CN111117813B - Liquid detergent composition and process for preparing the same - Google Patents
Liquid detergent composition and process for preparing the same Download PDFInfo
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- CN111117813B CN111117813B CN201911356538.5A CN201911356538A CN111117813B CN 111117813 B CN111117813 B CN 111117813B CN 201911356538 A CN201911356538 A CN 201911356538A CN 111117813 B CN111117813 B CN 111117813B
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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
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/37—Polymers
- C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C11D3/3719—Polyamides or polyimides
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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
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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
- C11D10/00—Compositions of detergents, not provided for by one single preceding group
- C11D10/04—Compositions of detergents, not provided for by one single preceding group based on mixtures of surface-active non-soap compounds and soap
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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
- 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
- C11D3/2086—Hydroxy carboxylic acids-salts thereof
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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
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/37—Polymers
- C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C11D3/373—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicones
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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
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/38—Products with no well-defined composition, e.g. natural products
- C11D3/386—Preparations containing enzymes, e.g. protease or amylase
- C11D3/38618—Protease or amylase in liquid compositions only
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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
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/38—Products with no well-defined composition, e.g. natural products
- C11D3/386—Preparations containing enzymes, e.g. protease or amylase
- C11D3/38627—Preparations containing enzymes, e.g. protease or amylase containing lipase
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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
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/50—Perfumes
- C11D3/502—Protected perfumes
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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
- C11D1/02—Anionic compounds
- C11D1/04—Carboxylic acids or salts thereof
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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
- C11D1/02—Anionic compounds
- C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
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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
- C11D1/02—Anionic compounds
- C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
- C11D1/29—Sulfates of polyoxyalkylene ethers
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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
- C11D1/72—Ethers of polyoxyalkylene glycols
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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
- C11D1/74—Carboxylates or sulfonates esters of polyoxyalkylene glycols
Abstract
The invention provides a liquid detergent composition and a preparation method thereof. The liquid detergent composition contains organic polyamide wax with a specific structure, so that the problems of collapse of a rheological structure and heat thickening caused by the fact that the pH application range of hydrogenated castor oil is narrow, and hydrolysis with lipase occurs can be solved, the liquid detergent composition has good rheological yield stress, and has a stable suspension effect on suspended matters such as microcapsule essence, capsule particles, grease emulsion, particle diameter solid and the like.
Description
Technical Field
The invention relates to daily chemical articles, in particular to a liquid detergent composition and a preparation method thereof.
Background
In recent 10 years, with the rapid growth of economy and the increasing improvement of living standard, consumers also put higher demands on washing products, and the rapid development of the detergent industry is promoted. To meet consumer demand, the market for fabric washing products continues to segment. As the liquid detergent, there are various products such as a wool detergent, a cotton fabric detergent, a chemical fiber product detergent, a collar cleaner, an underwear cleaner and the like. While the fabric washing products are subdivided in function, different characteristic attributes of the products are emphasized, such as: adding enzyme, perfuming, bleaching, color protecting and bleaching, high foaming, low foaming, sterilizing, antistatic, softening, phosphorus-free and other multifunctional products; the detergent corresponds to special detergents or nursing products such as enzyme-containing high-efficiency decontamination detergents, lasting fragrance detergents, phosphorus-free detergents, heavy-duty liquid detergents, fine fabric detergents, collar detergents, school clothes detergents, bleaching agents, softening agents and the like. It follows that the subdivision and multi-feature attributes of the product are the main development trend of the current liquid detergents.
The functional liquid detergent has the characteristics of unique function, simplicity and the like, and meets the requirements of consumers. By introducing suspended matters such as a softening agent, a microcapsule essence or a microcapsule antibacterial mite-killing agent into a liquid detergent system, the detergent has special functionality and corresponding functional effects such as softness, lasting fragrance, bacteriostasis, mite killing and the like, and is popular with consumers. However, when these suspensions are added to the base of detergent, there is a certain density difference between the suspensions and the base, and thus there is a problem that the suspensions are often layered, settled or floated in the system. To address this problem, conventional approaches typically use hydrogenated castor oil as a structurant or rheology agent for the system to achieve a stable suspension of the system for the benefit. Among other things, patent CN102224233A provides a process for preparing a liquid detergent composition containing encapsulated fragrances, using hydrogenated castor oil which crystallizes upon cooling from a premix of warm non-aqueous organic solvents to form a dendritic structure satisfying the suspending effect on the encapsulated fragrance. WO02/40627a2 also discloses a liquid detergent composition comprising a structuring system which also serves to stabilise the liquid detergent by forming linear and/or non-linear structuring systems from hydrogenated castor oil or hydroxyl-containing triesters and the like. Although hydrogenated castor oil has excellent suspending effect as a rheological suspending agent, its disadvantages are also apparent: because the hydrogenated castor oil structure contains a plurality of ester functional groups, the detergent system is greatly influenced by pH, and the hydrolysis of the hydrogenated castor oil can be caused when the pH value is lower or higher, so that the three-dimensional structure of the hydrogenated castor oil in the system is damaged, and the suspension performance is reduced; more importantly, when the liquid detergent contains lipase, the lipase can cause hydrolysis of a unique ester group structure in the hydrogenated castor oil, so that a rheological structure collapses, and the stability of the liquid detergent is reduced; in addition, the hydrogenated castor oil has a low melting point, and thus tends to cause heat reversion under high temperature conditions.
Disclosure of Invention
Based on the above, there is a need for a liquid detergent composition, which can solve the problems of narrow pH application range of hydrogenated castor oil, and rheological structure collapse and heat thickening caused by hydrolysis with lipase, so that the liquid detergent composition has a good rheological yield stress, and has a stable suspension effect on suspended matters such as microcapsule essence, capsule particles, oil emulsion and particle size solid.
A liquid detergent composition comprising an organic polyamide wax having the structure:
wherein R is H or COOH;
a is C4-C18 straight chain or branched chain alkylene, C4-C18 straight chain or branched chain monoalkenylene, C6-C18 straight chain or branched chain dialkene, C6-C18 aromatic alkylene, C4-C18 monohydroxy alkylene or C4-C18 polyhydroxy alkylene;
b is C2-C12 straight chain or branched chain alkylene, C6-C12 alicyclic alkylene, C6-C16 aromatic alkylene, polyethoxy alkylene, polypropoxy alkylene or polyethoxy propoxy alkylene;
m is an integer of 1-10, and the weight average molecular weight of the organic polyamide wax is 300-5000.
In one embodiment, A is a C8-C12 straight or branched chain hydrocarbylene group or a C15-C18 monohydroxy hydrocarbylene group;
b is C6-C8 alicyclic alkylene or C6-C8 aromatic alkylene.
In one embodiment, the weight average molecular weight of the organic polyamide wax is 500-4000.
In one embodiment, the weight average molecular weight of the organic polyamide wax is 500-2500.
In one embodiment, the liquid detergent composition comprises water and the following raw material components in percentage by weight:
(a)0.1 to 5.0% of the organic polyamide wax;
(b)5.0 to 40.0 percent of surfactant;
(c)0 to 5.0 percent of suspended matter; the density of the suspended matter is 0.5-1.5 g/cm3One or more of microcapsule particles with the particle size of 10 nm-5 mm, grease microemulsion and particle size solid suspension.
In one embodiment, the liquid detergent composition comprises water and the following raw material components in percentage by weight:
(a)0.2 to 2.0% of the organic polyamide wax;
(b)10.0 to 30.0 percent of surfactant;
(c)0.01 to 3.0 percent of suspended matters; the density of the suspended matter is 0.5-1.5 g/cm3One or more of microcapsule particles with the particle size of 10 nm-5 mm, grease microemulsion and particle size solid suspension.
The addition of the suspension to the composition enables stable suspension in the liquid detergent composition. In one embodiment, the suspension is present in an amount of 0.1% to 3.0% by weight, and in a further embodiment, the suspension is present in an amount of 0.2% to 3.0% by weight.
In one embodiment, the organic polyamide wax is first dissolved with an organic solvent at a temperature above 90 ℃.
In one embodiment, the temperature of the heated dissolution is greater than 90 ℃.
In one embodiment, the organic solvent is any one or more of a free fatty acid with a boiling point higher than 100 ℃, a nonionic surfactant and an alcohol ether solvent.
In one embodiment, the organic solvent is oleic acid, palmitoleic acid, linoleic acid, linolenic acid, coconut oil fatty acid, arachidonic acid, fatty alcohol polyoxyethylene (7) ether, fatty alcohol polyoxyethylene (9) ether, isomeric octanol (C8) polyoxyethylene ether, isomeric octanol (C8) polyoxypropylene ether, isomeric octanol (C8) polyoxyethylene polyoxypropylene ether, isomeric octanoic acid (C8) polyoxyethylene ester, isomeric octanoic acid (C8) polyoxypropylene ester, isomeric octanoic acid (C8) polyoxyethylene polyoxypropylene ester, isomeric decanol (C10) polyoxyethylene ether, isomeric decanol (C10) polyoxypropylene ether, isomeric decanol (C10) polyoxyethylene polyoxypropylene ether, isomeric decanoic acid (C10) polyoxyethylene ester, isomeric decanoic acid (C10) polyoxypropylene ether, isomeric decanoic acid (C10) polyoxyethylene ester, isomeric dodecanoic acid (C12) polyoxyethylene ester, isomeric decanoic acid (C12) polyoxyethylene ester, oleic acid, linoleic acid, linolenic acid, coconut oil fatty acid, arachidonic acid, fatty acid (C8) polyoxyethylene ester, oleic acid, oleic, The polyoxyethylene lauryl ether is one or more of isomeric lauric acid (C12) polyoxypropylene ester, isomeric lauric acid (C12) polyoxyethylene polyoxypropylene ester, isomeric tridecanol (C13) polyoxyethylene ether, isomeric tridecanol (C13) polyoxypropylene ether, isomeric tridecanol (C13) polyoxyethylene polyoxypropylene ether, isomeric stearyl alcohol (C16-18) polyoxyethylene ether, isomeric stearyl alcohol (C16-18) polyoxypropylene ether, diethylene glycol monobutyl ether, polyethylene glycol monobutyl ether and the like.
In one embodiment, the mass ratio of the organic polyamide wax to the organic solvent is 2: 1-1: 20.
in one embodiment, the mass ratio of the organic polyamide wax to the organic solvent is 1: 10-1: 16.
in one embodiment, the surfactant comprises, in percent by weight based on the total weight of the feedstock components: 5.0 to 30.0 percent of nonionic surfactant, 10.0 to 40.0 percent of anionic surfactant, 0.1 to 5.0 percent of fatty acid and 0 to 30.0 percent of amphoteric surfactant.
In one embodiment, the liquid detergent composition further comprises 0.1% to 10.0% of an adjunct; the auxiliary agent is any one or a combination of more of an alkaline agent, a cosolvent, an enzyme preparation, a pH stabilizer, a viscosity regulator, a preservative, a coloring agent, essence, a fluorescent whitening agent and a color stabilizer.
In one embodiment, the liquid detergent composition has a yield stress of 0.1 to 2.0Pa at a temperature range of 0 to 45 ℃.
The invention also provides a preparation method of the liquid detergent composition, which comprises the following steps:
(1) mixing the surfactant and water, dissolving, heating to 60-90 ℃, and preserving heat;
(2) and (2) heating and dissolving the organic polyamide wax and an organic solvent, and adding the organic polyamide wax and the organic solvent into the solution obtained in the step (1).
(3) After cooling to room temperature, the remaining water and the suspension are added to the solution obtained in step (2).
In one embodiment, after the organic polyamide wax and the organic solvent are added, the temperature is reduced to 20-40 ℃, and the auxiliary agent is added.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a liquid detergent composition, which adopts organic polyamide wax as a rheological agent of the liquid detergent composition, wherein the organic polyamide wax exists in a molecular structure as an amide group, and the specific amide group forms intermolecular hydrogen bonds, so that a three-dimensional network structure is constructed to enable fluid to generate certain thixotropy; when the three-dimensional network structure is subjected to shear force, the thixotropic structure of the system is damaged, and the viscosity of the fluid is reduced; when the shearing force disappears and hydrogen bonds are formed again, the viscosity of the fluid is rapidly increased and the rheological yield stress is generated, so that the problem that the rheological structure of the system collapses because the ester group in the hydrogenated castor oil structure is degraded under a lipase-containing system or a system with a lower or higher pH value can be effectively solved, the system is ensured to have proper rheological yield stress, and the suspended matters required in the system can be stably suspended. Meanwhile, the melting point of the organic polyamide wax micro powder is relatively high, and the problem of system hot coarsening is solved to a certain extent.
Detailed Description
The liquid detergent composition and the process for producing the same according to the present invention will be described in further detail with reference to the following examples.
All percentages, parts and ratios are based on the total weight of the composition of the present invention, unless otherwise specified. All weights as they pertain to listed ingredients are assigned to levels of active material and, therefore, do not include solvents or by-products that may be included in commercially available materials, unless otherwise specified. The term "weight content" herein may be expressed in accordance with "%".
All formulations and tests herein occur at 25 ℃ environment, unless otherwise indicated.
As used herein, "comprising," "including," "containing," "having," or other variations thereof, is intended to encompass non-inclusive inclusions such that no distinction is made between terms, and the term "comprising" means that other steps or ingredients can be added that do not affect the end result. The term "comprising" also includes the terms "consisting of …" and "consisting essentially of …". The compositions and methods/processes of the present invention can comprise, consist of, and consist essentially of the essential elements and limitations described herein, as well as any of the additional or optional ingredients, compositions, steps, or limitations described herein.
The terms "composition", "detergent composition" and "liquid detergent composition" are used herein in the same sense and are interchangeable.
Polyamide wax micropowder
The polyamide wax is prepared by the polymerization, dehydration and other reactions of organic acid and organic amine substances. According to different product forms, the wax can be divided into micro powder wax and activated wax slurry. The polyamide wax micropowder is prepared by directly pulverizing solid polyamide wax or atomizing and cooling molten liquid polyamide wax, and the particle size of the polyamide wax micropowder is generally required to be less than 50 micrometers. The polyamide wax micropowder is beneficial to large-batch and long-distance transportation, and the transportation cost is saved; most of the unactivated polyamide wax micro powder is agglomerated and intertwined molecular beams, so that a developed three-dimensional net structure cannot be formed, and activated polyamide molecules (generally activated by an organic solvent) can be fully dispersed into molecular individuals with uniform distribution and a straight chain state. According to the invention, the polyamide wax is applied to a detergent composition, a three-dimensional network structure is formed through intermolecular hydrogen bond action, so that a system generates certain thixotropy, and when the three-dimensional network structure is subjected to shearing force, the thixotropic structure of the system is destroyed, and the fluid viscosity is reduced; when the shearing force disappears, hydrogen bonds are formed again, the viscosity of the fluid is rapidly increased, the traditional hydrogenated castor oil can be replaced, good rheological yield stress of the system is realized, and suspended matters are stably suspended.
Organic solvent
The organic solvent in this patent is preferably a free fatty acid, a non-ionic surfactant or an alcohol ether based solvent, or a mixture thereof. Mainly used as a medium to dissolve the rheological agent organic polyamide wax micropowder at high temperature so as to more uniformly disperse the rheological agent organic polyamide wax micropowder in the liquid detergent; since the melting point of the organic polyamide wax micropowder is generally above 100 ℃, the boiling point of the non-aqueous organic solvent is preferably higher than 90 ℃ to avoid the occurrence of a large amount of volatilization or bumping of the non-aqueous organic solvent in the dissolving process. The free fatty acids may be linear saturated fatty acids, or unsaturated fatty acids, or mixtures thereof; such as: lauric acid, oleic acid, linoleic acid, linolenic acid, ricinoleic acid, soybean oleic acid, peanut oleic acid, hydrogenated coconut oleic acid, palmitic acid, and the like. The nonionic surfactant is preferably a polyethylene glycol modified hydrogenated castor oil, or contains a fatty alcohol alkoxylate having the general formula:
wherein n is 6 to 24; x is 2 to 30 and y is 0 to 10. Such as: CO-20, CO-40, AEO-7, AEO-9, XL-70, XL-80, XL-90, XP-80, and the like. The alcohol ether organic solvent is preferably ethylene glycol, propylene glycol, glycerin, butyl ether, ethylene glycol dimethyl ether, ethylene glycol butyl ether, propylene glycol methyl ether, 3-methoxy-3-methyl-1-butanol, etc.
Yield stress
Yield stress means that the composition exhibits a solid-like, relatively static behavior when the external force is less than a certain threshold value, and a liquid-like, fluid-like behavior when the external force is greater than a certain threshold value, which is the yield stress of the composition. The yield stress of the composition is obtained by fitting calculation through a Herschel ━ Bulkley method by using a rheometer, the yield stress range is 0.1-2.0 Pa within the temperature range of 25-45 ℃, the composition with a certain yield stress can stably suspend suspended matters in a system, and the phenomena of layering, suspended matter sedimentation or downward suspension of the system can be avoided.
Suspension stability
The suspension stability refers to that after the composition is stored for a certain time under certain conditions, suspended matters keep a suspended state in a matrix, the phenomenon of sinking or floating does not occur, and the phenomenon of obvious layering, sedimentation or flocculation does not occur in the appearance of the composition. The suspension stability referred to in the present invention can be evaluated by high temperature, low temperature, normal temperature and freeze-thaw cycling storage suspension stability tests.
Storage stability test
Under the conditions of long-time storage at high temperature or low temperature and continuous and violent change of storage temperature, the phenomena of phase separation, delamination, precipitation, suspended particles and the like of surfactants, fatty acids, auxiliary agents, salts and the like in the composition are generated, even unpredictable chemical changes are generated, so that the composition cannot recover the original state even if the composition is recovered to room temperature for storage, and the phenomenon of instability of the composition due to different storage conditions is generated. The storage stability test related by the invention comprises high-temperature stability, low-temperature stability, freeze-thaw cycle stability and normal-temperature stability.
Liquid detergent composition
The liquid detergent composition of the present invention is a fabric detergent composition which is contacted with a fabric in water to remove stains from the surface of a substrate, thereby cleaning the surface of the fabric. The liquid detergent compositions typically also include a surfactant system and other conventional detergency builders such as pH adjusters, viscosity modifiers, enzyme preparations and the like.
Surfactant system
The present invention relates to surfactant systems for liquid detergent compositions including, but not limited to: one of anionic surfactant, nonionic surfactant, zwitterionic surfactant and their mixture. Preferred surfactant systems comprise a mixture of anionic and nonionic surfactants.
Anionic surfactants
The content of the anionic surfactant is 1.0-40.0% of the total weight of the composition.
The anionic surfactant is selected from one or more of sulfonate surfactant, carboxylate surfactant and sulfate surfactant. Preferably sodium linear alkyl benzene sulfonate containing ethoxylated fatty alcohol sulfate, wherein the alkyl contains 11-14 carbon atoms, alpha-olefin sulfonate, fatty acid alkyl ester sulfonate; ethoxylated fatty alcohol ether carboxylates; one or more of C8-C18 alkyl sulfate and C8-C18 ethoxylated fatty alcohol sulfate.
In some embodiments, the mixture of anionic surfactants preferably contains alkyl benzene sulfonates and derivatives thereof. The alkylbenzene sulfonate satisfies the following general formula:
wherein R is1Is an alkyl group having 6 to 24 carbon atoms, M+Is a cation. R1Is a linear or branched, saturated or alkyl group containing one or more unsaturated double bonds, preferably a linear alkyl group having a carbon number of 8 to 18.
In some embodiments, the mixture of anionic surfactants contains ethoxylated fatty alcohol sulfates. Ethoxylated fatty alcohol sulfates are derivatives of ethoxylated fatty alcohols having the general formula:
wherein R is2Is an alkyl group having 6 to 24 carbon atoms; x is 1 to 30; wherein M is+Is a cation. R2Is a linear or branched, saturated or alkyl group containing one or more unsaturated double bonds, preferably a linear alkyl group having a carbon number of 8 to 18. X represents an average degree of ethoxylation of from 1 to 30, preferably from 1 to 10, more preferably from 1 to 3.
In some embodiments, the anionic surfactant mixture comprises an alpha olefin sulfonate having the general formula:
wherein y is 0 to 2, R3Is an alkyl group having 6 to 24 carbon atoms, preferably an alkyl group having 8 to 18 carbon atoms.
The anionic surfactant may further comprise fatty acid alkyl ester sulfate, preferably fatty acid Methyl Ester Sulfate (MES), and the carbon number of the fatty acid is preferably 8 to 18. Sulfosuccinates, preferably fatty alcohol polyoxyethylene ether-based succinic acid monoester disodium salt, preferably having a fatty alcohol carbon number of from 8 to 18, and an average degree of ethoxylation of preferably 2.0, may also be included.
In some embodiments, the anionic surfactant mixture comprises a fatty acid salt. The fatty acid salt is an organic matter containing a carboxyl and an aliphatic hydrocarbon chain and is formed by alkaline saponification of fatty acid. The alkaline agent usually used is sodium hydroxide and/or potassium hydroxide. The fatty acid salt is a combination of a saturated fatty acid salt and an unsaturated fatty acid salt. The saturated fatty acid salt is fatty acid salt without carbon-carbon double bond, such as caprylate, caprate, laurate, myristate, palmitate, stearate, arachinate, etc.; the unsaturated fatty acid salt is fatty acid salt containing one or more carbon-carbon double bonds, wherein the unsaturated fatty acid salt containing one carbon-carbon double bond is oleate, and the unsaturated fatty acid salts containing a plurality of carbon-carbon double bonds are linoleate, linolenate, arachidonic acid salt and the like.
The cation of the above-mentioned anionic surfactant may be an alkali metal ion or an alkaline earth metal ion, and preferably a sodium ion.
Nonionic surfactant
The nonionic surfactant is selected from one or more of fatty alcohol alkoxylates, fatty acid methyl ester ethoxylates, alkyl polyglycosides, fatty acid alkylolamides, and ethoxylated sorbitan esters.
In some embodiments, the nonionic surfactant mixture preferably contains a fatty alcohol alkoxylate having the general formula:
wherein n is 6 to 24; x is 2 to 30 and y is 0 to 10.
The fatty alcohol alkoxylate is a product of ring opening polymerization of fatty alcohol and alkylene oxide under the action of an alkaline catalyst, and is basically a mixture. The fatty alcohol includes a straight chain alcohol or a branched chain isomeric alcohol. Alkoxy groups include ethoxy and propoxy groups. The fatty alcohol is preferably a fatty alcohol having a carbon number of 8 to 18, and the preferred alcohols include, but are not limited to, one of hexanol, octanol, decanol, 2-ethylhexanol, 3-propylheptanol, lauryl alcohol, isotridecyl alcohol, tridecyl alcohol, tetradecyl alcohol, cetyl alcohol, palmitoleyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, linoleyl alcohol, linolenyl alcohol, and mixtures thereof. The average degree of ethoxylation x is preferably from 2 to 12. Preferred examples are the NEODOL series of linear fatty alcohol ethoxylates products from SHELL, the ECOSURF EH series of ethoxylated and propoxylated 2-ethylhexanols products from DOW, the Lutensol XL series of ethoxylated and propoxylated 3-propylheptanols products from BASF and the Lutensol XP series of ethoxylated 3-propylheptanols products from BASF.
Other surfactants
The surfactant system to which the present invention relates may comprise other surfactants selected from: 0.01-30.0% of zwitterionic surfactant, 0.01-30.0% of cationic surfactant and 0.01-30.0% of gemini surfactant.
The zwitterionic surfactant comprises a betaine surfactant, an imidazoline surfactant, an amino acid surfactant and an amine oxide surfactant; including but not limited to: alkyl betaines, fatty amidobetaines, fatty amidopropyl betaines, fatty amidopropyl hydroxypropyl sulfobetaines, including sodium alkyl acetate type imidazolines, fatty acid type imidazolines, sulfonic acid type imidazolines; aminopropionic acid derivatives, glycine derivatives; alkyl dimethyl amine oxide, fatty amidopropyl dimethyl amine oxide, and the like.
The cationic surfactant comprises quaternary ammonium salt surfactant, heterocyclic surfactant and polymer cationic surfactant. The cationic surfactant may include: mono-long linear quaternary ammonium salts, bi-long linear quaternary ammonium salts, benzyl quaternary ammonium salts, hydroxyalkyl quaternary ammonium salts, fatty amidopropyl hydroxyalkyl quaternary ammonium salts, and polyquaternary ammonium salts obtained by copolymerizing vinyl pyrrolidone and an unsaturated amide or unsaturated quaternary ammonium salt.
The gemini surfactant refers to a surfactant formed by linking two or more identical or nearly identical surfactant monomers together through chemical bonds, wherein the amphiphilic components are linked together by a linking group at or near a hydrophilic head group. The Gemini surfactant comprises anionic Gemini surfactants such as sulfate type surfactant, sulfonate type surfactant, phosphate type surfactant and carboxylate type surfactant, and also comprises cationic Gemini surfactant and nonionic Gemini surfactant.
Washing assistant
The detergent composition according to the present invention may comprise a washing aid selected from the group consisting of an enzyme preparation, a bleaching system, an anti-redeposition agent and a colour stabilizer.
Anti-redeposition agent
The detergent composition of the present invention may contain an antiredeposition agent from the viewpoint of effectively improving the washing effect. The anti-redeposition agent includes, but is not limited to, the group consisting of: cellulose derivatives, such as carboxymethyl cellulose, ethyl hydroxyethyl cellulose, methyl cellulose; homopolymers and copolymers of vinylpyrrolidone, for example linear polyvinylpyrrolidone, copolymers of vinylpyrrolidone and vinyl acetate, copolymers of vinylpyrrolidone and vinylimidazole. The antiredeposition agent is present in the detergent composition at a level of from 0.01% to 5.0%, preferably from 0.01% to 2.0%.
Fluorescent whitening agent
The use of optical brighteners in liquid detergent compositions is well known in the art and commercially available optical brighteners are abundant. Optical brighteners are present in the form of their alkali metal salts (mostly sodium salts). Preferred optical brighteners include, but are not limited to: distyrylbiphenyl compounds. A suitable example is 4, 4' -bis (2-sodium sulfonate styryl) biphenyl, such as the product of the BASF company under the CBS-X brand. The fluorescent whitening agents are used in amounts of 0.01% to 2.0% by weight, preferably 0.01% to 0.1% of the total composition.
The present invention relates to liquid detergent compositions wherein the fluorescent whitening agent is present in the liquid detergent composition in an amount of from 0.01 to 2.0% by weight, preferably from 0.05 to 1.0% by weight, more preferably from 0.05 to 0.5% by weight.
Enzyme preparation
The detergent compositions to which the present invention relates may comprise one or more enzyme preparations to provide cleaning performance, fabric care and/or other benefits. The enzyme preparation is selected from any one or combination of several of the following enzymes: protease, alpha-amylase, cellulase, hemicellulase, phospholipase, lipase, peroxidase/oxidase, pectinase, mannanase, cutinase, xylanase, pullulanase, pentosanase, maltosanase, arabinase and beta-glucanase. Commonly used enzyme preparations are proteases, amylases, lipases, cutinases and/or cellulases. The enzyme preparation is present at a level of from 0.001% to 5.0%, preferably from 0.01% to 2.0% of the detergent composition.
The detergent composition of the present invention may comprise: an enzyme stabilizing system in an amount of 0.001% to 10.0% by weight of the composition. The enzyme stabilizing system is compatible with detergent compositions and may comprise one or a mixture of more of calcium ions, boric acid, borax, propylene glycol, glycerol, polyols. The weight and amount of the enzyme stabilizing system will vary depending on the form and composition of the detergent composition and the type of enzyme preparation.
Bleaching system
The detergent compositions to which the present invention relates may comprise a bleach system. The bleaching system comprises hypohalite bleach, peroxide bleach. Peroxides typically comprise a source of hydrogen peroxide and a bleach activation system. Sources of hydrogen peroxide include, but are not limited to, perborates, percarbonates, persulfates, and mixtures thereof. In some embodiments, the preferred hydrogen peroxide source is sodium percarbonate. The bleaching system may comprise a bleach activator for promoting rapid decomposition of peroxide at lower temperatures to generate oxygen selected from the group consisting of: tetraacetylethylenediamine, benzoylcaprolactam, 4-nitrobenzoylcaprolactam, 3-chlorobenzoylcaprolactam, benzoyloxybenzenesulfonate, nonanoyloxybenzenesulfonate, phenyl benzoate, decanoyloxybenzenesulfonate, benzoylvalerolactam, octanoyloxybenzenesulfonate, transition metal bleach catalysts.
The detergent composition of the present invention may further comprise a reactive oxygen species stabilizer for adjusting the rate of hydrogen peroxide generation by peroxide decomposition so as not to excessively increase the local concentration of hydrogen peroxide, and examples thereof include polyfunctional organic phosphoric acids such as hydroxyethylidene diphosphate and ethylenediaminetermethylene phosphate. In some embodiments, the bleaching system is present at a level of from 0.01% to 30.0%, preferably from 0.01% to 20.0%, more preferably from 0.01% to 10.0% by weight of the total detergent composition.
Optional ingredients
The detergent compositions to which the present invention relates comprise the following optional additives: one or more of an alkaline agent, a viscosity modifier, a preservative, a colorant and a color stabilizer.
The detergent composition according to the present invention may comprise one or more alkaline agents selected from the group consisting of sodium hydroxide, potassium hydroxide, alkali metal carbonates, alkali metal silicates.
The detergent compositions to which the present invention relates may comprise one or more viscosity modifiers to provide suitable viscosity. Suitable viscosity modifiers are, for example, polysaccharides, gums, short-chain fatty alcohols, short-chain fatty alcohol alkyl ethers. Such as ethanol, propylene glycol, alkyl hydroxyalkyl cellulose ether, carrageenan, xanthan gum, polyacrylamide derivatives, etc.
In some embodiments, the detergent compositions contemplated by the present invention preferably comprise preservatives, such as phenoxyl alcohols, sodium benzoate; isothiazolinone and its derivatives, such as methyl isothiazolinone, methyl chloro isothiazolinone, benzisothiazolinone or their mixture. The amount of the preservative is 0.001% to 5.0%, preferably 0.01% to 2.0%.
In some embodiments, the detergent compositions of the present invention comprise a colorant comprising a dye and a pigment. The coloring agents include all coloring agents used in detergent products such as acid scarlet G, basic fuchsin, acid golden yellow G, acid bright yellow G, basic egg yolk, direct fast blue B2RL, indigo, and the like. In some embodiments, the detergent compositions of the present invention comprise a color stabilizer. Color stabilizers include all color stabilizers that can be used in laundry products.
In addition to the optional ingredients described above, the detergent compositions of the present invention may also comprise: various common and conventional additives such as solubilizers, foam boosters, suds suppressors, fabric softeners, anti-wrinkle agents, and the like. These additives and the associated methods of use are well known to those skilled in the art, and the particular type and amount of such additives can be selected and adjusted to the particular needs.
Application method
The detergent compositions of the present invention are useful in a manner well known to those skilled in the art, and typically are used by contacting the particular detergent composition embodiment with the surface of the item to be laundered, either undiluted or diluted in water, and then rinsing the surface of the item to be laundered.
Without further elaboration, it is believed that one skilled in the art can, using the preceding description, utilize the present invention to its fullest extent. The following examples are intended to further describe and demonstrate embodiments within the scope of the present invention. The examples are therefore to be understood as merely illustrative of the invention in more detail and not as limiting the content of the invention in any way.
In the following examples, all amounts are by weight unless otherwise indicated, and the amounts of the listed ingredients are converted to active material amounts.
In the examples, the following abbreviations will be used and have the indicated functions.
Sodium hydroxide: the neutralized fatty acid is saponified to prepare fatty acid salt and/or neutralized sulfonic acid to prepare LAS, alkali agent.
AES: the ethoxylated fatty alcohol sulfate contains 12-14 carbon atoms of a fatty alcohol chain and 2 average ethoxylation degrees, and is an anionic surfactant.
AEO-9: ethoxylated fatty alcohol with average ethoxylation degree of 9 and boiling point over 375 deg.c.
XL-80: ethoxylated fatty alcohols, branched nonionic surfactants.
ECO-20: polyoxyethylene hydrogenated castor oil, average degree of ethoxylation of 20, boiling point > 268 ℃, nonionic surfactant.
ECO-36: polyoxyethylene hydrogenated castor oil, average degree of ethoxylation of 36, boiling point > 268 ℃, nonionic surfactant.
Polyamide wax micropowder: the general formula is as follows:
Rec A：R＝H，
the weight average molecular weight is 700, and m is 1;
Rec B：R＝COOH，A＝(CH2)10；
the weight average molecular weight is 2150, and m is 6;
Rec C：R＝COOH，
B＝(CH2)6(ii) a The weight average molecular weight is 8100, and m is 19;
Rec D：R＝COOH，A＝(CH2)2，B＝(CH2)2(ii) a The weight average molecular weight was 500, and m was 3.
Hydrogenated castor oil: obtained by hydrogenation of castor oil, the main component of which is glycerol dodecahydroxystearate.
Lipex: lipase, which can hydrolyze ester-based materials, such as hydrogenated castor oil.
Protease enzyme: proteases, which hydrolyze proteins containing specific "peptide bond" structures.
Fragrance CAPS: the microcapsule essence is a micro container made of natural or synthetic high molecular materials, the liquid drop essence is completely encapsulated in the micro container to form the microcapsule essence, and the density is generally 0.8-1.2 g/cm3The size is 1-1000 μm; the efficacy substance for keeping the lasting fragrance of the fabric.
And SE: silicone Emulsion, Silicone oil Emulsion, density 0.95-1.05 g/cm3The size is 1 mu m-1 mm; the flexibility of the fabric can be effectively improved in the washing process.
CSP: colored Solid Particles with a density of 1.2-1.5 g/cm3The size of the detergent is 0.5-5.0 mm, and the detergent can play a decorative effect in washing products.
A method of making a liquid detergent composition in an embodiment of the invention comprises the steps of:
1) adding a part of deionized water and an alkaline agent into the preparation tank;
2) starting stirring, heating to 50-80 ℃, heating and saponifying fatty acid into fatty acid salt under an alkaline condition, and stirring until the fatty acid salt is completely dissolved;
3) sequentially adding an anionic surfactant, a nonionic surfactant and an amphoteric surfactant, stirring until the anionic surfactant, the nonionic surfactant and the amphoteric surfactant are completely dissolved, heating to 60-90 ℃, and keeping the temperature;
4) under the condition of preheating, dissolving the organic polyamide wax micropowder in a nonionic surfactant with a partial boiling point higher than 90 ℃ until the organic polyamide wax micropowder is completely dissolved;
5) slowly adding the organic polyamide nonionic surfactant solution in the pre-pot into a heat-insulating preparation tank under the dispersion of a dispersion disc;
6) slowly cooling to 20-40 ℃ under the condition of dispersion of a dispersion disc, adjusting the pH value of a system by using a pH regulator, and keeping the uniformity of liquid in a preparation tank;
7) finally, adding essence, enzyme preparation, preservative and other additives into the system, and stirring until the system is a uniform system.
Rheological yield stress test
The rheological property of the detergent composition is tested by an Antopa MCR-302 type rheometer, the testing temperature is 25-45 ℃, and the shear rate range is 0.1-100s-1By Herschel-Bulkley, y ═ a + b.xpThe equation is fitted to calculate the yield stress of the composition, and the correction Ratio (R2) is required to be more than 0.99 when the equation is fitted.
Storage stability test
High-temperature stability: after the composition is bottled and sealed, the composition is placed in an environment with the temperature of 45 +/-1 ℃, and after the composition is placed at a constant temperature for 1 month, the temperature is restored to 25 +/-5 ℃ at room temperature, the composition does not delaminate or precipitate, and the high-temperature stability is qualified.
Low-temperature stability: the composition is bottled, sealed, placed in an environment of-0 + -2 deg.C, placed at constant temperature for 1 month, taken out and immediately observed. The composition has no demixing or precipitation separation, and is qualified in low-temperature stability.
Freeze-thaw cycle stability: placing the mixture in an environment with the temperature of between 15 ℃ below zero and 25 ℃ below zero, placing the mixture for 24 hours at constant temperature, taking the mixture out, placing the mixture in an environment with the temperature of between 25 ℃ below zero and 5 ℃ for 24 hours, circulating the mixture for five times continuously, and observing the state of the composition each time. The composition has no demixing or precipitation, and the freeze-thaw cycle stability is qualified.
High and low temperature cycle stability: placing the mixture in an environment with the temperature of between 15 ℃ below zero and 25 ℃ below zero, placing the mixture for 24 hours at constant temperature, taking the mixture out, placing the mixture in an environment with the temperature of 45 +/-5 ℃ at room temperature for 24 hours, circulating for five times continuously, and observing the state of the composition each time. The composition has no demixing or precipitation, and the freeze-thaw cycle stability is qualified.
And (3) normal temperature stability: after the composition is bottled and sealed, the composition is placed in a room temperature environment, and after the composition is placed for 1 month, the composition has no layering or precipitation, and is qualified in stability at normal temperature.
Examples 1-2 comparative examples 1-3 compositions A-E were prepared as shown in Table 1.
Table 1 liquid detergent compositions having yield stress
The results in table 1 show that compositions a and B have very good rheological yield stress stability in the presence of lipase for the organic polyamide wax micropowder compared to comparative composition C containing a hydrogenated castor oil rheology. Although composition C initially formulated had a higher rheological yield stress, the lipase gradually hydrolyzed the hydrogenated castor oil as the shelf life was extended, so that after one month of shelf life, the hydrogenated castor oil rheology collapsed the thixotropic structure formed in the system, the rheological yield stress of the composition decreased substantially, and there was essentially no yield stress anymore. Further, in comparative example compositions D and E, when the molecular weight of the polyamide wax is too large or the molecular chain length of the dibasic acid is too short, the rheological yield stress of the system substantially disappears as compared with example compositions a and B.
Compositions F to J of examples 3 to 5 and comparative examples 4 and 5 were prepared as shown in Table 2.
Table 2 liquid detergent compositions with rheological yield stress
Table 2 shows the ratio of the rheological agent organic polyamide wax powder to the non-aqueous organic solvent, and the effect on the rheological yield stress of the system in the presence of lipase. In compositions F and G, whether lipase is added into the system has no influence on the retention of the rheological yield stress of the composition, and the fact that organic polyamide wax micropowder used as a rheological agent in the composition can coexist with the lipase is proved again. Meanwhile, when the ratio of the rheological agent organic polyamide wax micro powder to the organic solvent (ECO-36) is increased to 5:1 or reduced to 1:60, the organic polyamide wax micro powder cannot be uniformly dispersed in the system, and cannot form a three-dimensional network structure required by a thixotropic system, so that the rheological yield stress of the compositions I and J is greatly reduced.
Compositions K to O of examples 6 to 8 and comparative examples 6 to 7 were prepared as shown in Table 3.
The reason why the contents of the comparative examples in Table 3 are inconsistent with those of the alkaline agent sodium hydroxide in the examples is that the contents of lauric acid, oleic acid and sulfonic acid to be neutralized are different, the content of organic acid in composition N is low, the amount of sodium hydroxide to be neutralized is low, the content of organic acid in composition O is high, and the amount of sodium hydroxide is high.
Table 3 liquid detergent compositions with rheological yield stress
Table 3 tests the difference in rheological yield stress developed by the rheology agent organic polyamide wax micropowder in the system at different surfactant levels in the composition. In the compositions N and O, the content of the total surfactant is about 4.65 percent and 54.25 percent respectively, and when 0.3 percent of the rheological agent, namely the organic polyamide wax micro powder RecA is added, the corresponding system basically does not have rheological yield stress; whereas in compositions K, L and M of examples 6-8, the total surfactant content was about 15.5%, 19.5%, and 21.5%, respectively, the rheological yield stress at 25 ℃ for each system was as high as 1.12, 1.08, and 0.99. At relatively low total surfactant levels, the rheological agent, organic polyamide wax micropowder, is not effectively uniformly dispersed in the composition; at a relatively high total surfactant content, the water content is too low, the rheological agent cannot be well dispersed in the composition, the agglomeration is serious, the rheological structure is damaged, and the rheological yield stress of the system is greatly reduced or even disappears.
Table 4 selects representative compositions A, F and J of the above comparison for suspension stability testing of different mass contents of microcapsule essence, silicone oil emulsion and colored solid particles, and the results are as follows:
table 4 stability of liquid detergent compositions on suspensions
The above examples prove that the invention adopts a simple and effective method to effectively and uniformly disperse the rheological agent organic polyamide wax micropowder in the liquid detergent to form a thixotropic structure, and the system generates a certain rheological yield stress to satisfy the stable suspension of the composition to suspended matters; the problem that the rheological structure of the traditional hydrogenated castor oil rheological agent collapses due to hydrolysis in the presence of lipase is solved, and the stable suspension effect of the liquid detergent on particle suspended matters such as microcapsule essence, lipase, cellulase and protease is provided.
The dimensions and values disclosed herein are not to be understood as being strictly limited to the exact numerical values recited. Unless otherwise stated, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as "40 mm" is intended to mean "about 40 mm".
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (12)
1. The liquid detergent composition is characterized by comprising the following raw material components in percentage by weight:
(a) 0.2% to 2% of said organic polyamide wax;
(b) 10-30% of surfactant;
(c)0.01 to 3 percent of suspended matters; the suspended matter is selected from the suspended matters with the density of 0.5-1.5 g/cm3One or a plurality of combinations of microcapsule particles with the particle size of 10 nm-5 mm, grease microemulsion and particle size solid suspended matter;
the organic polyamide wax has the following structure:
wherein R is H or COOH;
a is C4-C18 straight chain or branched chain alkylene, C4-C18 straight chain or branched chain monoalkenylene, C6-C18 straight chain or branched chain dialkene, C6-C18 aromatic alkylene, C4-C18 monohydroxy alkylene or C4-C18 polyhydroxy alkylene;
b is C6-C12 alicyclic alkylene or C6-C16 aromatic alkylene;
m is an integer of 1-10, and the weight average molecular weight of the organic polyamide wax is 300-5000.
2. The liquid detergent composition of claim 1, wherein a is a C8-C12 linear or branched alkylene group or a C15-C18 monohydroxy alkylene group;
b is C6-C8 alicyclic alkylene or C6-C8 aromatic alkylene.
3. The liquid detergent composition according to claim 1, wherein the organic polyamide wax has a weight average molecular weight of 500 to 4000.
4. A liquid detergent composition according to claim 1 wherein the organic polyamide wax is first dissolved with an organic solvent at a temperature above 90 ℃.
5. The liquid detergent composition according to claim 4, wherein the organic solvent is any one or more of a free fatty acid having a boiling point higher than 100 ℃, a nonionic surfactant and an alcohol ether solvent.
6. The liquid detergent composition according to claim 4, wherein the mass ratio of the organic polyamide wax to the organic solvent is 2: 1-1: 20.
7. the liquid detergent composition according to claim 6, wherein the mass ratio of the organic polyamide wax to the organic solvent is 1: 10-1: 16.
8. the liquid detergent composition according to claim 1, wherein the surfactant comprises, in terms of the total weight percentage of the raw material components: 5 to 30 percent of nonionic surfactant, 10 to 40 percent of anionic surfactant and 0 to 30 percent of amphoteric surfactant.
9. The liquid detergent composition according to claim 1, further comprising 0.1% to 10% of an adjunct; the auxiliary agent is any one or a combination of more of an alkaline agent, a cosolvent, an enzyme preparation, a pH stabilizer, a viscosity regulator, a preservative, a coloring agent, essence, a fluorescent whitening agent and a color stabilizer.
10. The liquid detergent composition according to any one of claims 1 to 9, wherein the liquid detergent composition has a yield stress of 0.1 to 2Pa in a temperature range of 0 to 45 ℃.
11. A process for producing a liquid detergent composition according to any one of claims 1 to 10, comprising the steps of:
(1) mixing the surfactant and water, dissolving, heating to 60-90 ℃, and preserving heat;
(2) heating and dissolving the organic polyamide wax and an organic solvent, and adding the organic polyamide wax and the organic solvent into the heat-insulating solution obtained in the step (1);
(3) after cooling to room temperature, the remaining water and the suspension are added to the solution obtained in step (2).
12. The method for preparing a liquid detergent composition according to claim 11, wherein the addition of the auxiliary agent is performed after the addition of the organic polyamide wax and the organic solvent is completed and the temperature is reduced to 20 to 40 ℃.
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