CN114774210A - Low temperature stable unit dose detergent compositions - Google Patents

Low temperature stable unit dose detergent compositions Download PDF

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Publication number
CN114774210A
CN114774210A CN202110576479.3A CN202110576479A CN114774210A CN 114774210 A CN114774210 A CN 114774210A CN 202110576479 A CN202110576479 A CN 202110576479A CN 114774210 A CN114774210 A CN 114774210A
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low temperature
unit dose
solvent
detergent composition
temperature stable
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郭建华
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Hechuang Guangzhou Technology Research Co ltd
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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
    • 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
    • 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
    • C11D10/042—Compositions of detergents, not provided for by one single preceding group based on mixtures of surface-active non-soap compounds and soap based on anionic surface-active compounds and soap
    • 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
    • C11D10/045—Compositions of detergents, not provided for by one single preceding group based on mixtures of surface-active non-soap compounds and soap based on non-ionic surface-active compounds and soap
    • 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
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/04—Detergent materials or soaps characterised by their shape or physical properties combined with or containing other objects
    • C11D17/041—Compositions releasably affixed on a substrate or incorporated into a dispensing means
    • C11D17/042—Water soluble or water disintegrable containers or substrates containing cleaning compositions or additives for cleaning 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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/042—Acids
    • 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
    • C11D3/2003—Alcohols; Phenols
    • C11D3/2041—Dihydric alcohols
    • C11D3/2044—Dihydric alcohols linear
    • 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
    • C11D3/26—Organic compounds containing nitrogen
    • C11D3/30—Amines; Substituted amines ; Quaternized amines
    • 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
    • C11D3/26—Organic compounds containing nitrogen
    • C11D3/32—Amides; Substituted amides
    • C11D3/323—Amides; Substituted amides urea or derivatives 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
    • C11D3/16—Organic compounds
    • C11D3/37—Polymers
    • C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/3707—Polyethers, e.g. polyalkyleneoxides
    • 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
    • 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
    • C11D3/43—Solvents
    • 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
    • C11D1/008—Polymeric surface-active agents
    • 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
    • C11D1/06—Ether- or thioether carboxylic acids
    • 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
    • C11D1/22—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic 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
    • 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
    • C11D1/72—Ethers of polyoxyalkylene glycols

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

Abstract

The invention discloses a low temperature stable unit dose detergent composition. The water-soluble capsule comprises a water-soluble capsule, wherein a capsule cavity is formed in the capsule, liquid contents are contained in the capsule cavity, the liquid contents comprise a surfactant system and a solvent system, and the solvent system comprises 10-50 wt% of a solvent and 1-70 wt% of a solubilizing aid; wherein: the solvent comprises water and at least one alcohol solvent, and the content of the water is not more than 20 wt%; the solubilizing aid consists of a compound of formula I and/or a compound of formula II as follows: a compound of formula I:
Figure DDA0003084512150000011
wherein R1 is hydrogen ion or straight-chain alkyl, R2 is hydrogen ion or straight-chain alkyl; a compound of formula II:

Description

Low temperature stable unit dose detergent compositions
Technical Field
The invention belongs to the technical field of daily chemical industry, and particularly relates to a low-temperature stable unit dosage detergent composition.
Background
Currently, detergent products (e.g., granular laundry beads, etc.) that are quantified per unit dose have been gaining increased consumer acceptance and favor. The unit dosage detergent product is mainly characterized in that a water-soluble bag containing at least one cavity is made of high molecular materials, and the cavity is used for containing the liquid detergent composition. The unit-dose detergent product dissolves in water during the wash process and releases the liquid detergent composition in the capsule. In order to ensure that the unit dose detergent product remains stable over extended periods of storage, it is desirable that the liquid detergent composition encapsulated therein not contain too much water, otherwise the polymeric material may be dissolved by the water and cause the liquid detergent composition to leak out. Thus, the water content of the liquid detergent composition in a unit dose detergent product is typically no more than 15% by weight of the total detergent composition and needs to be replenished by the addition of alcoholic solvents. However, such washing products suffer from turbidity caused by precipitation at low temperatures due to the use of alcohol solvents. This is mainly because, although some alcohol solvents are commonly used as antifreeze agents, in such washing products, because a relatively large amount of surfactant is dissolved in the alcohol solvent, and the solubility of the surfactant in alcohol is lower than that of the surfactant in water, the detergent products are easy to separate out and become turbid at low temperature, which is not favorable for the production and sale of the detergent products in cold high-altitude areas.
Disclosure of Invention
The invention aims to provide a low-temperature stable unit dosage detergent composition, so as to effectively solve the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a low temperature stable unit dose detergent composition comprising a water soluble sachet having a cavity formed therein, the cavity containing a liquid content comprising a surfactant system and a solvent system, the solvent system comprising from 10 to 50% by weight of a solvent and from 1 to 70% by weight of a solubilising adjuvant; wherein: the solvent comprises water and at least one alcohol solvent, and the content of water is not more than 20 wt%; the solubilizing aid consists of a compound of formula I and/or a compound of formula II as follows:
a compound of formula I:
Figure BDA0003084512140000011
wherein R1 is hydrogen ion or straight-chain alkyl, R2 is hydrogen ion or straight-chain alkyl;
a compound of formula II:
Figure BDA0003084512140000021
wherein R3 is hydrogen or straight chain alkyl; x+Is a counter ion of the negative ion on the sulfonic acid group.
Preferably, the compound of formula I is urea.
Preferably, X is+Is hydrogen ion, ethanolamine ion, diethanolamine ion, triethanolamine ion, isopropanolamine ion, or a mixture thereof.
Preferably, the compound of formula II is sulfamic acid.
Preferably, the alcohol solvent includes ethanol, diethylene glycol, propylene glycol, glycerin, dipropylene glycol, polyethylene glycol, polypropylene glycol, or a mixture thereof.
Further, the water includes water present in other components.
Preferably, the surfactant system is present in an amount of 5 to 70% by weight.
Preferably, the surfactant system comprises at least one of an anionic surfactant system, a nonionic surfactant system and an amphoteric surfactant system.
Further, the present invention also includes at least one of enzymes, enzyme stabilizers, bleaching agents, soil suspending agents, optical brighteners, dyes, perfumes, rheology modifiers, pH adjusters, dye traps and preservatives.
Further, the weight ratio of the solubilizing aid to the solvent (comprising water and an alcohol solvent) is 3:1-1: 20.
Further, the weight percentage of the solvent (including water and alcohol solvent) in the liquid content is 20% -50%; the weight percentage of the solubilizing aid in the liquid content is 1-25%.
By adopting the technical scheme, the invention can effectively solve the problem of precipitation turbidity of the surfactant in the detergent composition with unit dosage at low temperature; meanwhile, the cost of the solubilizing aid is lower than that of the alcohol solvent, and the solubilizing aid partially replaces the using amount of the alcohol solvent, so that the total cost of the product can be reduced.
Detailed Description
The low temperature stable unit dose detergent composition of the present invention has a water soluble sachet having a sachet cavity containing liquid contents. The liquid contents include a surfactant system and a solvent system. The solvent system comprises 10-50 wt% of solvent and 1-70 wt% of solubilizing aid; wherein: the solvent comprises water and at least one alcohol solvent, and the content of the water is not more than 20 wt%; the solubilizing aid consists of a compound of formula I and/or a compound of formula II as follows:
a compound of formula I:
Figure BDA0003084512140000022
wherein R1 is hydrogen ion or straight-chain alkyl, R2 is hydrogen ion or straight-chain alkyl;
a compound of formula II:
Figure BDA0003084512140000031
wherein R3 is hydrogen or a straight chain alkyl group; x+The counter ion which is a negative ion on the sulfonic acid group is preferably a hydrogen ion, an ethanolamine ion, a diethanolamine ion, a triethanolamine ion, an isopropanolamine ion, or a mixture thereof.
The compound of formula I above is preferably urea.
The compound of formula II above is preferably sulfamic acid.
The alcohol solvent includes ethanol, diethylene glycol, propylene glycol, glycerol, dipropylene glycol, polyethylene glycol, polypropylene glycol or their mixture.
The solubilizing aid defined in the present invention is a substance that can increase the solubility of a surfactant at low temperatures and lower the precipitation temperature of the surfactant when the liquid content of the present invention is low and an alcohol solvent is used as a main solvent.
The weight percentage of the surfactant system is 5-70%, and the surfactant system can be selected from the second chapter (Zhao national seal, Zhu) from the surfactant action principle
Figure BDA0003084512140000032
Yao, Yao) specifically includes at least one of an anionic surfactant system, a nonionic surfactant system, and an amphoteric surfactant system.
The anionic surfactant system may preferably be selected from the group consisting of C8-C18 alkyl benzene sulfonates, fatty alcohol polyoxyethylene sulfates, C8-C18 alkyl sulfates, fatty alcohol polyoxyethylene carboxylates, alpha-olefin sulfonates, C8-C18 fatty acid methyl ester sulfonates, fatty acid methyl ester polyoxyethylene sulfonates, C8-C18 fatty acid salts, and mixtures thereof. Neutralized organic amine salts of various of the above anionic surfactants with monoethanolamine or diethanolamine or triethanolamine are preferred.
The nonionic surfactant can be preferably selected from fatty alcohol polyoxyalkyl ether, fatty acid methyl ester polyoxyalkyl ether and alkyl polysaccharide. The fatty alcohol polyoxyalkylene ether is a homo-or copolymer of a fatty alcohol and an alkyl epoxy compound, wherein the fatty alcohol has a linear or branched or unsaturated carbon chain of 8 to 24 carbon atoms, and mixtures thereof; wherein the alkyl epoxy compound has one epoxy group and an alkyl group having 2 to 12 carbon atoms, and is preferably ethylene oxide, propylene oxide, and mixtures thereof. The fatty acid methyl ester polyoxyalkyl ether is a homopolymer or copolymer of fatty acid methyl ester and alkyl epoxy compound, wherein the fatty acid methyl ester has a linear chain or branched chain or unsaturated carbon chain of 8-24 carbon atoms, and a mixture thereof; wherein the alkyl epoxy compound has one epoxy group and an alkyl group having 2 to 12 carbon atoms, and is preferably ethylene oxide, propylene oxide, and mixtures thereof.
The amphoteric surfactant may preferably be selected from the group consisting of cocamide acetate, cocamide diacetate, lauramide acetate, lauramide diacetate, lauryl sarcosinate, cocoyl glycinate, lauroyl glutamate, and mixtures thereof.
Within the knowledge of the inventor, the solubilizing aid of the invention has good compatibility with the commonly used surfactants, and can be arbitrarily compounded according to actual requirements.
The liquid contents of the present invention may further comprise other additive ingredients of conventional detergents including at least one of enzymes, enzyme stabilizers, bleaching agents, soil suspending agents, optical brighteners, dyes, perfumes, rheology modifiers, pH adjusters, dye traps and preservatives. The other additive components are added according to the formula requirements of the conventional detergent.
The enzyme may be selected from one or more of protease, lipase, amylase, cellulase, mannanase, pectin lyase and xyloglucanase.
The enzyme stabilizer may be one or more selected from the group consisting of calcium and/or magnesium containing compounds, inorganic salts of boric acid, organic substances containing boric acid groups, short chain carboxylic acid salts and glycine.
The bleaching agent may be selected from one or more of percarbonate, perborate, percarbamide and hypochlorite.
The soil suspending agent can be selected from one or more of polyethyleneimine and derivatives thereof, polyacrylic acid, polyacrylate and derivatives thereof, carboxymethyl cellulose, sodium carboxymethyl cellulose, carboxyethyl cellulose and sodium carboxyethyl cellulose.
The optical brightening agent can be selected from one or more of derivatives of distyrylbiphenyl.
The dye may be selected from any pigment, pigment or dye suitable for use in detergents, including natural and synthetic dyes.
The perfume may be selected from any perfume or odour-modifying agent suitable for use in detergents, including naturally extracted perfumes and artificially synthesised perfumes.
The rheology modifier can be selected from alcohol or water-soluble polymers, wherein the alcohol is preferably ethanol, and the water-soluble polymers comprise xanthan gum, carbomer and carrageenan.
The pH adjusting agent is typically a pair-wise combination of a weak polybasic acid and its metal salt, such as citric acid-sodium citrate, phosphoric acid-disodium hydrogen phosphate, or boric acid-sodium borate.
The following are some specific examples and comparative examples prepared according to the above technical scheme to illustrate the technical effects of the present invention. The cloud point test method comprises the following steps: samples of the liquid content of each example and comparative example were placed in a cryostat and the temperature was monitored, and the appearance of the samples was observed at 1 ℃ every 2 hours until the samples appeared cloudy, and the temperature at which the samples began to appear cloudy was recorded.
Figure BDA0003084512140000041
Figure BDA0003084512140000051
Comparing example 1 with comparative example 1, it can be seen that by using the combination of sulfamic acid and urea as a solubilizing aid to replace part of polyethylene glycol solvent, the precipitation turbidity temperature of the surfactant is greatly reduced, the usage amount of alcohol solvent is greatly reduced, and the overall cost of the formula is reduced.
Components Example 2 Example 3 Example 4 Comparative example 2 Comparative example 3
Glycerol 10 34 10 37 10
Water (W) 9.5 9.5 6.3 9.5 9.5
Monoethanolamine 3.5 3.5 4.7 3.5 3.5
Sulfamic acid 0 3 2 0 0
Urea 17 0 17 0 0
Polyethylene glycol PEG400 30 20 30 20 47
Straight chain alkyl benzene sulfonic acid 20 20 20 20 20
Fatty alcohol polyoxyethylene ether-9 10 10 10 10 10
Cloud Point (. degree. C.) <-18 <-18 <-18 -9 -2
Comparing examples 2-4 with comparative examples 2-3, it can be seen that by using the combination of sulfamic acid and/or urea as a solubilizing aid instead of part of the polyethylene glycol solvent, the precipitation turbidity temperature of the surfactant is greatly reduced, the usage amount of the alcohol solvent is reduced, and the overall cost of the formula is reduced.
Figure BDA0003084512140000052
Figure BDA0003084512140000061
Comparing example 5 with comparative examples 4-5, it can be seen that by using urea as a solubilizing aid instead of part of the mixed alcohol solvent, the precipitation turbidity temperature of the surfactant is reduced, the usage amount of the alcohol solvent is reduced, and the overall cost of the formula is reduced.
Figure BDA0003084512140000062
Comparing examples 6-9 with comparative examples 6-7, it can be seen that the combination of sulfamic acid and/or urea is used as a solubilizing aid to replace part of the mixed alcohol solvent, so that the precipitation turbidity temperature of the surfactant is reduced, the usage amount of the alcohol solvent is reduced, and the overall cost of the formula is reduced.
Figure BDA0003084512140000063
Figure BDA0003084512140000071
Comparing examples 10-13 with comparative examples 8-9, it can be seen that the cloud point of the formulation can be minimized by using urea alone as the solubilizing aid.

Claims (10)

1. A low temperature stable unit dose detergent composition comprising a water soluble sachet having a sachet cavity formed therein, the cavity containing liquid contents including a surfactant system and a solvent system,
the solvent system comprises 10-50 wt% of solvent and 1-70 wt% of solubilization adjuvant; wherein:
the solvent comprises water and at least one alcohol solvent, and the content of the water is not more than 20 wt%;
the solubilizing aid consists of a compound of formula I and/or a compound of formula II as follows:
a compound of formula I:
Figure FDA0003084512130000011
wherein R1 is hydrogen ion or straight-chain alkyl, R2 is hydrogen ion or straight-chain alkyl;
a compound of formula II:
Figure FDA0003084512130000012
wherein R3 is hydrogen or a straight chain alkyl group; and X + is a counter ion of negative ions on the sulfonic acid group.
2. The low temperature stable unit dose detergent composition of claim 1, wherein the compound of formula I is urea.
3. The low temperature stable unit dose detergent composition according to claim 1 or 2, wherein X is+Is a hydrogen ion, an ethanolamine ion, a diethanolamine ion, a triethanolamine ion, an isopropanolamine ion, or a mixture thereof.
4. The low temperature stable unit dose detergent composition of claim 3, wherein the compound of formula II is sulfamic acid.
5. The low temperature stable unit dose detergent composition according to claim 1, wherein the alcoholic solvent comprises ethanol, diethylene glycol, propylene glycol, glycerol, dipropylene glycol, polyethylene glycol, polypropylene glycol, or a mixture thereof.
6. The low temperature stable unit dose detergent composition according to claim 1, wherein the water comprises water present in other ingredients.
7. The low temperature stable unit dose detergent composition according to claim 1, wherein the surfactant system is present in an amount of 5-70% by weight.
8. The low temperature stable unit dose detergent composition of claim 7, wherein said surfactant system comprises at least one of an anionic surfactant system, a nonionic surfactant system, and an amphoteric surfactant system;
further comprising at least one of an enzyme, an enzyme stabilizer, a bleaching agent, a soil suspending agent, an optical brightener, a dye, a perfume, a rheology modifier, a pH adjuster, a dye trap, and a preservative.
9. The low temperature stable unit dose detergent composition of claim 1, wherein the weight ratio of the solubilizing aid to the solvent is 3:1 to 1: 20.
10. The low temperature stable unit dose detergent composition of claim 1, wherein the solvent is present in the liquid content at a weight percentage of 20% to 50%; the weight percentage of the solubilizing aid in the liquid content is 1-25%.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN115926896A (en) * 2022-11-02 2023-04-07 合创(广州)科技研究有限公司 High viscosity water soluble unit dose detergent compositions and process for making same
CN115926896B (en) * 2022-11-02 2024-05-14 合创(广州)科技研究有限公司 High viscosity water-soluble unit dose detergent compositions and methods of making same
CN116716142A (en) * 2023-05-15 2023-09-08 合创(广州)科技研究有限公司 Low-temperature stable-appearance washing composition

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