CN111117801B

CN111117801B - Anti-cross-color laundry detergent and preparation method thereof

Info

Publication number: CN111117801B
Application number: CN201911394677.7A
Authority: CN
Inventors: 骆雪琦
Original assignee: Guangzhou Dabai Bio Tech Co ltd
Current assignee: Guangzhou Dabai Bio Tech Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2021-11-02
Anticipated expiration: 2039-12-30
Also published as: CN111117801A

Abstract

The invention discloses a cross color prevention laundry detergent and a preparation method thereof, wherein the cross color prevention laundry detergent comprises the following components in percentage by mass: 0.05-0.3% of cationic guar gum, 0.1-2% of nonionic polymer, 5-30% of anionic surfactant and 3-30% of nonionic surfactant; the cationic guar gum contains polyoxyethylene groups; the nonionic polymer is one or more of polyoxyethylene alkylamine, polyoxyethylene amide, imidazoline polyoxyethylene ether and betaine nonionic polymer. According to the invention, the cationic guar gum and the nonionic polymer are used as the color fixing agent and the dye capturing agent, so that a good cross color prevention effect is realized. The selected cationic guar gum has certain water solubility, can reduce the occurrence of reabsorption of free dye, has good color fixing and cross-color preventing effects, can reduce the use amount by being used together with a dye capturing agent, reduces the influence on the detergency and stability of the detergent, and has better economic value.

Description

Anti-cross-color laundry detergent and preparation method thereof

Technical Field

The invention belongs to the technical field of detergent production, and particularly relates to a cross-color-preventing laundry detergent and a preparation method thereof.

Background

Laundry detergents are personal laundry detergents and have been developed rapidly due to their rapid dissolution, mild composition, and suitability for low temperature and mechanized laundering. The laundry detergent contains a surfactant, so that the detergent can remove stains strongly, but dyes in the fabrics can be eluted when the fabrics are washed, and the dyes enter the washing liquid after being eluted and are combined with the fabrics again to cause color cross. In order to reduce color cross-linking, a color fixing auxiliary agent can be added into the detergent, so that the probability of dye entering the washing liquid is reduced; meanwhile, a dye trapping agent can be added to trap dye molecules in the washing liquid and prevent the dye molecules from being combined with the fabric again. However, after the color fixing auxiliary agent is added, the color fixing auxiliary agent has an opportunity of adsorbing free dye in the washing liquid to cause color cross. In addition, the dye trapping agent may bind to the dye on the fabric, causing the fabric to fade. The anti-cross color laundry detergent needs to solve the problems that the original color of the fabric can be kept while the cross color is prevented, and the detergency and stability of the laundry detergent are affected by the addition of a color fixing auxiliary agent and a dye capturing agent.

Disclosure of Invention

Based on the above, the invention aims to provide a cross color prevention laundry detergent to effectively overcome the defects in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

the anti-cross-color laundry detergent comprises the following components in percentage by mass: 0.05-0.3% of cationic guar gum, 0.1-2% of nonionic polymer, 5-30% of anionic surfactant and 3-30% of nonionic surfactant; the nonionic polymer is one or more of polyoxyethylene alkylamine, polyoxyethylene amide, imidazoline polyoxyethylene ether and betaine nonionic polymer; the cationic guar gum contains polyoxyethylene groups, and the addition number of ethylene oxide is 5-12; .

Compared with the prior art, the anti-cross color laundry detergent disclosed by the invention has good color fixing and anti-cross color effects. Cationic guar gum containing polyoxyethylene groups and nonionic polymers are used as a color fixing agent and a dye capturing agent, the cationic guar gum can be combined with anionic dye molecules to reduce the probability of dye molecules entering washing liquid, the polyoxyethylene groups increase the water solubility of the cationic guar gum, the occurrence of reabsorption of free dyes can be reduced, and the color cross-linking problem caused by the color fixing agent is reduced. The nonionic polymer contains nitrogen atoms with weak electropositivity, and can form molecular acting force with the dye to effectively capture free dye. The cationic guar gum has more positive electricity than the nonionic polymer, is firstly combined with the dye on the fabric when the fabric is washed, reduces the adverse effect of fading caused by the adsorption of the nonionic polymer on the dye on the fabric by the compatible use of the cationic guar gum and the dye, simultaneously can reduce the using amount of the nonionic polymer and the dye, reduces the influence on the detergency and stability of the detergent, and has better economic value.

Further, the paint comprises the following components in percentage by mass: 0.1-0.15% of cationic guar gum, 0.5-1.5% of nonionic polymer, 8-20% of anionic surfactant and 5-22% of nonionic surfactant.

Further, the cationic guar also has the following physicochemical characteristics: the molar substitution degree is 0.2-0.6, the viscosity of 1% aqueous solution is 3000-4500, and the nitrogen content is 0.3-0.6. The polyoxyethylene group enhances the water solubility of the cationic guar gum, so that the cationic guar gum can be partially dissolved in washing liquid, and the influence of cross color caused by re-adsorption of free dye can be reduced.

Further, the anionic surfactant comprises a short carbon chain branched fatty alcohol sulfate, the carbon chain length is 6-10, and the anionic surfactant contains one or more branched groups; the dosage of the short carbon chain branched fatty alcohol sulfate is 0.5-2%. The short carbon chain branched fatty alcohol sulfate is not only used as the component of the anionic surfactant, but also used as the auxiliary agent of the invention. The association complex of anion and cation solubilized by the short carbon chain branched fatty alcohol sulfate can enhance the compatibility stability of the cationic guar gum and the anionic surfactant in the formula.

Further, the anionic surfactant further comprises one or more of sodium alkyl benzene sulfonate, sodium fatty alcohol ether polyoxyethylene ether sulfate, sodium olefin sulfonate, sodium fatty acid carboxylate and potassium fatty acid carboxylate.

Further, the nonionic surfactant is one or more of linear fatty alcohol polyoxyethylene ether, alkyl glycoside, coconut oil fatty acid diethanolamide and fatty acid methyl ester polyoxyethylene ether; the carbon chain length of the straight-chain fatty alcohol polyoxyethylene ether is 12-16, and the addition degree of the ethylene oxide is 7-9.

Further, the solvent is one or more of deionized water, propylene glycol and ethanol.

Further, the composition also comprises one or more of a chelating agent, a biological enzyme, an anti-redeposition agent, a foam control agent, a coloring agent, a perfume essence and an antiseptic. The auxiliary agent can be selectively added into the laundry detergent to realize corresponding functions.

The invention also aims to provide a preparation method of the cross-color-proof laundry detergent, which comprises the following steps:

preparation of solution A: according to the weight percentage, the anionic surfactants except the short carbon chain branched fatty alcohol sulfate are taken one by one in a container and stirred and dissolved completely; adding cationic guar gum into the mixture, and uniformly stirring to obtain a mixture; adding short carbon chain branched fatty alcohol sulfate into the mixture, and stirring until the mixture is completely dissolved to form transparent liquid, thereby obtaining mixture A liquid;

and (3) preparation of a liquid B: taking a nonionic polymer, and dissolving the nonionic polymer uniformly by using a proper amount of deionized water until no insoluble substance is precipitated to obtain a nonionic polymer solution; according to the weight percentage, the nonionic surfactant is taken one by one in a container and stirred to be completely dissolved, then the nonionic polymer solution is added into the container and stirred uniformly to obtain a mixture B liquid;

preparing a laundry detergent: and uniformly stirring the mixture solution A and the mixture solution B, and adding the rest other components to obtain the laundry detergent.

Compared with the prior art, the invention has the following advantages:

1. cationic guar gum containing polyoxyethylene groups is selected as a color fixing agent, has certain water solubility, can be partially dissolved in washing liquid after being combined with dye in the fabric, and prevents the color cross caused by the fact that the cationic guar gum is adhered to the fabric and adsorbs free dye again.

2. The cationic guar gum and the nonionic polymer are used in a compatible manner, so that two effects of color fixation and color cross-over prevention are achieved. The cationic guar gum has stronger electropositivity and is firstly combined with the anionic dye, so that the probability of dye adsorption of the nonionic polymer is reduced, and the fabric fading effect caused by the dye capture agent is reduced.In additionIn addition, the dye trapping agent has high dosage and is easy to elute the dye on the fabric, so that the fabric is faded, and the compatibility of the fixing agent and the dye trapping agent reduces the dosage of the fixing agent and the dye trapping agent on one hand, so that the side effects of fading and color cross caused by the dye trapping agent and the dye trapping agent are reduced; on the other hand, the problems of formula stability, transparency and the like are reduced, the influence on the detergency and stability of the detergent can be reduced, and the detergent has better economic value.

3. The nonionic polymer is one or more selected from polyoxyethylene alkylamine, polyoxyethylene amide, imidazoline polyoxyethylene ether and betaine nonionic polymer, contains positively charged nitrogen atoms, can form intermolecular force with anionic dye molecules, effectively and firmly captures dye molecules in washing liquid, and reduces cross color caused by redeposition of free dye molecules on fabrics.

4. The short carbon chain branched fatty alcohol sulfate is selected to help the cationic guar gum to be stably compatible with the anionic surfactant in the laundry detergent.

For a better understanding and practice, the present invention is described in detail below.

Detailed Description

The present invention will be described in further detail with reference to specific examples.

The invention relates to a cross-color-prevention laundry detergent which is prepared from the following components in percentage by mass: 0.05-0.3% of cationic guar gum, 0.1-2% of nonionic polymer, 5-30% of anionic surfactant and 3-30% of nonionic surfactant. Also comprises 1.3 to 2.5 percent of auxiliary materials and the balance of water, wherein the auxiliary materials are selected from one or more of chelating agent, biological enzyme, anti-redeposition agent, foam control agent, colorant, perfume essence and preservative.

Specifically, the nonionic polymer contains nitrogen atoms with weak electropositivity, and can be one or more of polyoxyethylene alkylamine, polyoxyethylene amide, imidazoline polyoxyethylene ether and betaine nonionic polymers. The nonionic polymer is preferably imidazoline polyoxyethylene ether, and less preferably betaine nonionic polymer. The nonionic polymer can form molecular force with the dye, and effectively capture the free dye.

Specifically, the cationic guar gum contains polyoxyethylene groups, and the addition number of ethylene oxide is 5-12. The polyoxyethylene groups enhance the water solubility of the cationic guar. The cationic guar also has the following physicochemical characteristics: the molar substitution degree is 0.2-0.6, the viscosity of 1% aqueous solution is 3000-4500, and the nitrogen content is 0.3-0.6. Cationic guar with reasonable degree of substitution, viscosity and nitrogen content can maintain suitable cationic properties while having suitable water solubility, providing fixation while reducing the occurrence of cross-color.

Specifically, the surfactant comprises a short-carbon-chain branched fatty alcohol sulfate anionic surfactant, has a carbon chain length of 6-10, and contains one or more branched groups. The dosage of the short carbon chain branched fatty alcohol sulfate is 0.5-2%. As an aid in the present invention. The cationic guar gum and the anionic surfactant are compounded and repelled, and the combination of the anionic surfactant and the cationic surfactant in the aqueous solution easily generates insoluble salts which are separated out from the solution, so that the surface activity is lost, and the effects of washing and decontamination cannot be exerted. In order to reduce the adverse effect of the compatibility of the cationic guar gum and the dye trapping agent, the technical scheme of compounding the fixing agent cationic guar gum and the dye trapping agent nonionic polymer is adopted to reduce the dosage of the cationic guar gum and reduce the compound repulsion effect of anions and cations, and meanwhile, the association of the anions and cations is solubilized by using the short carbon chain branched chain fatty alcohol sulfate, so that better compatibility is achieved.

The laundry detergent contains anionic surfactant and nonionic surfactant, and the anionic surfactant and the nonionic surfactant have good synergistic effect and good economic value after being compounded. Specifically, the anionic surfactant further comprises one or more of sodium alkyl benzene sulfonate, sodium fatty alcohol ether polyoxyethylene ether sulfate, sodium olefin sulfonate, sodium fatty acid carboxylate and potassium fatty acid carboxylate. The nonionic surfactant is one or more of straight-chain fatty alcohol-polyoxyethylene ether, alkyl glycoside, coconut oil fatty acid diethanolamide and fatty acid methyl ester polyoxyethylene ether; the carbon chain length of the straight-chain fatty alcohol polyoxyethylene ether is 12-16, and the addition degree of the ethylene oxide is 7-9.

Specifically, the paint also comprises a solvent, wherein the solvent is one or more of deionized water, propylene glycol and ethanol.

The invention also provides a preparation method of the anti-cross-color laundry detergent, which comprises the following steps:

preparing a laundry detergent: and uniformly stirring the mixture solution A and the mixture solution B, and selectively adding auxiliary materials and water to obtain the laundry detergent.

Examples 1 to 8

The laundry detergents of examples 1-8 of the present invention were prepared using the above preparation method. The following table lists the components and amounts of the laundry detergent compositions of examples 1-8 of the present invention.

Table 1 lists the compositions of examples 1-8

Effect test

1. And (4) measuring the decontamination capability.

Taking the samples of the embodiments 1-8, the detergency determination is carried out by referring to the detergency determination method in the QB/T1224-.

Table 2

As can be seen from table 2, the laundry detergent prepared according to the present invention has a stronger detergency than the standard laundry detergent.

2. And (5) color cross-color prevention performance experiments.

The test method comprises the following steps: respectively weighing national standard laundry detergent, commercially available color-protecting alleged laundry detergent and 1 g of each of the laundry detergents of examples 1-8, adding 1 liter of hard water with the hardness of 250ppm into a washing tank of a vertical decontamination machine, uniformly dissolving, adding 2 pieces of colored cloth and 2 pieces of white cloth (6 x 6cm, commercially available) into each washing tank, and mixing and washing for 25 minutes at 25 ℃. The colored cloth is formed by dyeing white cloth by two dyes of direct blue and direct red which are sold in the market. And measuring the color difference value of the colored cloth and the white cloth before washing, rinsing with clean water twice after washing, naturally drying, and testing the color difference of the colored cloth and the white cloth. The smaller the difference value of the white cloth is, the better the anti-cross color performance is, and the smaller the difference value of the colored cloth is, the better the color fixing effect is. The test results are shown in the following table

Table 3

As can be seen from Table 3, the difference value of the colored cloth of the laundry detergents of the embodiments 1 to 8 of the invention is smaller than that of the commercial color-protecting laundry detergents and the standard laundry detergents, and the laundry detergents have good color fixing effect; the overall effect of the color difference value of the white cloth is better than that of the commercial color-protecting laundry detergent and the standard laundry detergent, and the cross color prevention effect is good.

The laundry detergent disclosed by the invention is compounded by cationic guar gum containing polyoxyethylene groups and a nonionic polymer with weak electropositive nitrogen atoms, and has good color fixing and cross-color preventing effects. In addition, the compounding of the two reduces the probability of dye adsorption of the nonionic polymer and reduces the fading effect of the fabric caused by the dye trapping agent; the dosage of the two is reduced, the compound repulsion of anions and cations is reduced, the better compatibility is achieved, the influence on the detergency and the stability of the detergent is reduced, and the economic value is better.

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.

Claims

1. The anti-cross-color laundry detergent is characterized by comprising the following components in percentage by mass: 0.05-0.3% of cationic guar gum, 0.1-2% of nonionic polymer, 5-30% of anionic surfactant and 3-30% of nonionic surfactant;

the nonionic polymer is one or more of polyoxyethylene alkylamine, imidazoline polyoxyethylene ether and betaine nonionic polymer;

the cationic guar gum contains polyoxyethylene groups, and the addition number of ethylene oxide is 5-12;

the cationic guar also has the following physicochemical characteristics: the molar substitution degree is 0.2-0.6, the viscosity of 1% aqueous solution is 3000-4500, and the nitrogen content is 0.3-0.6;

the anionic surfactant comprises short carbon chain branched fatty alcohol sulfate, the carbon chain length is 6-10, and the anionic surfactant contains one or more branched groups; the dosage of the short carbon chain branched fatty alcohol sulfate is 0.5-2%;

the anionic surfactant also comprises sodium alkyl benzene sulfonate and sodium fatty alcohol ether polyoxyethylene ether sulfate;

the nonionic surfactant comprises straight-chain fatty alcohol polyoxyethylene ether, the carbon chain length of the straight-chain fatty alcohol polyoxyethylene ether is 12-16, and the addition degree of ethylene oxide is 7-9.

2. The cross color prevention laundry detergent as claimed in claim 1, characterized in that: the paint is prepared from the following components in percentage by mass: 0.1-0.15% of cationic guar gum, 0.5-1.5% of nonionic polymer, 8-20% of anionic surfactant and 5-22% of nonionic surfactant.

3. The cross color prevention laundry detergent as claimed in claim 2, characterized in that: the anionic surfactant further comprises one or more of olefin sodium sulfonate, fatty acid sodium carboxylate and fatty acid potassium carboxylate.

4. The cross color prevention laundry detergent as claimed in claim 1, characterized in that: the nonionic surfactant also comprises one or more of alkyl glycoside, coconut oil fatty acid diethanolamide and fatty acid methyl ester polyoxyethylene ether.

5. The cross color prevention laundry detergent as claimed in claim 1, characterized in that: the solvent is one or more of deionized water, propylene glycol and ethanol.

6. The cross color prevention laundry detergent as claimed in claim 1, characterized in that: also comprises one or more of chelating agent, biological enzyme, anti-redeposition agent, foam control agent, colorant, perfume essence and preservative.

7. The preparation method of the anti-cross color laundry detergent as claimed in any one of claims 1-6, characterized by comprising the following steps: