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Dyeing-accelerating anti-staining agent for acid dye dyeing of chinlon and spandex fabrics and synthesis method of dyeing-accelerating anti-staining agent

A synthesis method and technology of acid dyes, applied in the field of dye-promoting and anti-staining agent and its synthesis, and dye-promoting agent, can solve the problems of fabric color difference and hand feeling effect, increase process steps, etc., so as to reduce the dye uptake rate and improve the dye uptake rate. , Improve the effect of dyeing efficiency and process efficiency

Active Publication Date: 2021-10-19
浙江理工大学桐乡研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method is applicable to the existing spandex or nylon spandex fabrics, the process steps are increased through the finishing method, and at the same time, the color difference and handle of the fabrics are affected to a certain extent.

Method used

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  • Dyeing-accelerating anti-staining agent for acid dye dyeing of chinlon and spandex fabrics and synthesis method of dyeing-accelerating anti-staining agent
  • Dyeing-accelerating anti-staining agent for acid dye dyeing of chinlon and spandex fabrics and synthesis method of dyeing-accelerating anti-staining agent
  • Dyeing-accelerating anti-staining agent for acid dye dyeing of chinlon and spandex fabrics and synthesis method of dyeing-accelerating anti-staining agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A three-necked flask equipped with a condenser and a stirrer was used as the reaction vessel.

[0034] (1) Add 4.61g of isophorone diisocyanate dropwise to 10.00g of polytetrahydrofuran with a number average molecular weight of 1000, mix and stir, and add 1 drop of dibutyltin dilaurate, stir the three evenly, and heat to 80°C. After reacting for 1.5h, the temperature was lowered to 70°C after obtaining the prepolymerized product.

[0035] (2) Dissolve 3.35g of 2,2-dimethylolpropionic acid and 2.41g of 1,4-butanediol in 8.85g of N-methylpyrrolidone to make a mixed chain extender solution, and make the mixed chain extender solution Add dropwise to the prepolymerized product in step (1) through a constant pressure funnel, keep at 70°C, react for 1.5-2 hours to obtain a chain extension product, and lower the temperature to 35°C.

[0036] (3) Add 1.20 g of γ-aminopropyltriethoxysilane dropwise to the chain-extended product in step (2), stir, keep at 35° C., and react for 1 ...

Embodiment 2

[0040] A three-necked flask equipped with a condenser and a stirrer was used as the reaction vessel.

[0041] (1) Add 4.20g of hexamethylene diisocyanate dropwise to 22.00g of polytetrahydrofuran with a number average molecular weight of 2000, mix and stir, and add 1 drop of dibutyltin dilaurate, stir the three evenly, and heat to 90°C, After reacting for 2 hours, the temperature was lowered to 75° C. after obtaining the prepolymerized product.

[0042] (2) 4.45g 2,2-dimethylol butyric acid and 1.80g 1,4-butanediol and 1.34g trimethylolpropane are dissolved in 15g N-methylpyrrolidone to make a mixed chain extender solution, The mixed chain extender solution was added dropwise to the prepolymerized product in step (1) through a constant pressure funnel, kept at 75°C, and reacted for 1.5h to obtain the chain extended product, and the temperature was lowered to 45°C.

[0043] (3) Add 1.34 g of γ-aminopropyltriethoxysilane dropwise to the chain-extended product in step (2), stir, k...

Embodiment 3

[0046] A three-necked flask equipped with a condenser and a stirrer was used as the reaction vessel.

[0047] (1) Add 4.35g of toluene diisocyanate dropwise to 11.00g of polyethylene glycol with a number average molecular weight of 1000, mix and stir, and add 1 drop of dibutyltin dilaurate, stir the three evenly, heat to 85°C, and react After 1.5 hours, the prepolymerization product was obtained and the temperature was lowered to 65°C.

[0048] (2) Dissolve 4.02g of 2,2-dimethylolpropionic acid and 2.36g of 1,6-hexanediol in 10g of N-methylpyrrolidone to make a mixed chain extender solution, pass the mixed chain extender solution through The constant pressure funnel was added dropwise to the prepolymerization product in step (1), kept at 65°C, and reacted for 1.5h to obtain the chain extension product, and the temperature was lowered to 40°C.

[0049] (3) Add 1.18 g of γ-glycidoxypropyltrimethoxysilane dropwise to the chain extension product in step (2), stir, keep at 40°C, a...

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PUM

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Abstract

The invention relates to a dyeing accelerating agent, in particular to a dyeing-accelerating anti-staining agent for acid dye dyeing of a chinlon and spandex fabrics and a synthesis method of the dyeing-accelerating anti-staining agent, belonging to the technical field of dyeing of the chinlon and spandex fabrics. The dyeing-accelerating anti-staining agent for the acid dye dyeing of a chinlon and spandex fabrics in the invention is a siloxane-containing compound containing at least one anionic group. The structural formula of the dyeing-accelerating anti-staining agent is as shown in the specification. In the structural formula, R1-R22 are alkyl groups, preferably CH2 or C2H5; r is greater than or equal to 1 and is an integer; A is an anionic group; and N is a cationic group. The structure of the auxiliary agent not only contains a carbamate group, but also contains the anionic group. In a dyeing process, after the auxiliary agent is added, the effects of resisting dyeing and accelerating dyeing can be respectively achieved through interaction with spandex and chinlon.

Description

technical field [0001] The invention relates to a dyeing accelerator, in particular to a dyeing accelerator and anti-staining agent for acid dye dyeing of nylon and ammonia fabrics and a synthesis method thereof, belonging to the technical field of nylon and ammonia fabric dyeing. Background technique [0002] Nylon and spandex fabric combines the advantages of nylon and spandex. It has the characteristics of high elasticity, high elongation, wear resistance and moisture absorption. It is often used in T-shirts, shirts, elastic pants and other fabrics. Both nylon and spandex contain imine groups in structure, so they can be dyed with acid dyes. However, due to the difference in chemical structure between nylon and spandex, the dyeing properties of acid dyes on the two fibers are different. Nylon is a polyamide fiber, and its imine group contains a methylene group with an electron-donating effect, which will increase the ability of the imine group to bind protons. Spandex i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/34C08G18/32C08G18/28D06P1/52D06P1/39D06P3/85
CPCC08G18/6692C08G18/4854C08G18/4833C08G18/348C08G18/3206C08G18/289D06P1/5285D06P1/39D06P3/8209
Inventor 钱迅南黄益李永强蒋吾伟
Owner 浙江理工大学桐乡研究院有限公司
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