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Olive green cationic dye and its preparing method

A technology of cationic dyes and cationic precursors, which is applied in the field of olive green cationic dyes and its preparation, can solve the problems of poor reproducibility, level dyeing, troublesome operation, etc., and achieve the effects of easy operation, high dyeing rate and good compatibility

Inactive Publication Date: 2003-10-01
上海市染料研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to obtain olive green, printing and dyeing enterprises usually use yellow, red and blue positive dyes to blend together. The operation is troublesome, the reproducibility is poor, and sometimes there will be problems with level dyeing

Method used

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  • Olive green cationic dye and its preparing method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add 18.0 grams (0.1 moles) of 2-amino-6-methoxybenzothiazole and 260 grams of 30% sulfuric acid into the flask, stir to dissolve, add 0.4 grams of Swire oil after cooling, and 64 grams of Nitrosyl sulfuric acid composed of 93% sulfuric acid and 7.7 grams of sodium nitrite was slowly added, about 1 hour, stirred for 2 hours after the addition, diluted into 600 milliliters of ice water for later use. In another beaker, add 22.2 grams (0.1 moles) of N-ethyl-N-(N', N'-dimethylaminopropyl) aniline oxide and 25 grams of 30% sulfuric acid, 45 milliliters of water, stir to dissolve , add this coupling liquid to the above-mentioned diazo compound dilution below 5°C, stir for 2 hours to couple, after the end point is reached, slowly add about 340 grams of 30% liquid caustic soda for neutralization, so that the heterocyclic azo compound is precipitated, Filter and wash until neutral. Add this heterocyclic azo compound into a flask with 180 grams of chloroform and 2.4 grams of mag...

Embodiment 2

[0025] Add 19.4 grams (0.1 moles) of 2-amino-6-ethoxybenzothiazole, 76 grams of 98% sulfuric acid, and 160 grams of water into the flask, stir to dissolve, and dissolve 61 grams of 98% sulfuric acid at 0°C to 5°C Sulfuric acid and nitrosylsulfuric acid composed of 7.7 grams of dry sodium nitrite were added slowly for about 1.5 hours, stirred for 2 hours after the addition, and diluted into 600 milliliters of ice water for later use. In another beaker, add 25.6 grams (0.1 moles) of N-ethyl-N-(N', N', N'-trimethylaminopropyl) aniline chloride and 25 grams of 30% hydrochloric acid, 40 milliliters of water to make Stir to dissolve, add this coupling solution to the above-mentioned diazonium dilute solution below 5°C, stir for 2 hours to couple, after the end point is reached, slowly add about 330 grams of 30% liquid caustic soda for neutralization, and then salt out to make the heterocyclic Azo compounds were precipitated, filtered and dried. Add this heterocyclic dichloro dye to...

Embodiment 3

[0027] Except that the coupling component in embodiment 1 is replaced by 20.6 grams (0.1 moles) of N-ethyl-N-(N', N'-dimethylaminopropyl) aniline, all the other steps, formulas and reaction parameters are the same Embodiment 1, obtain 35 grams of former dyestuffs, make commodity dyestuffs through commercialization again.

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Abstract

A cationic olive-green dye for polyacrylonitrile fibres and its blended fabrics is prepared through diazotizing reaction bentween 2-amino substituted benzothiazole and nitrosyl sulfate, adding substituted phenyl amino compound, coupling reaction, dissolving the resultant in inertial organic solvent, adding quaternary ammonifying agent, quaternary ammonifying reaction, distilling, decolouring, filtering and drying. Its advantages are high colouring intension, excellent color fastness and good color compatibility.

Description

technical field [0001] The invention relates to an olive green cationic dye used for dyeing and printing polyacrylonitrile fiber and its blended fabric, in particular to an olive green cationic dye and a preparation method thereof. Background technique [0002] Cationic dyes are special dyes for the dyeing and printing of polyacrylonitrile fibers and fabrics and blended fabrics made of other fibers. They have bright color, excellent application performance, convenient use, and high exhaustion rate. In recent years, with the rapid development of textile fiber technology and printing and dyeing technology, especially the strict regulations on green textiles, higher requirements have been put forward for cationic dyes. Olive green with excellent performance and environmental quality indicators is one of the requirements. U.S. Patent USP4563191 discloses two kinds of green cationic dyes, and its structural formula is as follows: They are green cationic dyes with a single struc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B29/045
Inventor 章杰
Owner 上海市染料研究所
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