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Yellow pigment compositions

A composition and dye technology, applied in the direction of organic dyes, etc., can solve the problems of poor dye depth, poor solubility, and inability to fully satisfy, and achieve the effects of excellent solubility and excellent sunlight fastness.

Inactive Publication Date: 2006-12-27
ETHICAL INT WAREHOUSING TRADING SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Direct yellow dyes have been widely used in the paper industry for many years, but their main hue, concentration, solubility, high fastness, and economical dyeing properties cannot be fully satisfied. It is expected that there will be improved products. For example, in the Japanese patent special Kaizhao 55-36208 disclosed a yellow dye for paper, which has excellent characteristics such as bright hue, good light fastness and not easy to fade, and is widely used in the paper industry, but it has poor dyeing depth and solubility Poor and other shortcomings need to be improved

Method used

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  • Yellow pigment compositions
  • Yellow pigment compositions
  • Yellow pigment compositions

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0035] 33.5 parts of 4-amino-3-methoxyazobenzene-3'-sulfonic acid (4-Amino-3-methoxyazobenzene-3'-sulfonic acid), fully stirred and dissolved in 175 parts of water at room temperature , add ice to cool down to 0-5°C, add 20.25 parts of Cyanuric chloride (C.C) to the above solution for the first condensation reaction, slowly adjust the reaction pH to 4-4.5 with baking soda powder, and keep stirring until the reaction is complete Then, add 33.5 parts of 4-amino-3-methoxyazobenzene-4'-sulfonic acid (4-Amino-3-methoxyazobenzene-4'-sulfonic acid) to the reaction solution for the second time Condensation reaction, heat up to 40-65°C, slowly adjust the reaction pH to 5-7 with baking soda powder, and continue to stir until the reaction is complete, then add 17.0 parts of diethanolamine (Diethanolamine), and use soda ash to control the pH at 8-9.5, The temperature is controlled at 80-100°C, and the mixture is stirred until the third condensation reaction is completed to obtain compound...

Embodiment 1

[0038] Take 85 parts of the aforementioned dye of formula (I) and 15 parts of the aforementioned dye of formula (II), and mix them uniformly to obtain a dye composition.

Embodiment 2

[0040] Take 75 parts of the aforementioned dye of formula (I) and 25 parts of the aforementioned dye of formula (III), and mix them uniformly to obtain a dye composition.

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PUM

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Abstract

The invention relates the yellow dye compound, comprising disazo dyes, (I), (II) or (III). The product has the advantages of good dye liquid soundness, storage soundness, dissolving, and good fastness to light.

Description

technical field [0001] The present invention relates to a dye composition, especially a novel yellow dye composition suitable for dyeing and printing of cellulose fibers, especially for paper and pulp. Background technique [0002] Direct yellow dye has been widely used in the paper industry for many years, but its main hue, concentration, solubility, high fastness, and economical dyeability cannot be fully satisfied. It is expected that there will be improved products. For example, in the Japanese patent special Kaizhao 55-36208 disclosed a yellow dye for paper, which has excellent characteristics such as bright hue, good light fastness and not easy to fade, and is widely used in the paper industry, but it has poor dyeing depth and solubility Poor and other shortcomings must be improved. [0003] However, there remains a need to provide other substantive dyes, especially neutral or greenish yellow, which can exhibit excellent depletion with high color strength, while being...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B67/36
CPCC09B67/0055
Inventor 叶明媚陈勋振孙立平
Owner ETHICAL INT WAREHOUSING TRADING SHANGHAI
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