A kind of reactive dye yellow and its preparation method and application

Abstract

The invention relates to a reactive dye yellow and its preparation method and application. The compound structure of the reactive dye yellow is shown in the general formula (I): the reactive dye of the present invention has high reactivity, good color fixing ability and good Excellent dyeing ability, and the reactive dye of the present invention does not need to add soda ash to fix the color when dyeing, avoiding the use of soda ash. At the same time, the reactive dyes of the present invention also have high temperature resistance, and can be used in conjunction with disperse dyes to simultaneously dye T / R or T / C blended fabric products at a temperature higher than 100°C, realizing a one-bath dyeing process, which not only simplifies the dyeing process , Shorten the dyeing time, greatly reduce the amount of sewage, reduce labor costs and energy consumption.

Description

A kind of reactive dye yellow and its preparation method and application technical field The invention belongs to dye technical field, be specifically related to a kind of reactive dye yellow and preparation method and application thereof. Background technique When the polyester-cotton blended fabrics on the market are dyed at present, the commonly used dyeing method is the two-bath method, that is, first by dividing The fabrics are dyed with loose dyes, washed, and then dyed with reactive dyes, washed. Although the same color is better, the fastness is better However, the process is lengthy and the energy consumption is too much, which is not conducive to energy saving, emission reduction and clean production of printing and dyeing enterprises. It can cause color flower and cylinder difference in production, affecting product quality and efficiency. In order to solve these problems, many factories are exploring polyester-cotton one-bath one-step dyeing, but the exi...

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Problems solved by technology

Although the same color is good and the fastness is high, the process is lengthy and the energy consumption is too much, which is not conducive to energy saving, emission reduction and clean production of printing and dyeing enterprises, and as the processing time prolongs, there may be problems of color flower and cylinder difference in production , affecting product quality and efficiency

[0003] In order to solve these problems, many factories are exploring the one-bath one-step dyeing method of polyester and cotton. However, the existing reactive dye yellow still has a high temperature resistance difference, and can only be dyed at about 50°C, which is not suitable for one-bath one-step dyeing with disperse dyes. dyeing

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