Storage yellowing prevention agent for chinlon and blended fabric of chinlon as well as preparation method and application of storage yellowing prevention agent

Abstract

The invention provides a storage yellowing prevention agent for chinlon and blended fabrics thereof, and a preparation method and application thereof, and belongs to the technical field of chemical additives for textile printing and dyeing. The storage yellowing prevention agent for the chinlon and the chinlon blended fabric comprises the following components: a polymeric monomer, an organic amine compound, an organic solvent, a pH regulator and water, the polymeric monomer is selected from one or more of an acrylic polymeric monomer and an acrylamide polymeric monomer; the catalyst is a sulfur-containing catalyst. The storage yellowing prevention agent for the chinlon and the blended fabric thereof provided by the invention has the advantages of excellent phenolic yellowing resistance, no bubble, good stability and no influence on the hand feeling and color change of the fabric.

Description

Technical Field

[0001] The invention belongs to the technical field of chemical auxiliaries for textile printing and dyeing, and relates to an agent for preventing nylon and its blended fabrics from yellowing during storage, and specifically relates to an agent for preventing nylon and its blended fabrics from yellowing during storage, and a preparation method and application thereof. Background Art

[0002] Nylon fabric has a soft feel and good wear resistance and is widely used. However, nylon and its blended fabrics or their finished garments often turn yellow during production, storage and transportation due to the absorption of free phenol BHT (butylated hydroxytoluene, a common antioxidant in plastics) and nitrogen oxides, especially white and bright colors.

[0003] In order to solve the yellowing problem caused by the absorption of free phenol BHT and nitrogen oxides by fabrics or their finished garments, it is necessary to provide a nylon storage yellowing prevention agent.

[0004] The invention patent with the publication number CN115772812A discloses an environmentally friendly mixed acid dye for mixed wool and its production method. The acid dye fixing agent is prepared by using t-butyl acrylamide sulfonic acid, acrylic acid and sodium acrylate as raw materials, which reduces the water solubility of the fixing agent and enhances the fixing effect. Starch dextrin is prepared by grafting carboxymethyl starch with acrylamide, and microcapsules formed by carboxymethyl chitosan solution and sodium alginate coating tannic acid form a composite original paste with starch dextrin dye. Through the coating of microcapsules, the dye is attached to the fiber surface while releasing tannic acid, and a layer of composite association film is generated on the fiber surface at the first time, blocking the gap and reducing the diffusion of the dye, thereby improving various fastnesses; microcapsules can avoid the occurrence of yellowing or fading of fabrics due to oxidation discoloration of tannic acid; synergistic acid dye fixing agent can fix the color without causing color change. It can be seen that this scheme is aimed at the oxidation discoloration of tannic acid, which causes the fabric to turn yellow or fade.

[0005] The invention patent with the publication number CN 115928428A discloses an auxiliary agent for textiles to resist high temperature yellowing and phenol yellowing, a preparation method and its application. The auxiliary agent is configured by a high temperature yellowing agent and an anti-phenol yellowing agent. The high temperature yellowing agent includes, by percentage, an antioxidant: 10-30%, a cosolvent: 5-20%, an emulsifier: 0-10%, and the rest is water; the anti-phenol yellowing agent includes, by percentage, an anti-phenol yellowing agent: 10-30%, a pH adjuster: 5-15%, and the rest is water. The anti-phenol yellowing agent is a mixture of one or more of alkyl sulfonate, alkylbenzene sulfonate, alkyl sulfate ester salt, and alkyl diphenyl ether disulfonate. The pH adjuster is a mixture of one or more of citric acid, malic acid, glycolic acid, lactic acid, polylactic acid, polyacrylic acid, and polymaleic acid. The anti-yellowing agent in this scheme does not contain adipic acid dihydrazide components, will not adsorb formaldehyde in the environment, and avoids excessive formaldehyde content in finished clothing. The preparation method is simple, convenient and easy to operate, and can simultaneously impart good high temperature yellowing resistance and phenol yellowing resistance to the fabric through a rolling and baking process.

[0006] The above existing technologies do not completely solve the main problems existing in the nylon storage yellowing prevention agent in the industry:

[0007] (1) Excessive foaming causes trouble for factory production;

[0008] (2) The anti-yellowing effect of the storage anti-yellowing agent is not ideal and the hand feels greasy.

[0009] Since there is a lot of foam in the anti-phenol yellowing processing of nylon in printing and dyeing factories, the anti-phenol yellowing treatment is uneven, the color of the treated fabric is affected, and the hand feel is slippery and sticky, which seriously affects the production. In order to solve the problems of yellowing of nylon and its blended fabrics during storage, excessive foam, poor hand feel and poor color stability, the present invention provides a storage yellowing prevention agent for nylon and its blended fabrics, and a preparation method and application thereof. Summary of the invention

[0010] The present invention aims at the problems existing in the prior art and provides a storage yellowing prevention agent for nylon and its blended fabrics and a preparation method and application thereof. The storage yellowing prevention agent for nylon and its blended fabrics provided by the present invention can effectively solve the above problems, has both anti-phenol yellowing effect and foam, and can ensure that the feel of the treated fabric is not affected, improves the quality of the produced fabrics, significantly improves the production efficiency, and enriches the product types on the market.

[0011] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0012] In a first aspect, the present invention provides a storage yellowing prevention agent for nylon and its blended fabrics, comprising the following components:

[0013] Polymerization monomer, catalyst, amine compound, organic solvent, pH adjuster and water;

[0014] The polymerizable monomer is selected from one or more of acrylic acid polymerizable monomers and acrylamide polymerizable monomers;

[0015] The catalyst is a sulfur-containing catalyst.

[0016] Preferably, the polymerizable monomer is selected from acrylic acid polymerizable monomers or acrylamide polymerizable monomers, the acrylic acid polymerizable monomer is acrylic acid, the acrylamide polymerizable monomer is 2-acrylamide-2-methylpropanesulfonic acid and / or acrylamide. The polymerizable monomer is more preferably acrylic acid or acrylamide, and most preferably acrylic acid.

[0017] The organic amine compound is selected from one or more of dimethylamine, monoethanolamine, diethylamine and triethanolamine, preferably diethylamine or triethanolamine, more preferably diethylamine.

[0018] The organic solvent is selected from one or both of isopropyl alcohol and diethylene glycol, preferably isopropyl alcohol or diethylene glycol, more preferably diethylene glycol.

[0019] The pH regulator is selected from one or more of ammonia water and citric acid, preferably citric acid.

[0020] The sulfur-containing catalyst is selected from one or more of sulfate, sulfite, persulfate and concentrated sulfuric acid. Preferably, the sulfate is potassium sulfate; the sulfite is sodium bisulfite; and the persulfate is ammonium persulfate. The sulfur-containing catalyst is preferably sodium bisulfite and / or ammonium persulfate, more preferably ammonium persulfate.

[0021] Preferably, the agent for preventing nylon and its blended fabrics from yellowing during storage further comprises a surfactant, and the surfactant is preferably an alcohol ether carboxylate.

[0022] In one embodiment, the storage yellowing prevention agent for nylon and its blended fabrics comprises the following components: 2-acrylamide-2-methylpropanesulfonic acid, ammonia water, organic solvent, dimethylamine, acrylic acid, sodium bisulfite, potassium sulfate and water.

[0023] In one embodiment, the storage yellowing prevention agent for nylon and its blended fabrics comprises the following components: acrylic acid, concentrated sulfuric acid, alcohol ether carboxylate, monoethanolamine, isopropyl alcohol, citric acid and water.

[0024] In one embodiment, the storage yellowing prevention agent for nylon and its blended fabrics comprises the following components: acrylamide, diethylamine, ammonium persulfate, triethanolamine, diethylene glycol, citric acid and water.

[0025] The nylon and its blended fabric storage yellowing prevention agent preferably includes the following components in percentage by mass:

[0026] 20-40% polymerization monomer, 0.5-20% catalyst, 1-5% organic amine compound, 1-5% organic solvent, 0.5-2% pH regulator and the balance water.

[0027] More preferably, the storage yellowing prevention agent for nylon and its blended fabrics comprises the following components in percentage by weight: 20-40% of polymerization monomer, 2-5% of catalyst, 3-5% of organic amine compound, 5% of organic solvent, 2% of pH regulator and the balance of water.

[0028] In one embodiment, the mass percentage of each component of the nylon and its blended fabric storage yellowing prevention agent is: 20-40% polymerized monomer, 1-5% amine compound, 1-5% organic solvent, 0.5-2% pH regulator, 0.5-5% sulfate and the balance of water. Preferably, 20-40% polymerized monomer, 1-5% amine compound, 1-5% organic solvent, 0.5-2% pH regulator, 0.5-5% sulfate and the balance of water. Preferably, 20% polymerized monomer, 5% amine compound, 5% organic solvent, 2% pH regulator, 2-5% sulfate and the balance of water, more preferably 20% polymerized monomer, 5% amine compound, 5% organic solvent, 2% pH regulator, 2% sulfate and the balance of water.

[0029] In one embodiment, the mass percentage of each component of the nylon and its blended fabric storage yellowing prevention agent is: 20-40% polymerized monomer, 1-5% amine compound, 1-5% organic solvent, 0.5-2% pH regulator, 0.5-20% alcohol ether carboxylate and the balance water. Preferably, 20-40% polymerized monomer, 1-5% amine compound, 1-5% organic solvent, 0.5-2% pH regulator, 2-20% alcohol ether carboxylate and the balance water.

[0030] In a second aspect, the present invention provides a method for preparing the storage yellowing prevention agent for nylon and its blended fabrics described in the above technical solution, comprising the following steps:

[0031] In the presence of a catalyst, the polymerization monomer is polymerized in water, the system after the polymerization reaction is cooled to 20-60°C, and then an organic amine compound is added for neutralization reaction, and a pH regulator is used to adjust the pH value of the product to 2-7 to obtain an organic polymer with a sulfonic acid side chain, which is purified by an organic solvent to obtain a storage yellowing inhibitor for nylon and its blended fabrics.

[0032] Preferably, the polymerization reaction temperature is 95-110° C. and the time is 4-6 hours.

[0033] In the third aspect, the present invention provides an application of the anti-yellowing agent for nylon and its blended fabrics described in the above technical scheme or the anti-yellowing agent for nylon and its blended fabrics prepared by the preparation method described in the above technical scheme in fabric treatment, and the dosage of the anti-yellowing agent for nylon and its blended fabrics is 10-40g / L.

[0034] The nylon and its blended fabric storage yellowing prevention agent is used to treat fabrics through a padding process, and the fabrics include but are not limited to yarns, lace, ribbons, knitted fabrics or woven fabrics made of nylon, polyester, acrylic, spandex, cotton, rayon, Tencel, modal, lyocell, silk, wool, cashmere, bamboo fiber and hemp fiber materials.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] The storage yellowing prevention agent for nylon and its blended fabrics of the present invention has the following advantages:

[0037] (1) The storage yellowing prevention agent for nylon and its blended fabrics of the present invention has excellent anti-phenol yellowing effect and can effectively block the free amino groups on the fibers of nylon and its blended fabrics;

[0038] (2) The nylon and its blended fabric storage anti-yellowing agent of the present invention does not generate bubbles, which reduces the risk of production defects and improves the first-time success rate;

[0039] (3) After the nylon and its blended fabrics of the present invention are treated with a yellowing prevention agent for storage, the feel of the fabrics is not affected;

[0040] (4) After the nylon and its blended fabrics of the present invention are treated with a storage yellowing prevention agent, the fabrics do not change color;

[0041] (5) The nylon and its blended fabrics of the present invention have good storage stability against yellowing and can be bathed with most softeners without conflict. DETAILED DESCRIPTION

[0042] It is worth noting that, unless otherwise specified, the raw materials used in the present invention are all common commercially available products, and their sources are not specifically limited.

[0043] Example 1

[0044] The storage yellowing prevention agent for nylon and its blended fabrics is composed of the following components in parts by mass:

[0045] 66 parts of water, 20 parts of acrylic acid, 2 parts of sodium bisulfite, 5 parts of diethylamine, 5 parts of isopropanol, and 2 parts of citric acid.

[0046] Preparation method of anti-yellowing agent for nylon and its blended fabrics during storage:

[0047] In the presence of sodium bisulfite, the polymerization monomer acrylic acid is polymerized in water at a polymerization temperature of 95-110°C for 4-6 hours. The system after the polymerization reaction is cooled to 40-60°C, and then an organic amine compound is added for neutralization reaction. A pH regulator is used to adjust the pH value of the product to 5-7 to obtain an organic polymer with a sulfonic acid side chain. The organic solvent is used for purification to obtain a storage yellowing inhibitor for nylon and its blended fabrics.

[0048] Example 2

[0049] The storage yellowing prevention agent for nylon and its blended fabrics is composed of the following components in parts by mass:

[0050] 43 parts of water, 40 parts of acrylic acid, 5 parts of sodium hydrogen sulfite, 5 parts of diethylamine, 5 parts of isopropyl alcohol, and 2 parts of citric acid.

[0051] According to the method of Example 1, a storage yellowing prevention agent for nylon and its blended fabrics was prepared.

[0052] Example 3

[0053] The storage yellowing prevention agent for nylon and its blended fabrics is composed of the following components in parts by mass:

[0054] 65 parts of water, 23 parts of acrylic acid, 2 parts of sodium bisulfite, 3 parts of diethylamine, 5 parts of isopropanol, and 2 parts of citric acid.

[0055] According to the method of Example 1, a storage yellowing prevention agent for nylon and its blended fabrics was prepared.

[0056] Example 4

[0057] The storage yellowing prevention agent for nylon and its blended fabrics is composed of the following components in parts by mass:

[0058] 61 parts of water, 40 parts of acrylic acid, 5 parts of concentrated sulfuric acid, 2 parts of alcohol ether carboxylate, 5 parts of monoethanolamine, 5 parts of isopropanol, and 2 parts of citric acid.

[0059] According to the method of Example 1, a storage yellowing prevention agent for nylon and its blended fabrics was prepared.

[0060] Example 5

[0061] The storage yellowing prevention agent for nylon and its blended fabrics is composed of the following components in parts by mass:

[0062] 48 parts of water, 20 parts of 2-acrylamide-2-methylpropanesulfonic acid, 20 parts of acrylic acid, 5 parts of sodium hydrogen sulfite, 5 parts of potassium sulfate, 5 parts of dimethylamine, 5 parts of isopropanol (organic solvent), and 2 parts of aqueous ammonia.

[0063] According to the method of Example 1, a storage yellowing prevention agent for nylon and its blended fabrics was prepared.

[0064] Comparative Example 1

[0065] The difference from Example 1 is that different types of polymerization monomers are used.

[0066] Specifically, the storage yellowing prevention agent for nylon and its blended fabrics is composed of the following components in parts by mass:

[0067] 66 parts of water, 20 parts of acrylamide, 2 parts of sodium bisulfite, 5 parts of diethylamine, 5 parts of isopropanol, and 2 parts of citric acid.

[0068] The storage yellowing prevention agent for nylon and its blended fabrics was prepared according to the method of Example 1.

[0069] Comparative Example 2

[0070] The difference from Example 1 is that different types of amine compounds are used.

[0071] Specifically, the storage yellowing prevention agent for nylon and its blended fabrics is composed of the following components in parts by mass:

[0072] 66 parts of water, 20 parts of acrylic acid, 2 parts of sodium bisulfite, 5 parts of monoethanolamine, 5 parts of isopropanol, and 2 parts of citric acid.

[0073] The storage yellowing prevention agent for nylon and its blended fabrics was prepared according to the method of Example 1.

[0074] Comparative Example 3

[0075] The difference from Example 1 is that different types of pH regulators are used.

[0076] Specifically, the storage yellowing prevention agent for nylon and its blended fabrics is composed of the following components in parts by mass:

[0077] 66 parts of water, 20 parts of acrylic acid, 2 parts of sodium bisulfite, 5 parts of monoethanolamine, 5 parts of isopropanol, and 2 parts of aqueous ammonia.

[0078] The storage yellowing prevention agent for nylon and its blended fabrics was prepared according to the method of Example 1.

[0079] Comparative Example 4

[0080] The difference from Example 1 is that different types of catalysts are used.

[0081] Specifically, the storage yellowing prevention agent for nylon and its blended fabrics is composed of the following components in parts by mass:

[0082] 66 parts of water, 20 parts of acrylic acid, 2 parts of potassium sulfate, 5 parts of diethylamine, 5 parts of isopropanol, and 2 parts of citric acid.

[0083] The storage yellowing prevention agent for nylon and its blended fabrics was prepared according to the method of Example 1.

[0084] Comparative Example 5

[0085] The difference from Example 1 is that different mass fractions of components are used.

[0086] The storage yellowing prevention agent for nylon and its blended fabrics is composed of the following components in parts by mass:

[0087] 55 parts of water, 10 parts of acrylic acid, 10 parts of sodium hydrogen sulfite, 10 parts of diethylamine, 10 parts of isopropyl alcohol, and 5 parts of citric acid.

[0088] The storage yellowing prevention agent for nylon and its blended fabrics was prepared according to the method of Example 1.

[0089] Experiment 1: Anti-phenol yellow effect test:

[0090] Formula: Storage yellowing prevention agent for nylon and its blended fabrics Xg / L; Fabric: White nylon-spandex fabric;

[0091] Process: two dips and two rolls → 160℃×90S shaping and drying → phenol yellow test

[0092] Test method: ISO 105-X12, the higher the whiteness value of the fabric after treatment with ISO 105-X12, the better the anti-phenol yellowing effect;

[0093] The results are shown in Table 1, and it can be seen that the anti-phenolic yellowing agents of Examples 1-5 of the present invention have excellent anti-phenolic yellowing effects.

[0094] Table 1: Test results of anti-phenol yellow effect

[0095]

[0096] Experiment 2: Color change test

[0097] Formula: Anti-phenol Anti-phenol yellowing Xg / L;

[0098] Fabric: Acid AFN blue dye 1% (owf) dyed fabric;

[0099] Process: two dips and two rolls → 160℃×90S shaping and drying → color change test and rating.

[0100] Rating: ISO 105X12

[0101] The higher the rating number, the smaller the color change.

[0102] The results are shown in Table 2. It can be seen that on the blue nylon fabric, the color change of the nylon and its blended fabrics treated with the storage yellowing prevention agent in Examples 1-5 of the present invention is significantly smaller than that of market samples 1 and 2, and there is basically no color change.

[0103] Table 2: Test results of color change of different nylon and its blended fabrics treated with storage yellowing prevention agents:

[0104]

[0105] Experiment 3: Foam Test

[0106] Test method: Roche foam method in ASTM D1173-07.

[0107] The results are shown in Table 3, and it can be seen that the nylon and its blended fabrics of Examples 1-5 of the present invention are substantially free of bubbles after storage yellowing prevention agent.

[0108] Table 3: Test results of foaming of different nylon and its blended fabrics during storage with anti-yellowing agents

[0109]

[0110] Experiment 4: Hand feel test

[0111] Formula: Anti-phenol Anti-phenol yellowing Xg / L;

[0112] Fabric: White nylon-spandex fabric;

[0113] Process: two dips and two rolls → 160℃×90S shaping and drying → hand feel evaluation;

[0114] Note: The score is based on a 100-point system and is scored by professionals who evaluate lubrication in the bath. The higher the score, the better the feel, and the lower the score, the worse the feel. The higher the feel score, the less impact on the feel.

[0115] The results are shown in Table 4, and it can be seen that the storage yellowing prevention agent for nylon and its blended fabrics in Examples 1-5 of the present invention has substantially no effect on the feel of the treated fabrics.

[0116] Table 4: Test results of the feel of different nylon and its blended fabrics after storage yellowing prevention agent:

[0117]

[0118]

[0119] Experiment 5: Risk of conflict between yellowing inhibitors and softeners during storage of different nylon and its blended fabrics:

[0120] Formula: Storage yellowing prevention agent for nylon and its blended fabrics X g / L + softener (SF-803AQ of Doen Biotechnology Co., Ltd.) Yg / L; Test method: Prepare working solution and observe the stability of the working solution;

[0121] The results are shown in Table 5, and it can be seen that the nylon and its blended fabrics of Examples 1-5 of the present invention have high stability after the storage yellowing prevention agent is mixed with the softener, and the conflict risk is extremely low.

[0122] Table 5: Conflict risk test results of storage yellowing inhibitors and softeners for different nylon and its blended fabrics:

[0123]

[0124]

[0125] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions of the technical solution of the present invention by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the present invention.

Claims

1. A storage yellowing prevention agent for nylon and its blended fabrics, characterized in that: Includes the following components: Polymerization monomer, catalyst, organic amine compound, organic solvent, pH adjuster and water; The polymerizable monomer is selected from one or more of acrylic acid polymerizable monomers and acrylamide polymerizable monomers; The catalyst is a sulfur-containing catalyst.

2. The storage yellowing prevention agent for nylon and its blended fabrics according to claim 1, characterized in that: Includes the following components in percentage by mass: 20-40% polymerization monomer, 0.5-20% catalyst, 1-5% organic amine compound, 1-5% organic solvent, 0.5-2% pH regulator and the balance water.

3. The storage yellowing prevention agent for nylon and its blended fabrics according to claim 1, characterized in that: The organic amine compound is selected from one or more of dimethylamine, monoethanolamine, diethylamine and triethanolamine; the organic solvent is selected from one or both of isopropanol and diethylene glycol; the pH regulator is selected from one or more of ammonia water and citric acid.

4. The storage yellowing prevention agent for nylon and its blended fabrics according to claim 1, characterized in that: The sulfur-containing catalyst is selected from one or more of sulfates, sulfites, persulfates and concentrated sulfuric acid.

5. The storage yellowing prevention agent for nylon and its blended fabrics according to claim 4, characterized in that: The sulfate is potassium sulfate; the sulfite is sodium bisulfite; and the persulfate is ammonium persulfate.

6. The storage yellowing prevention agent for nylon and its blended fabrics according to claim 1, characterized in that: The polymerizable monomer is selected from acrylic acid polymerizable monomers or acrylamide polymerizable monomers. The acrylic acid polymerizable monomer is acrylic acid, and the acrylamide polymerizable monomer is 2-acrylamide-2-methylpropanesulfonic acid and / or acrylamide.

7. The storage yellowing prevention agent for nylon and its blended fabrics according to claim 1, characterized in that: Also included is a surfactant; the surfactant is selected from alcohol ether carboxylates.

8. The method for preparing the storage yellowing prevention agent for nylon and its blended fabrics according to any one of claims 1 to 7, characterized in that: The following steps are involved: In the presence of a catalyst, the polymerization monomer is polymerized in water, the system after the polymerization reaction is cooled to 20-60°C, and then an organic amine compound is added for neutralization reaction, and a pH regulator is used to adjust the pH value of the product to 2-7 to obtain an organic polymer with a sulfonic acid side chain, which is purified by an organic solvent to obtain a storage yellowing inhibitor for nylon and its blended fabrics.

9. The preparation method according to claim 8, characterized in that: The polymerization reaction temperature is 95-110° C. and the reaction time is 4-6 hours.

10. Use of the anti-yellowing agent for nylon and its blended fabrics according to any one of claims 1 to 7 or the anti-yellowing agent for nylon and its blended fabrics prepared by the preparation method according to any one of claims 8 to 9 in fabric treatment, characterized in that: The dosage of the nylon and its blended fabric storage yellowing prevention agent is 10-40g / L.

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