Directly blending rose dye and its preparing process

A preparation process and technology of red dye, applied in the field of direct blended rose red dye and preparation process thereof, can solve problems such as lack of chromatography

Inactive Publication Date: 2007-01-24
吴江市罗林染化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is also a lot of color spectru...

Method used

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  • Directly blending rose dye and its preparing process
  • Directly blending rose dye and its preparing process
  • Directly blending rose dye and its preparing process

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Embodiment 1

[0031] The preparation technology of direct blending rose red D-FR dyestuff comprises the following steps:

[0032] (1) The first condensation reaction: Add 0.1mol of cyanuric chloride to 3.4mol of water and 80g of crushed ice, stir and beat for 20 minutes, control the temperature at 0-2 degrees Celsius, and then add it dropwise within 1.5 hours 1-amino-8 naphthol-3,6 disulfonic acid solution, described 1-amino-8 naphthol-3,6 disulfonic acid solution is 1-amino-8 naphthol-3,6 by 0.098mol Disulfonic acid, join in the water of 12mol, adjust temperature and be 25-30 degree centigrade, add concentration and be 30% sodium hydroxide solution and adjust pH value to be 6-6.5, temperature remains on 0-5 degree centigrade, makes 1-amino-8 naphthalene Phenol-3, the solution prepared when all 6 disulfonic acids are fully dissolved, then use a 15% sodium carbonate solution to maintain the pH value of the reaction at 3-3.2, continue the reaction for 3 hours, and use indicator p-dimethylamin...

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Abstract

The directly blending rose dye in the shown chemical structure is prepared through the technological process including the first condensation reaction, aniline diazoniation, coupling reaction, the second condensation reaction and the third condensation reaction. The directly blending rose dye contains no carcinogenic chemical, and may be used in dyeing cellulose, polyester/cotton blended fiber, and polyester/viscose blended fiber. It has the advantages of reduced dyeing steps, shortened dyeing time, reduced dyeing waste water exhaust, lowered dyeing power consumption, lowered dyeing cost, increased dyeing yield.

Description

technical field [0001] The invention mainly relates to a direct blending dye and a preparation process thereof. Background technique [0002] The application of direct blended dyes is becoming more and more extensive. In addition to polyester / cotton and polyester / viscose blends, it can also be used for wool / viscose, brocade / viscose, nitrile / cotton, nitrile / viscose and other blended fabrics. At present, 28 varieties of D-type dyes for direct blending have been developed, such as yellow D-2RL, yellow D-3RNL, ruby ​​D-BLL, navy blue D-R, brown D-RS, etc., which can be mixed with disperse dyes for polyester / One-bath dyeing of cotton, polyester / viscose, also can be used for conventional dyeing. Most of the direct blend dye varieties can be used as both direct blend dyes and direct light fast dyes. There is also a lot of color spectrum that is lacking in this direct blend D dye range. Contents of the invention [0003] The ...

Claims

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Application Information

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IPC IPC(8): C09B29/36D06P1/04D06P3/85
Inventor 严国荣黄可萍谢家麟
Owner 吴江市罗林染化有限公司
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