Efficient dye-resistant and elasticity-loss-resistant agent and preparation method thereof
By using components such as diethylene triamine, and using slow dropping addition and gradient heating reaction, an efficient anti-dyeing agent is prepared, which solves the problems of unstable anti-dyeing effect, reduced fiber elasticity and complex preparation process in the prior art, and achieves the effect of pure fabric color, fiber protection and simplified preparation.
Patent Information
- Application Number
- CN202411760365.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-03-25
AI Technical Summary
The existing high-efficiency anti-dyeing agents have unstable anti-dyeing effect under specific conditions. The fiber elasticity decreases after long-term use, and the preparation process is complex, which increases production uncertainty and cost.
Using components such as diethylenetriamine, methanol, methyl acrylate and dimethyl terephthalate, high-efficiency anti-staining agents are prepared through slow dropping addition and gradient heating reaction. The method includes reacting at room temperature for 48 hours, followed by reduced pressure distillation and gradient heating reaction, and finally insulated reaction at 180°C for 3 hours.
This efficient anti-dynamic and anti-elastic agent can significantly improve the uniformity of dyeing, ensure the purity and stability of the fabric color, protect the elasticity of the fiber, extend the service life of the fabric, simplify the preparation process, and reduce production costs.
Smart Images
Figure CN119684148A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of chemical industry, and specifically relates to a high-efficiency anti-dyeing and anti-elasticity loss agent and a preparation method thereof. Background Art
[0002] High-efficiency anti-dyeing and anti-elasticity loss agents play an important role in the textile printing and dyeing industry. They can not only effectively prevent the problem of dye back-dyeing during the washing process, but also protect the elasticity of the fabric, especially the elasticity of elastic fibers such as spandex. High-efficiency anti-dyeing and anti-elasticity loss agents are usually polymers composed of special non-ionic surfactants. These ingredients have excellent dispersibility and washing ability, and can play a very excellent anti-dyeing effect in inter-color fabrics. In addition, they are usually soluble in water, have excellent dispersibility, and have long-lasting anti-staining properties. While preventing dye back-dyeing, they can also effectively protect the elasticity of the fabric, especially the elasticity of elastic fibers such as spandex, to avoid the loss of elasticity caused by chemical or physical factors during the processing process.
[0003] Based on the existing technology, there are the following defects: 1. The anti-dyeing effect may be unstable under certain conditions (such as high temperature, high pressure or strong acid and alkali environment), resulting in color difference or color mutual dyeing during the dyeing process; 2. The anti-elasticity loss agent is intended to protect the elasticity of the fiber, but some products may still experience a decrease in elasticity after long-term use or multiple washings; 3. The preparation process of some anti-dyeing and anti-elasticity loss agents is relatively complicated, and the reaction conditions and raw material ratios need to be strictly controlled; this increases the uncertainty and cost in the production process. Summary of the invention
[0004] Based on this, the object of the present invention is to provide a high-efficiency anti-dyeing and anti-elasticity loss agent and a preparation method thereof to solve the technical problems raised in the above background technology.
[0005] To achieve the above object, the present invention provides the following technical solutions:
[0006] A highly effective anti-dyeing and anti-elasticity loss agent, comprising the following components, calculated by weight:
[0007] 51.5-56.5 parts of diethylenetriamine, 50-90 parts of methanol, 35-43 parts of methyl acrylate, 48.5-58.2 parts of dimethyl terephthalate; auxiliary substances: 0.1 part of antioxidant, 0.4 part of diisopropylbenzene peroxide, 0.3 part of sodium acetate.
[0008] Also provided is a method for preparing a high-efficiency anti-dyeing and anti-elasticity loss agent, comprising the following preparation steps:
[0009] Step 1: Add diethylenetriamine and methanol into the reactor and mix them thoroughly. Slowly drop methyl acrylate into the reactor under normal temperature and magnetic stirring. After the dropwise addition is completed, react at a temperature of 20°C to 40°C for 48 hours to obtain a prepolymer monomer.
[0010] Step 2: distill the prepolymer monomer under reduced pressure to remove methanol, then add 0.4 parts of diisopropylbenzene peroxide, and increase the temperature gradually under reduced pressure. After the temperature is increased to 155° C., keep the temperature for 4 hours to obtain a light yellow viscous product.
[0011] Step 3: Add antioxidant, dimethyl terephthalate and sodium acetate to the yellow viscous product prepared in step 2, gradually raise the temperature to 180°C and keep the temperature for 3 hours to obtain a high-efficiency anti-dyeing and anti-elasticity loss agent.
[0012] Preferably, the gradient temperature increase is to increase the temperature to 60°C, 100°C, and 140°C in sequence, and react at 60°C, 100°C, and 140°C for one hour each.
[0013] In summary, the present invention mainly has the following beneficial effects:
[0014] The high-efficiency anti-dyeing and anti-elasticity loss agent provided by the present invention can effectively prevent fabrics of different colors from dyeing each other during the washing process, ensuring the purity and stability of the fabric color. The auxiliary agent can significantly improve the uniformity of dyeing, so that the dyed product presents a better visual effect. Secondly, while protecting the elasticity of the fiber, the auxiliary agent can also reduce the damage of the fabric during the printing and dyeing process and extend the service life of the fabric. The auxiliary agent can be used for dyeing various textiles, including cotton, polyester, blended fabrics and the like, and has a wide range of applicability. Specific embodiments
[0015] Example 1
[0016] This embodiment provides a high-efficiency anti-dyeing and anti-elasticity loss agent, which is prepared by the following method:
[0017] Step (1) In a reaction vessel, add 51.5 parts of diethylenetriamine and 80 parts of methanol, mix them thoroughly, and slowly drip 43 parts of methyl acrylate into the reaction system under normal temperature and magnetic stirring. After the dripping is completed, react at a temperature of 20°C to 40°C for 48 hours to obtain a light yellow transparent AB2 type prepolymer monomer. The molecular structure is as follows:
[0018]
[0019] Step (2) The AB2 prepolymer monomer is subjected to a vacuum distillation step to remove methanol, and then 0.4 parts of dicumyl peroxide are added, and the temperature is gradually increased under reduced pressure, specifically at 60°C, 100°C, and 140°C for one hour each, and then the temperature is increased to 155°C and kept for 4 hours to obtain a viscous light yellow product. The molecular structure is as follows:
[0020]
[0021] Step (3) Add 48.5 parts of dimethyl terephthalate, 0.3 parts of sodium acetate and 0.1 parts of antioxidant to the above reactants, and gradually increase the temperature to a maximum temperature of 180° C. and keep the temperature for 3 hours under nitrogen protection to obtain a high-efficiency anti-dyeing and anti-elasticity loss agent.
[0022] HPAMAM-NH2+CH3COOC-C6H4-COOCH3→HPAMAM-NH-COCH6H4-COOCH3+CH3OH
[0023] Example 2
[0024] This embodiment provides a high-efficiency anti-dyeing and anti-elasticity loss agent, which is prepared by the following method:
[0025] Step (1) In a reaction container, add 51.5 parts of diethylenetriamine and 80 parts of methanol, mix them thoroughly and evenly, and slowly drop 39.5 parts of methyl acrylate into the reaction system under normal temperature and magnetic stirring. After the dropwise addition is completed, react at a temperature of 20° C. to 40° C. for 48 hours to obtain a light yellow transparent AB2 type prepolymer monomer.
[0026] Step (2) The AB2 prepolymer monomer is subjected to a vacuum distillation step to remove methanol, and then 0.4 parts of diisopropylbenzene peroxide are added, and the temperature is gradually increased under reduced pressure conditions, specifically at 60°C, 100°C, and 140°C for one hour each, and then the temperature is increased to 155°C and kept warm for 4 hours to obtain a viscous light yellow product.
[0027] Step (3) Add 58.2 parts of dimethyl terephthalate, 0.3 parts of sodium acetate and 0.1 parts of antioxidant to the above reactants, and gradually increase the temperature to a maximum temperature of 180° C. and keep the temperature for 3 hours under nitrogen protection to obtain a high-efficiency anti-dyeing and anti-elasticity loss agent.
[0028] Example 3
[0029] This embodiment provides a high-efficiency anti-dyeing and anti-elasticity loss agent, which is prepared by the following method:
[0030] Step (1) In a reaction container, add 56.5 parts of diethylenetriamine and 80 parts of methanol, mix them thoroughly and evenly, and slowly drop 43 parts of methyl acrylate into the reaction system under normal temperature and magnetic stirring. After the dropwise addition is completed, react at a temperature of 20° C. to 40° C. for 48 hours to obtain a light yellow transparent AB2 type prepolymer monomer.
[0031] Step (2) The AB2 prepolymer monomer is subjected to a vacuum distillation step to remove methanol, and then 0.4 parts of diisopropylbenzene peroxide are added, and the temperature is gradually increased under reduced pressure conditions, specifically at 60°C, 100°C, and 140°C for one hour each, and then the temperature is increased to 155°C and kept warm for 4 hours to obtain a viscous light yellow product.
[0032] Step (3) Add 77.6 parts of dimethyl terephthalate, 0.3 parts of sodium acetate and 0.1 parts of antioxidant to the above reactants, and gradually increase the temperature to a maximum temperature of 180° C. and keep the temperature for 3 hours under nitrogen protection to obtain a high-efficiency anti-dyeing and anti-elasticity loss agent.
[0033] Comparative Example 1
[0034] This comparative example provides an anti-dyeing and anti-elasticity loss agent, which is prepared by the following method:
[0035] Mix 27 parts of coconut oil fatty acid diethanolamide, 11.4 parts of fatty alcohol polyoxyethylene ether, 2.2 parts of peregrin, 13 parts of sulfonic acid, 8 parts of 4%-6% polyester, 23 parts of polyurethane and the balance of water, stir at 40°C to dissolve all components, stir evenly, and obtain the anti-dyeing and anti-elasticity loss agent after cooling.
[0036] Comparative Example 2
[0037] This comparative example provides an anti-dyeing and anti-elasticity loss agent, which is prepared by the following method:
[0038] Add 56.5 parts of diethylenetriamine and 80 parts of methanol into the reactor and mix them thoroughly. Slowly drop 43 parts of methyl acrylate into the reaction system under normal temperature and magnetic stirring. After the dropwise addition is completed, react at a temperature of 20°C to 40°C for 48 hours to obtain a prepolymer monomer.
[0039] The prepolymer monomer was distilled under reduced pressure to remove methanol, and then 0.4 parts of diisopropylbenzene peroxide was added. The temperature was increased gradually under reduced pressure (reacted at 60°C, 100°C, and 140°C for one hour each). After the temperature was increased to 150°C, the reaction was kept warm for 4 hours to obtain a light yellow liquid. The liquid was precipitated with anhydrous ether and filtered, separated and dried in vacuum at 40°C to obtain an anti-dyeing and anti-elasticity loss agent.
[0040] Performance Testing
[0041] (1) The anti-staining and anti-elasticity loss agents of Examples 1 to 3, the anti-staining and anti-elasticity loss agents of Comparative Examples 1 to 2, and a commercially available competitive product (purchased from Taiwan Pan Asia Co., Ltd., soap oil NP8.6) were used to treat fabrics respectively. The test fabrics were unwashed denim (98% cotton, 2% spandex) and standard cotton interlining and polyester interlining.
[0042] (2) Denim anti-dyeing performance test: refer to national standard HG / T 5667-2019.
[0043] The anti-dyeing test process: washing (45℃×50min, bath ratio 1:20) → washing at room temperature → drying (105℃) → testing. The anti-dyeing and anti-elasticity loss agent used is a 10% solid content anti-dyeing and anti-elasticity loss agent, and the dosage is 20g / L.
[0044] The specific test results are shown in Table 1
[0045] Table 1 Comparison of denim anti-dyeing effects
[0046]
[0047]
[0048] Note: There are 1 to 5 levels, the higher the level, the better
[0049] It can be seen from Table 1 that the denim and standard cotton lining and polyester lining treated with the modified hyperbranched polyamide high-efficiency anti-dyeing and anti-elasticity agent prepared by the present invention have higher grades and excellent anti-dyeing performance.
[0050] (3) Denim anti-elasticity performance test: refer to national standard T / GDTEX 07-2019.
[0051] Anti-bullet loss test process: soak (60℃×50min, bath ratio 1:20) → wash with water at room temperature*10 → dry (105℃) → test.
[0052] The specific test results are shown in Table 2
[0053] Table 2 Comparison of denim anti-elasticity effects
[0054]
[0055] Note: The lower the bullet loss rate, the better. A value of 0 means no bullet loss.
[0056] It can be seen from Table 2 that the modified hyperbranched polyamide high-efficiency anti-dyeing and anti-elasticity loss agent of the present invention did not lose elasticity after washing 10 times. It can be seen that the high-efficiency anti-dyeing and anti-elasticity loss agent of the present invention has a good anti-elasticity loss effect.
[0057] The above embodiments are only for illustrating the technical idea of the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention.
Claims
1. A highly effective anti-dyeing and anti-elasticity loss agent, characterized in that , including the following components, calculated by mass: 51.5-56.5 parts of diethylenetriamine, 50-90 parts of methanol, 35-43 parts of methyl acrylate, 48.5-58.2 parts of dimethyl terephthalate; auxiliary substances: 0.1 part of antioxidant, 0.4 part of diisopropylbenzene peroxide, 0.3 part of sodium acetate.
2. A method for preparing a high-efficiency anti-dyeing and anti-elasticity loss agent, applied to the high-efficiency anti-dyeing and anti-elasticity loss agent according to claim 1, characterized in that: The method comprises the following preparation steps: Step 1: Add diethylenetriamine and methanol into the reactor and mix them thoroughly. Slowly drop methyl acrylate into the reactor under normal temperature and magnetic stirring. After the dropwise addition is completed, react at a temperature of 20°C to 40°C for 48 hours to obtain a prepolymer monomer. Step 2: distill the prepolymer monomer under reduced pressure to remove methanol, then add 0.4 parts of diisopropylbenzene peroxide, and increase the temperature gradually under reduced pressure. After the temperature is increased to 155° C., keep the temperature for 4 hours to obtain a light yellow viscous product. Step 3: Add antioxidant, dimethyl terephthalate and sodium acetate to the light yellow viscous product prepared in step 2, gradually heat to 180°C after complete melting, and keep warm for 3 hours to obtain a high-efficiency anti-dyeing and anti-elasticity loss agent.
3. The method for preparing a high-efficiency anti-dyeing and anti-elasticity loss agent according to claim 2, characterized in that: The gradient temperature increase specifically includes sequentially increasing the temperature to 60° C., 100° C., and 140° C., and reacting at 60° C., 100° C., and 140° C. for one hour each.