Preparation method of formaldehyde-free color fixative

A formaldehyde-free color-fixing agent and color-fixing agent technology, which is applied in the field of color-fixation of textile dyed fabrics and color-sensitive dyes, can solve problems such as hue changes, prevent shedding or hydrolysis, simple production process, and small impact Effect

Active Publication Date: 2013-10-09
JIANGSU NIMATE SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is easy to produce hue changes when dyes with sensitive colors such as turquoise orchid are fixed.

Method used

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  • Preparation method of formaldehyde-free color fixative
  • Preparation method of formaldehyde-free color fixative

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add a certain amount of diethylenetriamine, part of hexamethylenediamine (accounting for 25-35% of the total amount of hexamethylenediamine) and deionized water into the four-necked flask, and heat up to 60°C-65°C while stirring, slowly Add a certain amount of epichlorohydrin dropwise for addition reaction, the dropwise addition time is 2-3h, and the dropwise addition is completed; continue the heat preservation reaction for 30-40min, drop the remaining hexamethylenediamine solution, dropwise time After completion, continue to keep warm for 3-4 hours, pass the test, cool down to below 40°C, add a certain amount of hydrochloric acid to adjust the pH value to 5-6, and finally obtain a color-fixing agent with a solid content of about 35%.

[0026] During the preparation process, the molar ratio of diethylenetriamine to hexamethylenediamine is 1:1.2-1:1.7, and the molar ratio of epichlorohydrin to total amines is 1:1-1:3.

[0027] The characteristics of the fixing agent pre...

Embodiment 2

[0035] The difference between this example and Example 1 is that dimethylamine is used instead of diethylenetriamine, and the molar ratio of dimethylamine to hexamethylenediamine is 1:1.2.

Embodiment 3

[0037] The difference between this example and Example 1 is that triethylenetetramine is used instead of diethylenetriamine, and the molar ratio of triethylenetetramine to hexamethylenediamine is 1:1.5.

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Abstract

The invention relates to a preparation method of a formaldehyde-free color fixative. The invention is characterized in that amines and epoxy chloropropane react to generate a condensate, wherein the amines are total amines and prepared by mixing hexamethylendiamine and other substances; and the other substances can be one or more of ammonia water, monomethyl amine, dimethyl amine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, tetraethylenepentamine, ethylene diamine, urea and urea substitute. The color fixative has the advantages of high color fastness, small influence on sensitive color tone, low consumption, no environment pollution of formaldehyde, accessible raw materials and simple production technique, can enhance the dry / wet fastness to rubbing and the color fastness to water washing, and basically does not generate color phase variations when fixing emerald blue, bright blue and other sensitive color dyes.

Description

technical field [0001] The invention relates to a preparation method of an aldehyde-free color fixing agent, which is mainly used for color fixing of textile dyed fabrics. It is especially suitable for color fixing of sensitive color dyes such as emerald orchid. Background technique [0002] The current color fixing agents can be roughly divided into cationic polymer type color fixing agents, resin type color fixing agents (including formaldehyde resin type color fixing agents, polyamine resin type color fixing agents), and cross-linking reaction type color fixing agents. [0003] Reactive formaldehyde-free color fixing agent is a color fixing agent prepared by reacting epichlorohydrin as a reactive substance with amines, ethers, carboxylic acids, amides, etc. Most of them are polymers with cationic reactive groups, which can form salts and combine with negatively charged dyes (reactive, acidic, direct dyes), and can also be cross-linked with hydroxyl, amino and other group...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C08G73/02D06P5/08
Inventor徐美君赵洪秀
OwnerJIANGSU NIMATE SCI & TECH CO LTD