Green and environment-friendly color fixing agent and preparation method thereof
By using green color fixatives designed with raw materials such as isophorone diisocyanate, the harm of existing color fixatives to the environment and human health has been solved, and efficient color fastness and color stability have been achieved. It is suitable for high-end textiles Dyeing treatment and has the advantages of environmental protection and industrial applications.
Patent Information
- Application Number
- CN202411303038.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-01-07
AI Technical Summary
The chemical components in existing color fixatives cause harm to the environment and human health, including hazardous substances such as Formaldehyde, amino, cations, and phenol, resulting in unstable fabric color, environmental pollution and health risks.
Using isophorone diisocyanate, polytetrahydrofuran, cationic modifier, butyl acrylate, end-hydroxy silicone oil and epoxychlorohydrin and other raw materials, a green and environmentally friendly color fixative is prepared through specific reaction steps and proportion design. , reduce harm to the environment and the human body.
Without damaging the softness and gloss of the fabric, the color fastness and color stability of the fabric are significantly improved, and the harm to the environment and the human body is reduced. It is suitable for dyeing and processing of high-end textiles, and the process is simple. Easy to industrially apply.
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Figure SMS_1
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of color fixing agents, in particular to a green and environmentally friendly color fixing agent and a preparation method thereof. Background Art
[0002] Color fixative is a chemical auxiliary agent in textile dyeing or printing processing. Its main function is to improve the color fastness of fabrics and keep the original color and texture of fabrics under washing, sun exposure and other environmental factors. It can prevent color fading or penetration, maintain the uniform distribution of color, and minimize color changes. The role of color fixative is mainly reflected in three aspects: 1. Improve color fastness: prevent color fading or penetration, and keep the color of fabrics bright. 2. Improve color uniformity: maintain the uniform distribution of color, avoid color unevenness and spots. 3. Reduce color change: minimize the color change due to washing, sun exposure or other environmental factors. In the textile production process, color fixative is usually mixed with dyes or printing pastes to improve the color fastness of fabrics and printing effects. At the same time, color fixative can also choose different types and dosages according to different textile materials and production processes to obtain the best color fastness effect.
[0003] The existing color fixers are mainly of the following types: polyamine color fixers. The active components in polyamine color fixers will release some harmful chemicals to the human body, such as formaldehyde, amine, etc. These substances will cause irritation and irritation to the skin and eyes. Polyamine color fixers will react with the fibers of the fabric, causing the folding and cross-linking of the fibers, reducing the softness and glossiness of the fabric. Polycationic color fixers. The cations in polycationic color fixers will damage the cell membrane of microorganisms, leading to the death of microorganisms and environmental pollution, and will poison microorganisms in the environment. Polycationic color fixers will react with the dyes in the fabric, causing the degradation and yellowing of the dyes, thereby causing the fabric to change color or darken. Phenolic color fixing agents: the phenolic compounds in phenolic color fixing agents will release some harmful chemicals such as phenol, etc. These substances will cause irritation and irritation to the skin and eyes. Phenolic color fixing agents will react with the dyes in the fabric, causing the degradation and color difference of the dyes, thus causing the color difference or discoloration of the fabric. Aldehyde color fixing agents: the aldehyde compounds in aldehyde color fixing agents will damage the cell membrane of microorganisms, leading to the death of microorganisms and environmental pollution, and will cause poisoning to microorganisms in the environment. Aldehyde color fixing agents will react with the fibers of the fabric, causing the cross-linking and embrittlement of the fibers, thus causing the fabric to become brittle or harden.
[0004] The disadvantages of these color fixing agents are mainly due to the active components and chemical structures therein. In order to develop environmentally friendly and sustainable color fixing agents, it is necessary to explore new chemical structures and active components to reduce the impact on the environment and human body. Therefore, the present invention proposes a green and environmentally friendly color fixing agent and a preparation method thereof to solve the above-mentioned problems. Summary of the invention
[0005] In view of the deficiencies in the prior art, the present invention provides a green and environmentally friendly color fixing agent and a preparation method thereof, which solves the problem that common color fixing agents contain different chemical components, including phenols, aldehydes, aromatic hydrocarbons and heavy metals, which may cause harm to the environment and human health.
[0006] To achieve the above objectives, the present invention is implemented by the following technical scheme: a green and environmentally friendly color fixing agent and a preparation method thereof, comprising the following raw materials in parts by weight: 20-50 parts of isophorone diisocyanate, 10-15 parts of polytetrahydrofuran, 1-10 parts of cationic modifier, 0.2-10 parts of N-methyldiethanolamine, 2-10 parts of butyl acrylate, 1-10 parts of terminal hydroxyl silicone oil, 0.3-5 parts of epichlorohydrin, and 100-140 parts of deionized water.
[0007] Preferably, 20 parts of isophorone diisocyanate, 10 parts of polytetrahydrofuran, 3 parts of cationic modifier, 3 parts of butyl acrylate, 5 parts of terminal hydroxyl silicone oil, 1 part of epichlorohydrin, and 100 parts of deionized water.
[0008] Preferably, 25 parts of isophorone diisocyanate, 13 parts of polytetrahydrofuran, 7 parts of cationic modifier, 7 parts of N-methyldiethanolamine, 6 parts of butyl acrylate, 7 parts of terminal hydroxyl silicone oil, 4 parts of epichlorohydrin, and 120 parts of deionized water.
[0009] Preferably, 30 parts of isophorone diisocyanate, 15 parts of polytetrahydrofuran, 10 parts of cationic modifier, 10 parts of N-methyldiethanolamine, 10 parts of butyl acrylate, 10 parts of terminal hydroxyl silicone oil, 5 parts of epichlorohydrin, and 140 parts of deionized water.
[0010] A method for preparing a green and environmentally friendly color fixing agent, specifically comprising the following steps: S1. Preparation All equipment and containers should be thoroughly cleaned to avoid any contamination from impurities, and the required chemical reagents and materials should be prepared and ensured to be of the highest quality; S2. Initial response First, isophorone diisocyanate is reacted with polytetrahydrofuran at 70-90° for 2-5 hours; S3. Addition of modifier Then add cationic modifier N-methyldiethanolamine to extend the chain, 50-60°, and react for 2-4 hours; S4. Final reaction Then add butyl acrylate, hydroxyl-terminated silicone oil, and epichlorohydrin to extend the chain, 70-90°, react for 2-4 hours, cool, stir at high speed, and add deionized water for hydration; S7. Cooling storage Cool the prepared fixing agent solution to room temperature, then filter the solution to remove any undissolved impurities or particles to ensure the purity of the solution, and store the filtered solution in a sealed container away from light and high temperature to extend its shelf life.
[0011] The present invention provides a green and environmentally friendly color fixing agent and a preparation method thereof. It has the following beneficial effects: The invention provides a green and environmentally friendly color fixing agent and a preparation method thereof. The raw materials used in the invention, such as isophorone diisocyanate, polytetrahydrofuran, and a cationic modifier, are optimized in formula design to reduce the use of environmentally harmful substances, especially in the color fixing process, no formaldehyde, amines, phenols, or other chemical substances harmful to human body and environment are released. Therefore, the color fixing agent has less harm to the environment and human body and is more in line with modern environmental protection requirements. The color fixing agent effectively improves the color fastness of fabrics through scientific formula design, especially can maintain the bright color and stability under washing and sun exposure conditions, which is achieved by carefully selecting and optimizing the reaction conditions and proportions of multiple chemical components, thereby ensuring the durability of fabric color. Compared with traditional polyamines and polycationic and phenolic color fixing agents. The color fixing agent in the present invention can maintain a good color fixing effect without damaging the softness and glossiness of the fabric, which makes it particularly suitable for dyeing treatment of high-grade fabrics, does not cause hardening or brittleness of the fabric, and can maintain the original texture and feel of the fabric. The preparation method of the present invention has a simple process and is easy to implement on existing industrial equipment without complicated equipment modification or additional investment. At the same time, the selection of each component in its formula and the control of reaction conditions are reasonable, so that the production of the color fixing agent has stability and repeatability, and is suitable for large-scale production and application. Therefore, the present invention provides a green and environmentally friendly color fixing agent with both environmental protection, high efficiency and excellent applicability, which not only solves the shortcomings of traditional color fixing agents in environmental protection and fabric treatment, but also has good industrial application prospects. DETAILED DESCRIPTION
[0012] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1
[0013] A green and environmentally friendly color fixing agent and a preparation method thereof, comprising the following raw materials in parts by weight: 20 parts of isophorone diisocyanate, 10 parts of polytetrahydrofuran, 3 parts of cationic modifier, 3 parts of butyl acrylate, 5 parts of terminal hydroxyl silicone oil, 1 part of epichlorohydrin, and 100 parts of deionized water.
[0014] A method for preparing a green and environmentally friendly color fixing agent, specifically comprising the following steps: S1. Preparation All equipment and containers should be thoroughly cleaned to avoid any contamination from impurities, and the required chemical reagents and materials should be prepared and ensured to be of the highest quality; S2. Initial response First, isophorone diisocyanate is reacted with polytetrahydrofuran at 70° for 3 hours; S3. Addition of modifier Then add cationic modifier N-methyldiethanolamine to extend the chain, 50°, and react for 2 hours; S4. Final reaction Then add butyl acrylate, hydroxyl-terminated silicone oil, and epichlorohydrin to extend the chain, react at 70° for 2 hours, cool, stir at high speed, and add deionized water for hydration; S7. Cooling storage Cool the prepared fixing agent solution to room temperature, then filter the solution to remove any undissolved impurities or particles to ensure the purity of the solution, and store the filtered solution in a sealed container away from light and high temperature to extend its shelf life. Example 2
[0015] A green and environmentally friendly color fixing agent and a preparation method thereof, comprising the following raw materials in parts by weight: 25 parts of isophorone diisocyanate, 13 parts of polytetrahydrofuran, 7 parts of cationic modifier, 7 parts of N-methyldiethanolamine, 6 parts of butyl acrylate, 7 parts of terminal hydroxyl silicone oil, 4 parts of epichlorohydrin, and 120 parts of deionized water.
[0016] A method for preparing a green and environmentally friendly color fixing agent, specifically comprising the following steps: S1. Preparation All equipment and containers should be thoroughly cleaned to avoid any contamination from impurities, and the required chemical reagents and materials should be prepared and ensured to be of the highest quality; S2. Initial response First, isophorone diisocyanate is reacted with polytetrahydrofuran at 80° for 4 hours; S3. Addition of modifier Then, cationic modifier N-methyldiethanolamine was added to extend the chain, and the reaction was carried out at 55° for 3 hours; S4. Final reaction Then add butyl acrylate, hydroxyl-terminated silicone oil, and epichlorohydrin to extend the chain, react at 80° for 3 hours, cool, stir at high speed, and add deionized water for hydration; S7. Cooling storage Cool the prepared fixing agent solution to room temperature, then filter the solution to remove any undissolved impurities or particles to ensure the purity of the solution, and store the filtered solution in a sealed container away from light and high temperature to extend its shelf life. Example 3
[0017] A green and environmentally friendly color fixing agent and a preparation method thereof, comprising the following raw materials in parts by weight: 30 parts of isophorone diisocyanate, 15 parts of polytetrahydrofuran, 10 parts of cationic modifier, 10 parts of N-methyldiethanolamine, 10 parts of butyl acrylate, 10 parts of terminal hydroxyl silicone oil, 5 parts of epichlorohydrin, and 140 parts of deionized water.
[0018] A method for preparing a green and environmentally friendly color fixing agent, specifically comprising the following steps: S1. Preparation All equipment and containers should be thoroughly cleaned to avoid any contamination from impurities, and the required chemical reagents and materials should be prepared and ensured to be of the highest quality; S2. Initial response First, isophorone diisocyanate is reacted with polytetrahydrofuran at 90° for 5 hours; S3. Addition of modifier Then, cationic modifier N-methyldiethanolamine was added to extend the chain at 60° for 4 hours; S4. Final reaction Then add butyl acrylate, hydroxyl-terminated silicone oil, and epichlorohydrin to extend the chain, react at 90° for 4 hours, cool, stir at high speed, and add deionized water for hydration; S7. Cooling storage Cool the prepared fixing agent solution to room temperature, then filter the solution to remove any undissolved impurities or particles to ensure the purity of the solution, and store the filtered solution in a sealed container away from light and high temperature to extend its shelf life.
[0019] The following is a table of the performance of the finished color fixing agents prepared in three embodiments:
[0020] According to the performance in the above table, Example 1 is suitable for the dyeing and fixing needs of daily textiles, especially when there are certain requirements for the fixing effect and washability, but the softness requirement is not high. It is suitable for the production of fast-moving consumer goods and seasonal products. Example 2 is suitable for the dyeing and fixing needs of high-end textiles, especially when there are high requirements for the fixing effect, washability and anti-yellowing performance. It is suitable for the production and use of high-end clothing and home textile products. Example 3 is suitable for the dyeing and fixing needs of top-level textiles, especially when there are extremely high requirements for the fixing effect, washability, softness and anti-yellowing performance. It is suitable for the production and use of high-end fashion clothing, high-quality home textiles and special-purpose textiles.
[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A green and environmentally friendly color fixing agent and a preparation method thereof, characterized in that: The method is prepared by comprising the following raw materials in parts by weight: 20-50 parts of isophorone diisocyanate, 10-15 parts of polytetrahydrofuran, 1-10 parts of cationic modifier, 0.2-10 parts of N-methyldiethanolamine, 2-10 parts of butyl acrylate, 1-10 parts of terminal hydroxyl silicone oil, 0.3-5 parts of epichlorohydrin, and 100-140 parts of deionized water.
2. A green and environmentally friendly color fixing agent according to claim 1, characterized in that: The method comprises the following raw materials in parts by weight: 20 parts of isophorone diisocyanate, 10 parts of polytetrahydrofuran, 3 parts of cationic modifier, 3 parts of butyl acrylate, 5 parts of terminal hydroxyl silicone oil, 1 part of epichlorohydrin, and 100 parts of deionized water.
3. A green and environmentally friendly color fixing agent according to claim 1, characterized in that: The method comprises the following raw materials in parts by weight: 25 parts of isophorone diisocyanate, 13 parts of polytetrahydrofuran, 7 parts of cationic modifier, 7 parts of N-methyldiethanolamine, 6 parts of butyl acrylate, 7 parts of terminal hydroxyl silicone oil, 4 parts of epichlorohydrin, and 120 parts of deionized water.
4. A green and environmentally friendly color fixing agent according to claim 1, characterized in that: The method comprises the following raw materials in parts by weight: 30 parts of isophorone diisocyanate, 15 parts of polytetrahydrofuran, 10 parts of cationic modifier, 10 parts of N-methyldiethanolamine, 10 parts of butyl acrylate, 10 parts of terminal hydroxyl silicone oil, 5 parts of epichlorohydrin, and 140 parts of deionized water.
5. A method for preparing a green and environmentally friendly color fixing agent, characterized in that: The specific steps include: S1. Preparation All equipment and containers should be thoroughly cleaned to avoid contamination by any impurities, and the required chemical reagents and materials should be prepared and ensured to meet the quality standards; S2. Initial response First, isophorone diisocyanate is reacted with polytetrahydrofuran at 70-90° for 2-5 hours; S3. Addition of modifier Then add cationic modifier N-methyldiethanolamine to extend the chain, 50-60°, and react for 2-4 hours; S4. Final reaction Then add butyl acrylate, hydroxyl-terminated silicone oil, and epichlorohydrin to extend the chain, 70-90°, react for 2-4 hours, cool, stir at high speed, and add deionized water for hydration; S7. Cooling storage Cool the prepared fixing agent solution to room temperature, then filter the solution to remove any undissolved impurities or particles to ensure the purity of the solution, and store the filtered solution in a sealed container away from light and high temperature to extend its shelf life.
6. The method for preparing a green and environmentally friendly color fixing agent according to claim 5, characterized in that: In the preliminary reaction of step S2, the reaction temperature is 70-90° and the reaction time is 3-5 hours.
7. The method for preparing a green and environmentally friendly color fixing agent according to claim 5, characterized in that: The reaction temperature of adding the modifier in step S3 is 50-60° and the reaction time is 2-4 hours.
8. The method for preparing a green and environmentally friendly color fixing agent according to claim 5, characterized in that: In the final reaction of step S4, the reaction temperature is 70-90° and the reaction time is 2-4 hours.