±2°f Ca / Mg ratio: 3 / 1 Water inlet temperature: 15±2°C

[0063] Number of washes: 3 Number of sets per wash: 2 (wash efficiency) Number of sets per wash: 3 (degree of whiteness / greyness) Fabrics used Washing efficiency: Set CTTN, Degree of whiteness / greying: Cotton KREFELD 10 A Laundry load: 3.5 kg of cotton items previously washed once at 60°C with 70 g of ECE washing powder and once at 40°C without detergent.

[0064] The percentages of soil removal, the degree of whiteness and the graying are determined by spectrophotometric measurements.

[0065] The liquid detergent according to the invention has shown correct washing performance at 40°C superior to water with equivalent results on greasy / pigmentary and enzymatic soiling, superior on oxidizable soiling.

[0066] In terms of degree of whiteness and graying, the detergent according to the invention leads to results identical to water.

[0067] [Tables2] Activity Standards Strains Active concentration Conditions Contact time Temperature Bacteri de EN 1276 Enterococcus faecium 2% Dirt 30 minutes 40 °C Virucide EN 14476 Vacciniavirus 2% Dirt 30 minutes 40 °C Virucide EN 14476 Coronavirus 2% Dirt 30 minutes 40 °C

[0068] The disinfecting capacity of the liquid detergent according to the invention was measured under the conditions and according to the standards indicated in [Table 2].

[0069] The results obtained show a bactericidal and virucidal activity in accordance with those required by the cited standards.

[0070] The effect of the detergent according to the invention on the fibers and colors of the treated laundry was measured. During this test, the fabrics are washed cumulatively according to the conditions defined below.

[0071] Washing machine: Miele W 1935 Cycles used: Cotton 40°C - Short - 1200 rpm - 1 h 49 min Wool 40°C - 600 rpm - 39 min Water hardness: 25±2°f Ca / Mg ratio: 3 / 1 Water inlet temperature: 15±2°C Number of tests: 1 Number of washes: 20 Test fabrics: Cotton 11 A, polyester W30A, polyamide T365, wool W60A, silk W70A (fiber-friendly), 4 cotton fabrics, 4 polyester fabrics, 4 wool fabrics, 4 CTTN silk fabrics (color-friendly) Number of sets: 1 Additional soiling: 2 sheets of SBL 2004 with each wash Laundry load: 3.5 kg of cotton items previously washed once at 60°C with 70 g of ECE washing powder and 1 time at 40°C without detergent for cotton, polyester and polyamide, 1.5 kg of double-layer polyester knitwear for wool and silk The properties of a detergent product, to not damage the fibers and colors of washed fabrics, are evaluated by dynamometry for respect of the fibers and by spectrophotometric measurements for respect of the colors.

[0072] The liquid detergent according to the invention leads to a satisfactory level of wear of the fibers under the conditions of the test carried out. In addition, the color retention of Cotton, Polyester and Wool fabrics is also satisfactory.

[0073] The toxicity of the liquid detergent according to the invention was measured in vitro according to the OECD 431 reference of 06 / 18 / 2019 on reconstructed human epidermis of the EPISKIN™ model. The viability of the epidermis was measured by MTT colorimetric test.

[0074] The results obtained show that the liquid detergent according to the invention is not corrosive to the skin.

Claims

Claims

1. Ready-to-use disinfectant liquid detergent for cleaning and / or disinfecting laundry, characterized in that it comprises: - between 10 and 20% lactic acid - between 1 and 10% anionic detergent - between 5 and 15% of a disinfectant substance - between 0.1% and 5% of a non-ionic detergent and water.

2. Ready-to-use disinfectant liquid detergent for cleaning and / or disinfecting laundry according to the preceding claim, characterized in that said lactic acid is at a concentration of between 11 and 19%, preferably between 12 and 18%, even more preferably between 13 and 17% and most preferably between 15 and 17%.

3. Ready-to-use disinfectant liquid detergent for cleaning and / or disinfecting laundry according to one of the preceding claims, characterized in that said anionic detergent is chosen from the group consisting of molecules including at least one hydrophobic moiety chosen from C6 to C12 alkyls, C6 to C12 alkylaryls, and C6 to C12 alkenyls and at least one anionic group chosen from sulfates, sulfonates, phosphates, polyoxyethylene sulfates, polyoxyethylenesulfonates, polyoxyethylenephosphates and the salts of such groups and their mixture.

4. Ready-to-use disinfectant liquid detergent for cleaning and / or disinfecting laundry according to the preceding claim, characterized in that said anionic detergent is sodium lauryl sulfate.

5. Ready-to-use disinfectant liquid detergent for cleaning and / or disinfecting laundry according to one of the preceding claims, characterized in that said anionic detergent is at a concentration of between 2 and 9%, preferably between 3 and 8%, even more preferably between 6 and 8%.

6. Ready-to-use disinfectant liquid detergent for cleaning and / or disinfecting laundry according to one of the preceding claims, characterized in that said non-ionic detergent is chosen from the group consisting of alkyl glycosides, alkyl polyglycosides, alkyl ethers, alkyl carbonates, alkoxylated alcohols and their mixture.

7. Ready-to-use disinfectant liquid detergent for cleaning and / or disinfecting laundry according to one of the preceding claims ca- characterized in that said non-ionic detergent is capryl / caprylil glucoside

8. Ready-to-use disinfectant liquid detergent for cleaning and / or disinfecting laundry according to one of the preceding claims, characterized in that said non-ionic detergent is at a concentration of between 1 and 5%, preferably between 1 and 4% and even more preferably between 1 and 3%.

9. Ready-to-use disinfectant liquid detergent for cleaning and / or disinfecting laundry according to one of the preceding claims, characterized in that said disinfectant substance is chosen from the group consisting of ethanol, propan-1-ol and propan-2-ol and their mixture.

10. Ready-to-use disinfectant liquid detergent for cleaning and / or disinfecting laundry according to one of the preceding claims, characterized in that said disinfectant substance is ethanol.

11. Ready-to-use disinfectant liquid detergent for cleaning and / or disinfecting laundry according to one of the preceding claims, characterized in that said disinfectant substance is at a concentration of between 6 and 14%, preferably between 7 and 13%, even more preferably between 8 and 12% and most preferably between 9 and 10%.

12. Ready-to-use disinfectant liquid detergent for cleaning and / or disinfecting laundry according to one of the preceding claims, characterized in that it further comprises a gelling agent.

13. Ready-to-use disinfectant liquid detergent for cleaning and / or disinfecting laundry according to one of the preceding claims, characterized in that said gelling agent is chosen from the group consisting of polysaccharide polymers chosen from cellulose, alkylcelluloses, alkoxycelluloses, hydroxyalkylcelluloses, alkylhydroxyalkylcelluloses, carboxyalkylcelluloses, carboxyalkylhydroxyalkylcelluloses, natural polysaccharide polymers such as xanthan gum, guar gum, locust bean gum, tragacanth gum or their derivatives, polycarboxylate polymers, polyacrylamides, clays and their mixtures.

14. Ready-to-use disinfectant liquid detergent for cleaning and / or disinfecting laundry according to one of the preceding claims, characterized in that said gelling agent is xanthan gum.

15. Ready-to-use disinfectant liquid detergent for cleaning and / or disinfection of laundry according to one of the preceding claims, characterized in that said gelling agent is at a concentration of between 0.1 and 1%, preferably between 0.1 and 0.8%, even more preferably between 0.1 and 0.5% and most preferably between 0.1 and 0.3%.

16. Ready-to-use disinfectant liquid detergent for cleaning and / or disinfecting laundry according to one of the preceding claims, characterized in that it further comprises a perfume.

17. Ready-to-use disinfectant liquid detergent for cleaning and / or disinfecting laundry according to the preceding claim, characterized in that said perfume is of plant origin.

18. Ready-to-use disinfectant liquid detergent for cleaning and / or disinfecting laundry according to one of claims 16 to 17, characterized in that said perfume is at a concentration of between 0.1 and 1%, preferably between 0.1 and 0.8%, even more preferably between 0.1 and 0.6% and most preferably between 0.3 and 0.5%.

19. Method for cleaning and / or disinfecting laundry - characterized in that it comprises a step during which the laundry is immersed in a solution comprising between 1 and 4% of a liquid detergent according to one of claims 1 to 18.

20. Method according to the preceding claim, characterized in that said solution is at a temperature above 30°C.