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Preparation method of formaldehyde-free textile color fixing agent

A textile and color-fixing agent technology, applied in the field of preparation of formaldehyde-free textile color-fixing agent, can solve problems such as ulcers and skin inflammation, achieve good color fixing, improve water resistance, and improve dry/wet rubbing fastness performance effect

Active Publication Date: 2020-09-11
义乌市渊泰新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The color-fixing agent prepared by the above inventions and existing patents contains free formaldehyde, which can easily lead to skin inflammation and even ulcers. Therefore, it is imperative to develop a formaldehyde-free color-fixing agent with high color fastness

Method used

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  • Preparation method of formaldehyde-free textile color fixing agent
  • Preparation method of formaldehyde-free textile color fixing agent
  • Preparation method of formaldehyde-free textile color fixing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of preparation method of formaldehyde-free textile color fixing agent, its main scheme is as follows:

[0027] Add 80g of polyether diol and 35g of isophorone diisocyanate into the reaction kettle, control the temperature to 75°C under the protection of nitrogen, then add 0.01g of catalyst, keep the reaction for 1h, and then add 3.8g of bismethylol Propionic acid is dissolved in 40g of N-methylpyrrolidone, and added to the reactor, and the heat preservation reaction is continued for 45min, then 5.2g of chain extender is added, and the reaction is performed for 20min; after completion, 18g of ionic liquid modified silane is added to control Warm at 55°C and react for 40 minutes; after completion, cool down to 40°C, add 4.8g of triethylamine, keep warm for 30 minutes, add 500g of deionized water after completion, stir rapidly for 3-6h, and filter to obtain the above-mentioned free Aldehyde textile color fixing agent.

[0028] A kind of ionic liquid modified silane...

Embodiment 2

[0035] A method for preparing a formaldehyde-free textile color-fixing agent, the main scheme of which is as follows:

[0036] Add 120g of polyether diol and 50g of isophorone diisocyanate into the reaction kettle, control the temperature to 78°C under the protection of nitrogen, then add 0.09g of catalyst, keep the temperature for 2 hours, and then add 5.6g of bismethylol Propionic acid was dissolved in 50g of N-methylpyrrolidone, and added to the reaction kettle, and the heat preservation reaction was continued for 85min, and then 6.9g of chain extender was added and reacted for 40min; after completion, 22g of ionic liquid modified silane was added to control Temperature at 58°C, react for 60 minutes; after completion, cool down to 50°C, add 6.2g of triethylamine, keep warm for 35 minutes, add 560g of deionized water after completion, stir rapidly for 5 hours, and filter to obtain the formaldehyde-free textile Fixative.

[0037] A kind of ionic liquid modified silane is pre...

Embodiment 3

[0044] Add 160g of polyether diol and 60g of isophorone diisocyanate into the reaction kettle, control the temperature to 90°C under the protection of nitrogen, then add 0.5g of catalyst, keep the reaction for 4h, and then add 10.6g of bismethylol Propionic acid was dissolved in 80g of N-methylpyrrolidone, and added to the reaction kettle, and the heat preservation reaction was continued for 120min, and then 8.8g of chain extender was added and reacted for 60min; after completion, 26g of ionic liquid modified silane was added to control Temperature at 75°C, react for 90 minutes; after completion, cool down to 60°C, add 8.6g of triethylamine, keep warm for 45 minutes, add 600g of deionized water after completion, stir rapidly for 6 hours, and filter to obtain the formaldehyde-free textile Fixative.

[0045] A kind of ionic liquid modified silane is prepared according to the following method: 80g of dimethyl diallyl ammonium chloride; 30g of 1,1,3,3-tetramethyldisiloxane; 0.9g ...

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Abstract

The invention relates to the field of preparation of textile assistants. The invention discloses a polyurethane-based formaldehyde-free textile color fixing agent, wherein an ionic liquid modified silane is added into a molecular chain segment in the polymerization process; the solubility parameters are greatly different; according to the preparation method, certain micro-phase separation exists between siloxane and a polyurethane macromolecular chain, so that the silicon is easily concentrated on the surface of the adhesive film, and the water resistance of the modified polyurethane adhesivefilm is improved, the wrapping effect of macromolecules on the dye is finally enhanced, and the defects of poor water resistance, low drying rate and the like of a fabric when a waterborne polyurethane material is used as a fabric color fixing agent are overcome; a soft chain end exists in a molecular chain of the polyurethane-based formaldehyde-free textile color fixing agent; and meanwhile, isocyanate on a macromolecular chain can react with polar groups such as hydroxyl, amino and the like on the fabric and the dye to form a polymeric membrane, so that the dry / wet rubbing fastness of the fabric can be improved, and a very good color fixing effect is achieved.

Description

technical field [0001] The invention relates to the field of preparation of textile auxiliary agents, in particular to a method for preparing a formaldehyde-free textile color-fixing agent. Background technique [0002] The textile industry is a traditional industry in our country, and an important industry that earns foreign exchange and profits through export, and plays a decisive role in the development of the national economy. In order to meet the requirements of color fastness, color fixing treatment is usually required after dyeing of textiles. Fixing agent can improve the fixation rate and wet fastness of dyes in the dyeing process, which is very important for improving product quality, reducing production costs and reducing pollution. [0003] CN103643566A discloses a color-fixing agent for textile printing and dyeing pigments, which consists of the following components: 1-2 parts by mass of hydroxypropyl methylcellulose, 120 parts by mass of deionized water, 8-9 pa...

Claims

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Application Information

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IPC IPC(8): C08G18/75C08G18/48C08G18/10C08G18/34C08G18/32C08G18/38D06P5/08C07F7/08
CPCC07F7/0879C08G18/10C08G18/4825C08G18/485C08G18/4854C08G18/755D06P5/08C08G18/348C08G18/3206C08G18/3893
Inventor 沈华汪季娟
Owner 义乌市渊泰新材料有限公司
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