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A kind of black reactive dye composition, preparation method and application

A technology of reactive dyes and compositions, applied in dyeing methods, organic dyes, textiles and papermaking, etc., can solve problems such as low color fastness to rubbing, reactive black dyes do not have comprehensive performance, and are difficult to meet, and achieve Good hand feeling, improved color fastness to rubbing, and good lifting power

Active Publication Date: 2016-04-20
ZHEJIANG RUIHUA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned reactive black dyes do not have the above-mentioned comprehensive properties, especially the color fastness to rubbing is not very high, and it is difficult to meet the needs of various occasions

Method used

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  • A kind of black reactive dye composition, preparation method and application
  • A kind of black reactive dye composition, preparation method and application
  • A kind of black reactive dye composition, preparation method and application

Examples

Experimental program
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Effect test

preparation example Construction

[0050] The preparation method of formula (III-6):

[0051] In the diazo reaction pot, put about 7000 kg of water and ice, put in 2927 kg of weighed para-ester (96% content), beat for about 2 hours, then put 1210 kg of concentrated hydrochloric acid (31% content) , Stir for about 10 minutes, slowly drop into the prepared sodium nitrite solution (718 kg of sodium nitrite industrial product, add about 1800 kg of water, stir to make it completely dissolved), and add in about 60 minutes. During this period, keep the Congo red test paper bright blue, and the KI starch test paper slightly blue. At a temperature of 5°C to 10°C, stir the reaction for about 90 minutes, use sulfamic acid to eliminate excess sodium nitrite, and wait for coupling. Put about 16000L of bottom water in the double dissolving pot, start stirring, add 2100 kg of sodium 2,4-diaminobenzenesulfonate, stir for about 1 hour until it is completely dissolved, adjust the pH to 6.0 with dilute hydrochloric acid, and ret...

Embodiment 1

[0064] Component A of 55 parts by weight of formula (I-1), component B of 15 parts by weight of formula (II-5), component C of 10 parts by weight of formula (III-6) and 20 parts by weight of component C of formula (IV- 1) Component D is mixed with dry powder by a blender to obtain composition 1, which can be used as a reactive black dye to print and dye cotton fabrics in black.

[0065]

[0066]

Embodiment 2

[0068] Component A of 47 parts by weight of formula (I-1), component B of 10 parts by weight of formula (II-5), component C of 8 parts by weight of formula (III-6) and 35 parts by weight of component C of formula (IV- Component D of 1) is mixed with dry powder by a blender to obtain composition 2, which can be used as a reactive black dye to print and dye cotton fabrics in black.

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PUM

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Abstract

The invention discloses a black reactive dye composition. The black reactive dye composition is characterized by comprising a component A shown by a formula (I), a component B shown by a formula (II), a component C shown by a formula (III) and a component D shown by a formula (IV). The invention also discloses a preparation method and an application of the black reactive dye composition. The black reactive dye composition disclosed by the invention is suitable for printing and dyeing cotton, hemp and regenerated fibers or textiles thereof, or printing and dyeing polyamide fibers, cellulose fibers and protein fibers or textiles thereof, is particularly suitable for dyeing cellulose or protein fibers, and has excellent rate of dye-uptake, promoting power, degree of fixation and dyeing reproducibility to ensure that the textiles have good hand feelings, and particularly the color fastness to rubbing is obviously improved.

Description

technical field [0001] The invention belongs to the technical field of dye preparation, in particular to a printing and dyeing method suitable for cotton, hemp, regenerated fibers or their textiles, or dyeing of polyamide fibers, protein fibers or their textiles, especially suitable for cellulose or Black reactive dye composition for dyeing protein fibers. Background technique [0002] According to the properties and application methods of dyes, they are divided into direct dyes, reactive dyes, vat dyes, sulfur dyes, sulfur vat dyes, oxidation dyes, disperse dyes, acid dyes, etc. Among them, reactive dyes are one of the more important dyes. [0003] Reactive dyes, also known as reactive dyes. It is a class of dyes that chemically react with fibers during dyeing. Such dye molecules contain groups that can chemically react with fibers. When dyeing, the dyes react with the fibers and form covalent bonds between them to form a whole, which improves the fastness to washing and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B67/24D06P1/384D06P1/382D06P3/66D06P3/10D06P3/24
Inventor 杨国旗陆军张明省陈锋
Owner ZHEJIANG RUIHUA CHEM