Cationic moisture absorption and sweat releasing finishing agent and application thereof

Abstract

The invention discloses a cationic moisture-absorbing and sweat-releasing finishing agent and application thereof.The cationic moisture-absorbing and sweat-releasing finishing agent has the following reaction structure: the cationic moisture-absorbing and sweat-releasing finishing agent can be more firmly combined on the surfaces of fibers through electrostatic adsorption, and more importantly, the cationic moisture-absorbing and sweat-releasing finishing agent can be subjected to a cross-linking reaction with the fibers or the cationic moisture-absorbing and sweat-releasing finishing agent; and a firm net-shaped film is formed, so that extremely excellent washing resistance is obtained, the compatibility with common disperse dyes (non-ionic dyes) for dyeing is extremely good, moisture absorption, sweat releasing and dyeing can be performed in one bath, the technological process is greatly shortened, the consumption of energy sources such as water, electricity and steam is reduced, and the environment-friendly trend of energy conservation and consumption reduction is met. And meanwhile, the quality problem possibly caused by sub-bath processing is avoided.

Description

Technical Field

[0001] This invention relates to the field of finishing agents, and in particular to a cationic moisture-wicking finishing agent and its application. Background Technology

[0002] Multifunctional finishing agents are chemical preparations that impart special functions to fabrics by altering their surface properties. However, some inherent drawbacks of existing products include: 1. Insufficient durability: Especially early finishing agents that worked through hydrophilic coatings, whose hydrophilic segments are physically adsorbed onto the fiber surface, are easily detached after repeated washing or friction, leading to rapid functional decay; 2. Impact on fabric feel: Forming a coating on the fiber surface may make the fabric stiff and rough, sacrificing the softness and drape of textiles; 3. Poor compatibility with dyes and auxiliaries: Anionic finishing agents easily react with commonly used cationic softeners and fixing agents in textile processing, producing precipitation, leading to problems such as dye spots and uneven coloring, limiting their flexible application in dyeing and finishing processes. In view of the above, it is necessary to improve the existing finishing agents to meet the current needs of finishing agent use. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides a cationic moisture-wicking finishing agent, the reaction structure of which is as follows: .

[0004] A method for preparing a cationic moisture-wicking finishing agent includes the following steps: S1: Add 91-95 parts of epichlorohydrin and 210-230 parts of isopropanol to a sealed reactor. Start stirring at 0-5℃. Slowly add 137-157 parts of 33% trimethylamine aqueous solution to the reactor, controlling the temperature below 10℃. After the addition is complete, react at 10℃ for 2-3 hours, then raise the temperature to room temperature and react for 7-9 hours. After filtration and vacuum distillation, dissolve in a minimum amount of isopropanol and set aside for later use. S2: Take another sealed reactor, add 300-390 parts of ethylenediamine liquid and start stirring. Cool down to below 0°C in an ice-water bath. Dilute 92-93 parts of propionyl chloride with an appropriate amount of tetrahydrofuran and slowly add it dropwise to the above reactor while controlling the temperature at 0-5°C. After the addition is complete, react at below 0°C for 2 hours, and then raise the temperature to room temperature and react for 3-5 hours. S3: Add an appropriate amount of isopropanol to the reactor in S2, stir evenly, and heat to 55-65℃. Add the product prepared in S1 dropwise. After the addition is complete, react at 70-80℃ for 5-7 hours. After removing the solvent by vacuum distillation, a pale yellow product is obtained.

[0005] As a further supplement to this technical solution, the sealed reactor includes a stirrer, a thermometer, a dropping funnel, and a reflux condenser.

[0006] As a further supplement to this technical solution, the components are: 92.5 parts epichlorohydrin, 220 parts isopropanol, 147 parts of 33% trimethylamine aqueous solution, 390 parts ethylenediamine liquid, and 92.5 parts propionyl chloride.

[0007] A method for preparing a cationic moisture-wicking finishing agent; the finished agent prepared is used to treat fiber fabrics.

[0008] Its beneficial effects lie in the fact that cationic finishing agents can more firmly bind to the fiber surface through electrostatic adsorption. More importantly, they can undergo cross-linking reactions with the fiber or themselves to form a strong network film, thereby achieving extremely excellent wash resistance. Furthermore, it has excellent compatibility with commonly used disperse dyes (non-ionic), allowing for simultaneous moisture wicking and dyeing in the same bath. This significantly shortens the process, saves energy consumption such as water, electricity, and steam, aligning with the environmental trend of energy conservation and emission reduction, while avoiding quality problems that may arise from separate bath processing. Fiber fabrics treated with the moisture-wicking multifunctional finishing agent of this invention exhibit excellent moisture wicking properties, durable washability, and a soft, fluffy hand feel, overcoming the problem of commercially available moisture-wicking finishing agents failing to balance hydrophilicity and hand feel. Experimental data indicates that the moisture-wicking multifunctional finishing agent of this invention is superior to anionic moisture-wicking hydrophilic finishing agents, showing broad market prospects. Detailed Implementation

[0009] To facilitate a clearer understanding of this technical solution by those skilled in the art, the technical solution of the present invention will be described in detail below: Example 1: S1: Add 92.5 parts of epichlorohydrin and 220 parts of isopropanol to a sealed reactor equipped with a stirrer, thermometer, dropping funnel, and reflux condenser. Start stirring at 0-5℃ and slowly add 147 parts of 33% trimethylamine aqueous solution to the reactor, controlling the temperature below 10℃. After the addition is complete, react at 10℃ for 2 hours, then raise the temperature to room temperature and react for 8 hours. After filtration and vacuum distillation, dissolve the solution in a minimum amount of isopropanol and set aside for later use.

[0010] S2: In a separate reactor equipped with a stirrer, dropping funnel, thermometer, and reflux condenser, add 390 parts of ethylenediamine liquid (excess) and start stirring. Cool the reactor to below 0°C using an ice-water bath. Dilute 92.5 parts of propionyl chloride with an appropriate amount of tetrahydrofuran and slowly add it dropwise to the reactor while controlling the temperature at 0-5°C. After the addition is complete, react the mixture at below 0°C for 2 hours, and then raise the temperature to room temperature for 4 hours.

[0011] S3: Add an appropriate amount of isopropanol to the reactor in S2, stir until homogeneous, and then heat to 65°C. Add the product prepared in S1 dropwise. After the addition is complete, react at 70-80°C for 6 hours. After removing the solvent by vacuum distillation, a pale yellow product is obtained.

[0012] Example 2: S1: Add 92.5 parts of epichlorohydrin and 220 parts of isopropanol to a sealed reactor equipped with a stirrer, thermometer, dropping funnel, and reflux condenser. Start stirring at 0-5℃ and slowly add 147 parts of 33% trimethylamine aqueous solution to the reactor, controlling the temperature below 10℃. After the addition is complete, react at 10℃ for 2 hours, then raise the temperature to room temperature and react for 8 hours. After filtration and vacuum distillation, dissolve the solution in a minimum amount of isopropanol and set aside for later use.

[0013] S2: In a separate reactor equipped with a stirrer, dropping funnel, thermometer, and reflux condenser, add 300 parts of ethylenediamine liquid (excess) and start stirring. Cool the reactor to below 0°C using an ice-water bath. Dilute 92.5 parts of propionyl chloride with an appropriate amount of tetrahydrofuran and slowly add it dropwise to the reactor while controlling the temperature at 0-5°C. After the addition is complete, react the mixture at below 0°C for 2 hours, and then raise the temperature to room temperature for 4 hours.

[0014] S3: Add an appropriate amount of isopropanol to the reactor in S2, stir until homogeneous, and then heat to 65°C. Add the product prepared in S1 dropwise. After the addition is complete, react at 70-80°C for 6 hours. After removing the solvent by vacuum distillation, a pale yellow product is obtained.

[0015] Example 3: S1: Add 92.5 parts of epichlorohydrin and 220 parts of isopropanol to a sealed reactor equipped with a stirrer, thermometer, dropping funnel, and reflux condenser. Start stirring at 0-5℃ and slowly add 147 parts of 33% trimethylamine aqueous solution to the reactor, controlling the temperature below 10℃. After the addition is complete, react at 10℃ for 2 hours, then raise the temperature to room temperature and react for 8 hours. After filtration and vacuum distillation, dissolve the solution in a minimum amount of isopropanol and set aside for later use.

[0016] S2: In a separate reactor equipped with a stirrer, dropping funnel, thermometer, and reflux condenser, add 300 parts of ethylenediamine liquid (excess) and start stirring. Cool the reactor to below 0°C using an ice-water bath. Dilute 85 parts of propionyl chloride with an appropriate amount of tetrahydrofuran and slowly add it dropwise to the reactor while controlling the temperature at 0-5°C. After the addition is complete, react the mixture at below 0°C for 2 hours, and then raise the temperature to room temperature for 4 hours.

[0017] S3: Add an appropriate amount of isopropanol to the reactor in S2, stir until homogeneous, and then heat to 65°C. Add the product prepared in S1 dropwise. After the addition is complete, react at 70-80°C for 6 hours. After removing the solvent by vacuum distillation, a pale yellow product is obtained.

[0018] Comparative Example 1: Competitors in the market for moisture-wicking finishing agents (Ciba moisture-wicking finishing agent purchased from Shanghai Lvtong Materials Co., Ltd.); Comparative Example 2: Competitors in the market for moisture-wicking finishing agents (Crude Oil Gx-8118 purchased from Guangdong Xiangtao High-Tech Materials Technology Co., Ltd.); Performance testing The finishing agents of Examples 1-3 and Comparative Examples 1-2 were used to treat nylon-spandex fiber fabrics respectively. The experimental process for the treatment was as follows: Padding process: two dips and two nips → drying (105℃) → heat setting (170℃×30s) → test. Impregnation process: impregnation (95℃×30min) → dehydration and drying (105℃) → heat setting (145℃×30s) → test. The treated fiber fabrics were tested for properties such as moisture absorption and quick-drying hydrophilicity, washability, and soft and fluffy feel.

[0019] (1) Moisture wicking performance test: Refer to the method of GB / T21655.1-2008 "Evaluation of the moisture wicking and quick-drying properties of textiles". Principle: The ability of fabric to absorb liquid sweat (moisture wicking) is characterized by the water droplet diffusion time.

[0020] The specific test results are shown in Tables 1 and 2; Table 1. Water diffusion time / s (impregnation process) Table 2. Water droplet diffusion time / s (impregnation process - black nylon-spandex knitted fabric) (2) Quick-drying performance test: refer to the method of GB / T21655.1-2008 "Evaluation of the moisture absorption and quick-drying properties of textiles".

[0021] Principle: The quick-drying property (wicking properties) of a fabric in a liquid sweat state is characterized by the residual moisture rate after evaporation under specified air conditions. The lower the residual moisture rate, the better the quick-drying performance.

[0022] The specific method is as follows: According to the method for determining the rate and time of water evaporation in section 8.3, the amount of water evaporation is tested at specific times of 10 min, 20 min, 30 min, 40 min, 50 min, and 60 min. Based on the weight ratio of the fabric before and after evaporation, the residual moisture rate in the fabric is calculated.

[0023] The specific test results are shown in Table 3: Table 3 Results of Moisture Residue Test (3) Hand feel test: The touch feel is rated by at least 5 experienced people, with a score of 1 to 5 representing the comparison results, where 5 points is the best and 1 point is the worst.

[0024] The specific test results are shown in Table 4.

[0025] Table 4 Comparison of Hand Feel Performance Data The above technical solutions only embody the preferred technical solutions of the present invention. Any modifications that may be made by those skilled in the art to certain parts thereof embody the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A cationic moisture wicking and perspiration management finish, characterized in that, The reaction structure is as follows: 。 2. A process for preparing a cationic moisture wicking and perspiration management finish as claimed in claim 1, wherein, It comprises the following steps: S1: add 91-95 parts of epichlorohydrin, 210-230 parts of isopropyl alcohol in a sealed reactor, start stirring at 0-5℃, slowly add 137-157 parts of 33% trimethylamine aqueous solution into the reactor, control the temperature below 10℃, after the addition is completed, react at 10℃ for 2-3h, then react at room temperature for 7-9h, after filtration, vacuum distillation, dissolve in a minimum amount of isopropyl alcohol, and stand aside for use; S2: take another sealed reactor, add 300-390 parts of ethylenediamine liquid and start stirring, cool to below 0℃ with ice water bath, slowly add 92-93 parts of propionyl chloride diluted with appropriate amount of tetrahydrofuran into the reactor and control the temperature at 0-5℃, after the addition is completed, react at 0℃ for 2h, then react at room temperature for 3-5h; S3: add appropriate amount of isopropyl alcohol into the reactor in S2, stir uniformly, then heat to 55-65℃, add the product prepared in S1, after the addition is completed, react at 70-80℃ for 5-7h, remove the solvent by vacuum distillation, and obtain light yellow product.

3. A process for the preparation of a cationic moisture wicking and sweat- repelling finish according to claim 2, characterized in that, The sealed reactor comprises stirring, thermometer, dropping funnel, reflux condenser.

4. A process for preparing a cationic moisture wicking and perspiration management finish as claimed in claim 1, wherein, The epichlorohydrin is 92.5 parts, the isopropyl alcohol is 220 parts, the 33% trimethylamine aqueous solution is 147 parts, the ethylenediamine liquid is 390 parts, and the propionyl chloride is 92.5 parts.

5. The finishing agent prepared by the preparation method of the cationic moisture absorption and sweat releasing finishing agent according to claims 2-4 is used for treating fiber fabric.

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