Unlock instant, AI-driven research and patent intelligence for your innovation.

A dyeing composition for short-process dyeing

A composition and yellow technology, applied in the field of dyeing compositions for short-process dyeing, can solve the problems of poor color fastness, insufficient alkali resistance, insufficient oxidation resistance and stability, etc.

Active Publication Date: 2021-07-27
浙江山川科技股份有限公司
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, common alkali-resistant disperse dyes are usually dyed in the pH7-9 range, and alkali resistance is still insufficient
Chinese patent CN102250485B discloses a yellow disperse dye for acid-alkaline dyeing, which can be dyed in a dyebath of pH=4-14, but the oxidation resistance and stability of the dye is insufficient
The focus on dyes is mainly to improve the solubility of alkali-resistant disperse dyes through structural improvement, but this usually leads to a decrease in alkali resistance
The focus of the leveling agent is to select a leveling agent that is compatible with alkali-resistant disperse dyes. If the leveling agent is not well coordinated with the dye, it will easily lead to poor color fastness.

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
  • A dyeing composition for short-process dyeing
  • A dyeing composition for short-process dyeing
  • A dyeing composition for short-process dyeing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Add 4.9 g of 2,4-diaminotoluene, 7.4 g of 2,4-dinitrofluorobenzene, 20 g of N,N-diisopropylethylamine and 120 mL of absolute ethanol into a three-necked flask, and heat to reflux for 24 hours. After the reaction, cool to room temperature, filter; wash with distilled water for 3 times, and dry to obtain 10.6 g of orange-yellow solid (the yield of this step is 92%), that is, the compound of formula (II-1).

[0043]

[0044] Add the compound of formula (II-1) and appropriate amount of water into another three-necked flask, and stir at room temperature for 1 h. Add ice to cool down to 0-5°C, add 14.3g of 30wt% hydrochloric acid under heat preservation conditions, and stir well for 2h. At 0-5°C, 12.1 g of a 25 wt % sodium nitrite solution was continuously added dropwise, and after the dropwise addition was completed, the mixture was incubated for 4 hours. Add sulfamic acid to remove excess sodium nitrite, use starch potassium iodide test paper to detect that it does not ...

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

Disclosed is a dyeing composition for short-process dyeing, characterized in that the dyeing composition comprises an alkali-resistant yellow disperse dye of formula (I-1). The dyeing composition can realize short-process dyeing on polyester fiber fabrics, which can not only improve the alkali resistance of alkali-resistant disperse dyes under the condition of pH value of 10-12, but also can significantly improve the dyeing or uneven dyeing of polyester fabrics; In addition, the color fastness to washing and the color fastness to wet rubbing are likewise improved.

Description

technical field [0001] The invention belongs to the technical field of printing and dyeing, and relates to a dyeing composition for short-process dyeing. Background technique [0002] For a long time, the printing and dyeing industry has been one of the major polluting industries, and the amount of wastewater discharged ranks first among all industries. Studies have shown that for every ton of fabric printed and dyed, about 100-200 tons of wastewater are produced. According to incomplete statistics, the total amount of wastewater discharged by the printing and dyeing industry in my country is about 1 billion tons every year. Printing and dyeing wastewater not only contains a large amount of dyes, dyeing auxiliaries and impurities contained in fibers, but also contains a large amount of acids, alkalis and inorganic salts. These wastewaters have a deep color and high COD and BOD values. As my country's environmental protection legislation and law enforcement continue to str...

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 Patents(China)
IPC IPC(8): C09B67/22C09B67/38C09B67/40C09B29/12C09B29/01D06P1/18D06P1/19D06P3/54
CPCC09B29/0003C09B29/0018C09B29/12C09B67/0041C09B67/008C09B67/0082D06P1/18D06P1/19D06P3/54
Inventor 马金星马定海
Owner 浙江山川科技股份有限公司