Fabric printing and dyeing crosslinking agent and preparation method thereof

Abstract

The present application relates to the technical field of textile auxiliaries, and specifically discloses a fabric printing and dyeing crosslinking agent and a preparation method thereof. The fabric printing and dyeing crosslinking agent comprises the following raw materials: polycarboxylic acid, ethylene oxide, maleic anhydride, a catalyst, a silane coupling agent, and 2-hydroxypropyltrimethylammonium chloride. The raw materials selected in the present application are simple, and the prepared fabric printing and dyeing crosslinking agent can achieve a wrinkle-free effect after being used for fabric finishing without adversely affecting the wash fastness and strength of the fabric. The preparation method comprises: mixing polycarboxylic acid, ethylene oxide, and maleic anhydride, adding a catalyst to react to obtain a reaction product; adding 2-hydroxypropyltrimethylammonium chloride to the reaction product, stirring and mixing, and then adding a silane coupling agent and continuing to stir and mix to obtain the desired fabric printing and dyeing crosslinking agent. The preparation method of the present application is simple, has mild preparation conditions, is safe and environmentally friendly, and is suitable for industrial production.

Description

Technical Field

[0001] The present application relates to the technical field of textile auxiliaries, and more specifically, to a fabric printing and dyeing crosslinking agent and a preparation method thereof. Background Art

[0002] Cellulose fibers are easily ionized under neutral or slightly alkaline conditions, imparting a negative charge to the fiber surface. Reactive dyes are anionic dyes with relatively low molecular weights and limited substantivity to fibers. This repulsive force between the dye and the fiber hinders dye uptake. Crosslinking agents can be grafted onto the fibers to lower the Zeat potential of the fiber surface, allowing the dye to more easily adhere to the fibers, thereby improving the fixation rate of the reactive dye. Furthermore, cellulose fabrics often require post-finishing to impart special properties such as water and oil repellency, antibacterial and antiviral properties, moisture absorption and quick-drying properties, wrinkle resistance, and UV resistance. Fabrics with these special properties experience varying degrees of wear after washing. To enhance the wash durability of these special properties, crosslinking agents are used to strengthen the bond between the special finishing agent and the fabric fibers.

[0003] Polycarboxylic acid finishing agents are a type of formaldehyde-free finishing agent. They achieve crosslinking by utilizing an esterification reaction between carboxyl groups and hydroxyl groups on cellulose fibers under the action of a catalyst. In related art, polycarboxylic acid crosslinking agents are often used for wrinkle-resistant finishing of fabrics, imparting a wrinkle-free, iron-free finish. However, polycarboxylic acids are often used as catalysts, significantly reducing the wash fastness and strength retention of fabrics after treatment. Based on this, the present application provides a fabric printing and dyeing crosslinking agent and a method for preparing the same. Summary of the Invention

[0004] In order to enhance the finishing effect of polycarboxylic acid crosslinking agents and improve the wash fastness and strength retention rate of treated fabrics, the present application provides a fabric printing and dyeing crosslinking agent and a preparation method thereof.

[0005] In the first aspect, the present application provides a fabric printing and dyeing crosslinking agent, which adopts the following technical solution:

[0006] A fabric printing and dyeing crosslinking agent comprises the following raw materials in parts by weight: 18-25 parts of polycarboxylic acid, 5-12 parts of ethylene oxide, 3-7 parts of maleic anhydride, 0.5-1 part of a catalyst, 1-3 parts of a silane coupling agent, and 3-5 parts of 2-hydroxypropyltrimethylammonium chloride.

[0007] Preferably, the fabric printing and dyeing crosslinking agent comprises the following raw materials in parts by weight: 20-24 parts of polycarboxylic acid, 6-10 parts of ethylene oxide, 4-6 parts of maleic anhydride, 0.6-0.8 parts of catalyst, 1.5-2.5 parts of silane coupling agent, and 3.5-4.5 parts of 2-hydroxypropyltrimethylammonium chloride.

[0008] Preferably, the fabric printing and dyeing crosslinking agent comprises the following raw materials in parts by weight: 22 parts of polycarboxylic acid, 8 parts of ethylene oxide, 5 parts of maleic anhydride, 0.7 parts of catalyst, 2 parts of silane coupling agent, and 4 parts of 2-hydroxypropyltrimethylammonium chloride.

[0009] By adopting the above technical solution, the raw materials used in this application are simple and the proportions are scientific and rigorous. The prepared fabric printing and dyeing cross-linking agent can achieve the effect of no-ironing and anti-wrinkle after being used for fabric finishing, and will not cause adverse effects on the wash fastness and strength of the fabric.

[0010] Preferably, the polycarboxylic acid comprises butanetetracarboxylic acid, citric acid and adipic acid in a mass ratio of 10:4-5:1.

[0011] By adopting the above technical solution, the polycarboxylic acid is selected as a compound of butanetetracarboxylic acid, citric acid and adipic acid, which can improve the yellowing resistance and washability of the fabric while ensuring the wrinkle-free effect.

[0012] Preferably, the catalyst is prepared by the following method:

[0013] Aluminum isopropoxide is added to water and stirred, and then ferulic acid and boric acid are added and stirred to react to obtain a mixed system;

[0014] The mixed system is allowed to stand, centrifuged, dried, and crushed to obtain the desired catalyst.

[0015] Preferably, the mass ratio of the aluminum isopropoxide, water, ferulic acid and boric acid is 3-5:10:1-2:1-2.

[0016] Preferably, aluminum isopropoxide is added to water at 60-70° C., stirred at a speed of 400-500 r / min for 1-3 hours, then cooled to room temperature, and ferulic acid and boric acid are added while stirring at a speed of 100-200 r / min and stirred for 1-2 hours to obtain a mixed system.

[0017] By adopting the above technical solution, the present application hydrolyzes aluminum isopropoxide and then adds ferulic acid and boric acid to react to prepare a catalyst. The obtained catalyst is used for polycarboxylic acid catalysis, has high catalytic efficiency, is safe and environmentally friendly, and will not cause adverse effects on subsequent finishing of fabrics.

[0018] Preferably, the silane coupling agent comprises aminopropyltrimethoxysilane and γ-methacryloxypropyltrialkoxysilane in a mass ratio of 1:3-5.

[0019] By adopting the above technical solution, the silane coupling agent is a compound of aminopropyltrimethoxysilane and γ-methacryloxypropyltrialkoxysilane, which can further improve the finishing effect of the obtained cross-linking agent and improve the wash fastness and strength retention rate of the finished fabric.

[0020] In a second aspect, the present application also provides a method for preparing a fabric printing and dyeing crosslinking agent, which adopts the following technical solution:

[0021] A method for preparing a fabric printing and dyeing crosslinking agent comprises the following steps:

[0022] S1. Weigh the raw materials polycarboxylic acid, ethylene oxide, maleic anhydride, catalyst, silane coupling agent, and 2-hydroxypropyltrimethylammonium chloride in parts by weight and set aside;

[0023] S2, mixing polycarboxylic acid, ethylene oxide and maleic anhydride, adding a catalyst to react to obtain a reaction product;

[0024] S3: adding 2-hydroxypropyltrimethylammonium chloride to the reaction product, stirring and mixing, and then adding a silane coupling agent and continuing to stir and mix to obtain the desired fabric printing and dyeing crosslinking agent.

[0025] By adopting the above technical solution, polycarboxylic acid, ethylene oxide and maleic anhydride are mixed, a catalyst is added for reaction, and then 2-hydroxypropyltrimethylammonium chloride and a silane coupling agent are added and stirred and mixed; the resulting crosslinking agent is used for fabric treatment, which can give the fabric a wrinkle-free effect without causing adverse effects on the wash fastness and strength of the fabric; the preparation method of the present application is simple, the preparation conditions are mild, it is safe and environmentally friendly, and it is suitable for industrial production.

[0026] In summary, this application has the following beneficial effects:

[0027] The raw materials used in this application are simple and the proportions are scientific and rigorous. The prepared fabric printing and dyeing cross-linking agent can achieve the effect of no-ironing and anti-wrinkle after being used for fabric finishing, and will not cause adverse effects on the wash fastness and strength of the fabric.

[0028] The present invention prepares a catalyst by hydrolyzing aluminum isopropoxide and then adding ferulic acid and boric acid to react. The obtained catalyst is used for polycarboxylic acid catalysis, has high catalytic efficiency, is safe and environmentally friendly, and will not cause adverse effects on subsequent finishing of fabrics. DETAILED DESCRIPTION

[0029] The present application will be further explained below with reference to specific embodiments.

[0030] Preparation Examples 1-3 and Comparative Preparation Examples 1-2 provide methods for preparing the catalysts.

[0031] Preparation Example 1

[0032] The catalyst was prepared by the following method:

[0033] Aluminum isopropoxide was added to water at 60°C, stirred at 400 r / min for 3 hours, then cooled to room temperature, and ferulic acid and boric acid were added at 100 r / min while stirring for 2 hours to obtain a mixed system, wherein the mass ratio of aluminum isopropoxide, water, ferulic acid, and boric acid was 3:10:1:2;

[0034] The mixed system was allowed to stand for 1 hour, centrifuged at 800 r / min for 15 minutes, then placed in a vacuum drying oven at 100° C. and dried for 1 hour. Finally, the mixture was crushed to a particle size of 1 μm to obtain the desired catalyst.

[0035] Preparation Example 2

[0036] The catalyst was prepared by the following method:

[0037] Aluminum isopropoxide was added to water at 65°C, stirred at 450 r / min for 2 h, cooled to room temperature, and ferulic acid and boric acid were added at 150 r / min while stirring for 1.5 h to obtain a mixed system, wherein the mass ratio of aluminum isopropoxide, water, ferulic acid, and boric acid was 4:10:1.5:1.5;

[0038] The mixed system was allowed to stand for 3 hours, centrifuged at 900 r / min for 12 minutes, then placed in a vacuum drying oven at 110° C. and dried for 0.8 hours. Finally, the mixture was crushed to a particle size of 3 μm to obtain the desired catalyst.

[0039] Preparation Example 3

[0040] The catalyst was prepared by the following method:

[0041] Aluminum isopropoxide was added to water at 70°C, stirred at 500 r / min for 1 hour, then cooled to room temperature, and ferulic acid and boric acid were added at 200 r / min while stirring for 1 hour to obtain a mixed system, wherein the mass ratio of aluminum isopropoxide, water, ferulic acid, and boric acid was 5:10:2:1;

[0042] The mixed system was allowed to stand for 5 hours, centrifuged at a speed of 1000 r / min for 10 minutes, then placed in a vacuum drying oven at 120° C. and dried for 0.5 hours. Finally, the mixture was crushed to a particle size of 5 μm to obtain the desired catalyst.

[0043] Comparative Preparation Example 1

[0044] Comparative Preparation Example 1 is the same as Preparation Example 1, except that ferulic acid is replaced by boric acid.

[0045] Comparative Preparation Example 2

[0046] Comparative Preparation Example 2 is the same as Preparation Example 1, except that the mass of boric acid is replaced by ferulic acid.

[0047] Examples 1-5 and Comparative Examples 1-8 provide fabric printing and dyeing crosslinking agents and preparation methods thereof.

[0048] Example 1

[0049] The present application proposes a fabric printing and dyeing crosslinking agent, comprising the following raw materials in parts by weight: 18 parts of polycarboxylic acid, 5 parts of ethylene oxide, 3 parts of maleic anhydride, 0.5 parts of a catalyst, 1 part of a silane coupling agent, and 3 parts of 2-hydroxypropyltrimethylammonium chloride;

[0050] The polycarboxylic acid comprises butanetetracarboxylic acid, citric acid and adipic acid in a mass ratio of 10:4:1; the catalyst is prepared by Preparation Example 1; and the silane coupling agent comprises aminopropyltrimethoxysilane and γ-methacryloxypropyltrialkoxysilane in a mass ratio of 1:3.

[0051] The present application also proposes a method for preparing a fabric printing and dyeing crosslinking agent, comprising the following steps:

[0052] S1. Weigh the raw materials polycarboxylic acid, ethylene oxide, maleic anhydride, catalyst, silane coupling agent, and 2-hydroxypropyltrimethylammonium chloride in parts by weight and set aside;

[0053] S2. Control the stirring speed to 350 r / min and the mixing temperature to 50° C., stir and mix the polycarboxylic acid, ethylene oxide and maleic anhydride for 30 minutes, then keep the temperature and add the catalyst and continue stirring and reacting for 2 hours to obtain a reaction product;

[0054] S3: adding 2-hydroxypropyltrimethylammonium chloride to the reaction product, stirring and mixing for 10 minutes, and then adding a silane coupling agent and continuing to stir and mix for 10 minutes to obtain the desired fabric printing and dyeing crosslinking agent.

[0055] Example 2

[0056] The present application proposes a fabric printing and dyeing crosslinking agent, comprising the following raw materials in parts by weight: 20 parts of polycarboxylic acid, 6 parts of ethylene oxide, 4 parts of maleic anhydride, 0.6 parts of a catalyst, 1.5 parts of a silane coupling agent, and 3.5 parts of 2-hydroxypropyltrimethylammonium chloride;

[0057] The polycarboxylic acid comprises butanetetracarboxylic acid, citric acid and adipic acid in a mass ratio of 10:4:1; the catalyst is prepared by Preparation Example 1; and the silane coupling agent comprises aminopropyltrimethoxysilane and γ-methacryloxypropyltrialkoxysilane in a mass ratio of 1:3.

[0058] The present application also proposes a method for preparing a fabric printing and dyeing crosslinking agent, comprising the following steps:

[0059] S1. Weigh the raw materials polycarboxylic acid, ethylene oxide, maleic anhydride, catalyst, silane coupling agent, and 2-hydroxypropyltrimethylammonium chloride in parts by weight and set aside;

[0060] S2. Control the stirring speed to 350 r / min and the mixing temperature to 50° C., stir and mix the polycarboxylic acid, ethylene oxide and maleic anhydride for 30 minutes, then keep the temperature and add the catalyst and continue stirring and reacting for 2 hours to obtain a reaction product;

[0061] S3: adding 2-hydroxypropyltrimethylammonium chloride to the reaction product, stirring and mixing for 10 minutes, and then adding a silane coupling agent and continuing to stir and mix for 10 minutes to obtain the desired fabric printing and dyeing crosslinking agent.

[0062] Example 3

[0063] The present application proposes a fabric printing and dyeing crosslinking agent, comprising the following raw materials in parts by weight: 22 parts of polycarboxylic acid, 8 parts of ethylene oxide, 5 parts of maleic anhydride, 0.7 parts of a catalyst, 2 parts of a silane coupling agent, and 4 parts of 2-hydroxypropyltrimethylammonium chloride;

[0064] The polycarboxylic acid comprises butanetetracarboxylic acid, citric acid and adipic acid in a mass ratio of 10:4.5:1; the catalyst is prepared by Preparation Example 2; and the silane coupling agent comprises aminopropyltrimethoxysilane and γ-methacryloxypropyltrialkoxysilane in a mass ratio of 1:4.

[0065] The present application also proposes a method for preparing a fabric printing and dyeing crosslinking agent, comprising the following steps:

[0066] S1. Weigh the raw materials polycarboxylic acid, ethylene oxide, maleic anhydride, catalyst, silane coupling agent, and 2-hydroxypropyltrimethylammonium chloride in parts by weight and set aside;

[0067] S2. Control the stirring speed to 400 r / min and the mixing temperature to 60° C., stir and mix the polycarboxylic acid, ethylene oxide and maleic anhydride for 25 minutes, then keep the temperature and add the catalyst and continue stirring and reacting for 1.5 hours to obtain a reaction product;

[0068] S3: adding 2-hydroxypropyltrimethylammonium chloride to the reaction product, stirring and mixing for 8 minutes, and then adding a silane coupling agent and continuing to stir and mix for 20 minutes to obtain the desired fabric printing and dyeing crosslinking agent.

[0069] Example 4

[0070] The present application proposes a fabric printing and dyeing crosslinking agent, comprising the following raw materials in parts by weight: 24 parts of polycarboxylic acid, 10 parts of ethylene oxide, 6 parts of maleic anhydride, 0.8 parts of a catalyst, 2.5 parts of a silane coupling agent, and 4.5 parts of 2-hydroxypropyltrimethylammonium chloride;

[0071] The polycarboxylic acid comprises butanetetracarboxylic acid, citric acid and adipic acid in a mass ratio of 10:4.5:1; the catalyst is prepared by Preparation Example 2; and the silane coupling agent comprises aminopropyltrimethoxysilane and γ-methacryloxypropyltrialkoxysilane in a mass ratio of 1:4.

[0072] The present application also proposes a method for preparing a fabric printing and dyeing crosslinking agent, comprising the following steps:

[0073] S1. Weigh the raw materials polycarboxylic acid, ethylene oxide, maleic anhydride, catalyst, silane coupling agent, and 2-hydroxypropyltrimethylammonium chloride in parts by weight and set aside;

[0074] S2. Control the stirring speed to 400 r / min and the mixing temperature to 60° C., stir and mix the polycarboxylic acid, ethylene oxide and maleic anhydride for 25 minutes, then keep the temperature and add the catalyst and continue stirring and reacting for 1.5 hours to obtain a reaction product;

[0075] S3: adding 2-hydroxypropyltrimethylammonium chloride to the reaction product, stirring and mixing for 8 minutes, and then adding a silane coupling agent and continuing to stir and mix for 20 minutes to obtain the desired fabric printing and dyeing crosslinking agent.

[0076] Example 5

[0077] The present application proposes a fabric printing and dyeing crosslinking agent, comprising the following raw materials in parts by weight: 25 parts of polycarboxylic acid, 12 parts of ethylene oxide, 7 parts of maleic anhydride, 1 part of catalyst, 3 parts of silane coupling agent, and 5 parts of 2-hydroxypropyltrimethylammonium chloride;

[0078] The polycarboxylic acid comprises butanetetracarboxylic acid, citric acid and adipic acid in a mass ratio of 10:5:1; the catalyst is prepared by Preparation Example 3; and the silane coupling agent comprises aminopropyltrimethoxysilane and γ-methacryloxypropyltrialkoxysilane in a mass ratio of 1:5.

[0079] The present application also proposes a method for preparing a fabric printing and dyeing crosslinking agent, comprising the following steps:

[0080] S1. Weigh the raw materials polycarboxylic acid, ethylene oxide, maleic anhydride, catalyst, silane coupling agent, and 2-hydroxypropyltrimethylammonium chloride in parts by weight and set aside;

[0081] S2. Control the stirring speed to 450 r / min and the mixing temperature to 70° C., stir and mix the polycarboxylic acid, ethylene oxide and maleic anhydride for 20 minutes, then keep the temperature and add the catalyst and continue stirring and reacting for 1 hour to obtain a reaction product;

[0082] S3: adding 2-hydroxypropyltrimethylammonium chloride to the reaction product, stirring and mixing for 5 minutes, and then adding a silane coupling agent and continuing to stir and mix for 30 minutes to obtain the desired fabric printing and dyeing crosslinking agent.

[0083] Comparative Example 1

[0084] The present application proposes a fabric printing and dyeing crosslinking agent, comprising the following raw materials in parts by weight: 18 parts of polycarboxylic acid, 5 parts of ethylene oxide, 3 parts of maleic anhydride, 0.5 parts of a catalyst, 1 part of a silane coupling agent, and 3 parts of 2-hydroxypropyltrimethylammonium chloride;

[0085] The polycarboxylic acid comprises butanetetracarboxylic acid, citric acid and adipic acid in a mass ratio of 10:4:1; the catalyst is prepared by Comparative Preparation Example 1; and the silane coupling agent comprises aminopropyltrimethoxysilane and γ-methacryloxypropyltrialkoxysilane in a mass ratio of 1:3.

[0086] The present application also proposes a method for preparing a fabric printing and dyeing crosslinking agent, comprising the following steps:

[0087] S1. Weigh the raw materials polycarboxylic acid, ethylene oxide, maleic anhydride, catalyst, silane coupling agent, and 2-hydroxypropyltrimethylammonium chloride in parts by weight and set aside;

[0088] S2. Control the stirring speed to 350 r / min and the mixing temperature to 50° C., stir and mix the polycarboxylic acid, ethylene oxide and maleic anhydride for 30 minutes, then keep the temperature and add the catalyst and continue stirring and reacting for 2 hours to obtain a reaction product;

[0089] S3: adding 2-hydroxypropyltrimethylammonium chloride to the reaction product, stirring and mixing for 10 minutes, and then adding a silane coupling agent and continuing to stir and mix for 10 minutes to obtain the desired fabric printing and dyeing crosslinking agent.

[0090] Comparative Example 2

[0091] The present application proposes a fabric printing and dyeing crosslinking agent, comprising the following raw materials in parts by weight: 18 parts of polycarboxylic acid, 5 parts of ethylene oxide, 3 parts of maleic anhydride, 0.5 parts of a catalyst, 1 part of a silane coupling agent, and 3 parts of 2-hydroxypropyltrimethylammonium chloride;

[0092] The polycarboxylic acid comprises butanetetracarboxylic acid, citric acid and adipic acid in a mass ratio of 10:4:1; the catalyst is prepared by Comparative Preparation Example 2; and the silane coupling agent comprises aminopropyltrimethoxysilane and γ-methacryloxypropyltrialkoxysilane in a mass ratio of 1:3.

[0093] The present application also proposes a method for preparing a fabric printing and dyeing crosslinking agent, comprising the following steps:

[0094] S1. Weigh the raw materials polycarboxylic acid, ethylene oxide, maleic anhydride, catalyst, silane coupling agent, and 2-hydroxypropyltrimethylammonium chloride in parts by weight and set aside;

[0095] S2. Control the stirring speed to 350 r / min and the mixing temperature to 50° C., stir and mix the polycarboxylic acid, ethylene oxide and maleic anhydride for 30 minutes, then keep the temperature and add the catalyst and continue stirring and reacting for 2 hours to obtain a reaction product;

[0096] S3: adding 2-hydroxypropyltrimethylammonium chloride to the reaction product, stirring and mixing for 10 minutes, and then adding a silane coupling agent and continuing to stir and mix for 10 minutes to obtain the desired fabric printing and dyeing crosslinking agent.

[0097] Comparative Example 3

[0098] The present application proposes a fabric printing and dyeing crosslinking agent, comprising the following raw materials in parts by weight: 18 parts of polycarboxylic acid, 5 parts of ethylene oxide, 3 parts of maleic anhydride, 0.5 parts of a catalyst, 1 part of a silane coupling agent, and 3 parts of 2-hydroxypropyltrimethylammonium chloride;

[0099] The polycarboxylic acid comprises butanetetracarboxylic acid and citric acid in a mass ratio of 2:1; the catalyst is prepared by Preparation Example 1; and the silane coupling agent comprises aminopropyltrimethoxysilane and γ-methacryloxypropyltrialkoxysilane in a mass ratio of 1:3.

[0100] The present application also proposes a method for preparing a fabric printing and dyeing crosslinking agent, comprising the following steps:

[0101] S1. Weigh the raw materials polycarboxylic acid, ethylene oxide, maleic anhydride, catalyst, silane coupling agent, and 2-hydroxypropyltrimethylammonium chloride in parts by weight and set aside;

[0102] S2. Control the stirring speed to 350 r / min and the mixing temperature to 50° C., stir and mix the polycarboxylic acid, ethylene oxide and maleic anhydride for 30 minutes, then keep the temperature and add the catalyst and continue stirring and reacting for 2 hours to obtain a reaction product;

[0103] S3: adding 2-hydroxypropyltrimethylammonium chloride to the reaction product, stirring and mixing for 10 minutes, and then adding a silane coupling agent and continuing to stir and mix for 10 minutes to obtain the desired fabric printing and dyeing crosslinking agent.

[0104] Comparative Example 4

[0105] The present application proposes a fabric printing and dyeing crosslinking agent, comprising the following raw materials in parts by weight: 18 parts of polycarboxylic acid, 5 parts of ethylene oxide, 3 parts of maleic anhydride, 0.5 parts of a catalyst, 1 part of a silane coupling agent, and 3 parts of 2-hydroxypropyltrimethylammonium chloride;

[0106] The polycarboxylic acid comprises butanetetracarboxylic acid and adipic acid in a mass ratio of 2:1; the catalyst is prepared by Preparation Example 1; and the silane coupling agent comprises aminopropyltrimethoxysilane and γ-methacryloxypropyltrialkoxysilane in a mass ratio of 1:3.

[0107] The present application also proposes a method for preparing a fabric printing and dyeing crosslinking agent, comprising the following steps:

[0108] S1. Weigh the raw materials polycarboxylic acid, ethylene oxide, maleic anhydride, catalyst, silane coupling agent, and 2-hydroxypropyltrimethylammonium chloride in parts by weight and set aside;

[0109] S2. Control the stirring speed to 350 r / min and the mixing temperature to 50° C., stir and mix the polycarboxylic acid, ethylene oxide and maleic anhydride for 30 minutes, then keep the temperature and add the catalyst and continue stirring and reacting for 2 hours to obtain a reaction product;

[0110] S3: adding 2-hydroxypropyltrimethylammonium chloride to the reaction product, stirring and mixing for 10 minutes, and then adding a silane coupling agent and continuing to stir and mix for 10 minutes to obtain the desired fabric printing and dyeing crosslinking agent.

[0111] Comparative Example 5

[0112] The present application proposes a fabric printing and dyeing crosslinking agent, comprising the following raw materials in parts by weight: 18 parts of polycarboxylic acid, 5 parts of ethylene oxide, 3 parts of maleic anhydride, 0.5 parts of a catalyst, 1 part of a silane coupling agent, and 3 parts of 2-hydroxypropyltrimethylammonium chloride;

[0113] The polycarboxylic acid is butanetetracarboxylic acid; the catalyst is prepared according to Preparation Example 1; and the silane coupling agent comprises aminopropyltrimethoxysilane and γ-methacryloxypropyltrialkoxysilane in a mass ratio of 1:3.

[0114] The present application also proposes a method for preparing a fabric printing and dyeing crosslinking agent, comprising the following steps:

[0115] S1. Weigh the raw materials polycarboxylic acid, ethylene oxide, maleic anhydride, catalyst, silane coupling agent, and 2-hydroxypropyltrimethylammonium chloride in parts by weight and set aside;

[0116] S2. Control the stirring speed to 350 r / min and the mixing temperature to 50° C., stir and mix the polycarboxylic acid, ethylene oxide and maleic anhydride for 30 minutes, then keep the temperature and add the catalyst and continue stirring and reacting for 2 hours to obtain a reaction product;

[0117] S3: adding 2-hydroxypropyltrimethylammonium chloride to the reaction product, stirring and mixing for 10 minutes, and then adding a silane coupling agent and continuing to stir and mix for 10 minutes to obtain the desired fabric printing and dyeing crosslinking agent.

[0118] Comparative Example 6

[0119] The present application proposes a fabric printing and dyeing crosslinking agent, comprising the following raw materials in parts by weight: 18 parts of polycarboxylic acid, 5 parts of ethylene oxide, 3 parts of maleic anhydride, 0.5 parts of a catalyst, 1 part of a silane coupling agent, and 3 parts of 2-hydroxypropyltrimethylammonium chloride;

[0120] The polycarboxylic acid comprises butanetetracarboxylic acid, citric acid and adipic acid in a mass ratio of 10:4:1; the catalyst is prepared by Preparation Example 1; and the silane coupling agent comprises aminopropyltrimethoxysilane and γ-methacryloxypropyltrialkoxysilane in a mass ratio of 3:1.

[0121] The present application also proposes a method for preparing a fabric printing and dyeing crosslinking agent, comprising the following steps:

[0122] S1. Weigh the raw materials polycarboxylic acid, ethylene oxide, maleic anhydride, catalyst, silane coupling agent, and 2-hydroxypropyltrimethylammonium chloride in parts by weight and set aside;

[0123] S2. Control the stirring speed to 350 r / min and the mixing temperature to 50° C., stir and mix the polycarboxylic acid, ethylene oxide and maleic anhydride for 30 minutes, then keep the temperature and add the catalyst and continue stirring and reacting for 2 hours to obtain a reaction product;

[0124] S3: adding 2-hydroxypropyltrimethylammonium chloride to the reaction product, stirring and mixing for 10 minutes, and then adding a silane coupling agent and continuing to stir and mix for 10 minutes to obtain the desired fabric printing and dyeing crosslinking agent.

[0125] Comparative Example 7

[0126] The present application proposes a fabric printing and dyeing crosslinking agent, comprising the following raw materials in parts by weight: 18 parts of polycarboxylic acid, 5 parts of ethylene oxide, 3 parts of maleic anhydride, 0.5 parts of a catalyst, 1 part of a silane coupling agent, and 3 parts of 2-hydroxypropyltrimethylammonium chloride;

[0127] The polycarboxylic acid comprises butanetetracarboxylic acid, citric acid and adipic acid in a mass ratio of 10:4:1; the catalyst is prepared according to Preparation Example 1; and the silane coupling agent is aminopropyltrimethoxysilane.

[0128] The present application also proposes a method for preparing a fabric printing and dyeing crosslinking agent, comprising the following steps:

[0129] S1. Weigh the raw materials polycarboxylic acid, ethylene oxide, maleic anhydride, catalyst, silane coupling agent, and 2-hydroxypropyltrimethylammonium chloride in parts by weight and set aside;

[0130] S2. Control the stirring speed to 350 r / min and the mixing temperature to 50° C., stir and mix the polycarboxylic acid, ethylene oxide and maleic anhydride for 30 minutes, then keep the temperature and add the catalyst and continue stirring and reacting for 2 hours to obtain a reaction product;

[0131] S3: adding 2-hydroxypropyltrimethylammonium chloride to the reaction product, stirring and mixing for 10 minutes, and then adding a silane coupling agent and continuing to stir and mix for 10 minutes to obtain the desired fabric printing and dyeing crosslinking agent.

[0132] Comparative Example 8

[0133] The present application proposes a fabric printing and dyeing crosslinking agent, comprising the following raw materials in parts by weight: 18 parts of polycarboxylic acid, 5 parts of ethylene oxide, 3 parts of maleic anhydride, 0.5 parts of a catalyst, 1 part of a silane coupling agent, and 3 parts of 2-hydroxypropyltrimethylammonium chloride;

[0134] The polycarboxylic acid comprises butanetetracarboxylic acid, citric acid and adipic acid in a mass ratio of 10:4:1; the catalyst is prepared according to Preparation Example 1; and the silane coupling agent is γ-methacryloxypropyltrialkoxysilane.

[0135] The present application also proposes a method for preparing a fabric printing and dyeing crosslinking agent, comprising the following steps:

[0136] S1. Weigh the raw materials polycarboxylic acid, ethylene oxide, maleic anhydride, catalyst, silane coupling agent, and 2-hydroxypropyltrimethylammonium chloride in parts by weight and set aside;

[0137] S2. Control the stirring speed to 350 r / min and the mixing temperature to 50° C., stir and mix the polycarboxylic acid, ethylene oxide and maleic anhydride for 30 minutes, then keep the temperature and add the catalyst and continue stirring and reacting for 2 hours to obtain a reaction product;

[0138] S3: adding 2-hydroxypropyltrimethylammonium chloride to the reaction product, stirring and mixing for 10 minutes, and then adding a silane coupling agent and continuing to stir and mix for 10 minutes to obtain the desired fabric printing and dyeing crosslinking agent.

[0139] Performance Testing

[0140] The comprehensive performance of the fabric printing and dyeing crosslinking agent in Examples 1-5 and Comparative Examples 1-8 of the present application was tested according to the following test method;

[0141] Test method: The fabric printing and dyeing crosslinking agents in Examples 1-5 and Comparative Examples 1-8 were added to a padding tank respectively, and the cotton textiles were impregnated, and then pressed by a uniform pressing roller to a moisture content of 35%, and then dried at 125°C to obtain samples.

[0142] Strength retention rate: tested according to the method of GB / T 3923.1-2013;

[0143] Wrinkle recovery angle (snap back): tested according to the method of GB / T 3819-1997;

[0144] Washing fastness: tested according to the method of GB / T 3921-2008;

[0145] The test results are shown in Table 1 below.

[0146] Table 1:

[0147]

[0148] It can be seen from the data shown in Table 1 that the performance of the fabric printing and dyeing crosslinking agents prepared in Examples 1-5 of the present application is significantly improved compared with the comprehensive performance of the fabric printing and dyeing crosslinking agents in Comparative Examples 1-8.

[0149] Compared with Example 1, the catalyst in Comparative Examples 1-2 is the catalyst in Comparative Preparation Examples 1-2; the polycarboxylic acid in Comparative Example 3 includes butanetetracarboxylic acid and citric acid in a mass ratio of 2:1; the polycarboxylic acid in Comparative Example 4 includes butanetetracarboxylic acid and adipic acid in a mass ratio of 2:1; the polycarboxylic acid in Comparative Example 5 is butanetetracarboxylic acid; the silane coupling agent in Comparative Example 6 includes aminopropyltrimethoxysilane and γ-methacryloxypropyltrialkoxysilane in a mass ratio of 3:1; the silane coupling agent in Comparative Example 7 is aminopropyltrimethoxysilane; and the silane coupling agent in Comparative Example 8 is γ-methacryloxypropyltrialkoxysilane; the test results show that the comprehensive performance of the fabric printing and dyeing crosslinking agent prepared in Example 1 of the present application is significantly improved compared with Comparative Examples 1-8.

[0150] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A fabric printing and dyeing cross-linking agent, characterized in that The invention comprises the following raw materials in parts by weight: 18-25 parts of polycarboxylic acid, 5-12 parts of ethylene oxide, 3-7 parts of maleic anhydride, 0.5-1 part of catalyst, 1-3 parts of silane coupling agent, and 3-5 parts of 2-hydroxypropyltrimethylammonium chloride; The polycarboxylic acid comprises butane tetracarboxylic acid, citric acid and adipic acid in a mass ratio of 10:4-5:1; The catalyst is prepared by the following method: Aluminum isopropoxide is added to water and stirred, and then ferulic acid and boric acid are added and stirred to react to obtain a mixed system; The mixed system is allowed to stand, then centrifuged, dried, and crushed to obtain the desired catalyst; The silane coupling agent comprises aminopropyltrimethoxysilane and gamma-methacryloxypropyltrialkoxysilane in a mass ratio of 1:3-5.

2. A fabric printing and dyeing cross-linking agent according to claim 1, characterized in that, The invention comprises the following raw materials in parts by weight: 20-24 parts of polycarboxylic acid, 6-10 parts of ethylene oxide, 4-6 parts of maleic anhydride, 0.6-0.8 parts of catalyst, 1.5-2.5 parts of silane coupling agent and 3.5-4.5 parts of 2-hydroxypropyltrimethylammonium chloride.

3. A fabric printing and dyeing cross-linking agent according to claim 1, characterized in that, The invention comprises the following raw materials in parts by weight: 22 parts of polycarboxylic acid, 8 parts of ethylene oxide, 5 parts of maleic anhydride, 0.7 parts of catalyst, 2 parts of silane coupling agent and 4 parts of 2-hydroxypropyltrimethylammonium chloride.

4. A fabric printing and dyeing cross-linking agent according to claim 1, characterized in that, The mass ratio of the aluminum isopropoxide, water, ferulic acid and boric acid is 3-5:10:1-2:1-2.

5. A fabric printing and dyeing cross-linking agent according to claim 1, characterized in that, Aluminum isopropoxide is added to water at 60-70° C., stirred at a speed of 400-500 r / min for 1-3 hours, then cooled to room temperature, and ferulic acid and boric acid are added while stirring at a speed of 100-200 r / min, and stirred for reaction for 1-2 hours to obtain a mixed system.

6. A method for preparing a textile printing and dyeing cross-linking agent according to any one of claims 1 to 5, characterized in that: The method comprises the following preparation steps: S1. Weigh the raw materials polycarboxylic acid, ethylene oxide, maleic anhydride, catalyst, silane coupling agent, and 2-hydroxypropyltrimethylammonium chloride in parts by weight and set aside; S2, mixing polycarboxylic acid, ethylene oxide and maleic anhydride, adding a catalyst to react to obtain a reaction product; S3: adding 2-hydroxypropyltrimethylammonium chloride to the reaction product, stirring and mixing, and then adding a silane coupling agent and continuing to stir and mix to obtain the desired fabric printing and dyeing crosslinking agent.

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