Preparation method of formaldehyde-free color fixative

An aldehyde-free color-fixing agent and color-fixing agent technology, which is used in the field of textile dyeing and fabric fixing, and the color-fixing field of sensitive color dyes. The effect of wet rubbing fastness

Active Publication Date: 2012-07-11
JIANGSU NIMATE SCI & TECH CO LTD
View PDF4 Cites 22 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of formaldehyde-free color fixative
  • Preparation method of formaldehyde-free color fixative

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 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%.

[0027] 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.

[0028] The characteristics of the fixing agent pre...

Embodiment 2

[0036] 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

[0038] 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.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02D06P5/08
Inventor 徐美君赵洪秀
Owner JIANGSU NIMATE SCI & TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap