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Preparation method of reduced dye vat yellow 1

A technology for dyes and materials, applied in the field of preparation of vat dye vat yellow 1, can solve the problems of low coloring rate, general application performance, application limitations, etc., and achieve the effects of improving purity, improving grinding efficiency, and improving quality

Active Publication Date: 2016-12-14
安徽融创化工科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the vat yellow 1 currently available on the market has a low coloring rate and general application performance, so its application is limited to a certain extent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The preparation method of vat dye vat yellow 1 comprises the following steps:

[0017] 1) Grinding: adding crude Vat Yellow 1 to a grinder, adding 0.4% carboxymethyl chitosan by mass of Crude Vat Yellow 1 to it, and grinding until the particle size is 2 μm to obtain a ground material;

[0018] 2) Kneading: put the grinding material into a kneader, add 3.5 times of sodium chloride micropowder of crude vat yellow 1 quality to it, stir and mix, then add hexamethylphosphoramide equal to the crude vat yellow 1 quality, Stir and mix, knead at 40°C and 30rpm for 0.5h, raise the temperature to 70°C at a heating rate of 2°C / min, knead for 1.5h at a speed of 35rpm, raise the temperature to 90°C at a heating rate of 1°C / min, Keep the speed constant and knead for 1.5h, keep the temperature constant and adjust the speed to 40rpm and knead for 1h to get the kneaded mixture material;

[0019] 3) Extraction: add deionized water to the kneading mixture, filter with suction, wash with w...

Embodiment 2

[0021] The preparation method of vat dye vat yellow 1 comprises the following steps:

[0022] 1) Grinding: adding the crude product Vat Yellow 1 into a grinder, adding 0.3% carboxymethyl chitosan by mass of the crude product Vat Yellow 1 therein, and grinding to a particle size of 2 μm to obtain a grinding material;

[0023] 2) Kneading: Add the grinding material into the kneader, add 3 times of the crude product vat yellow 1 mass of sodium chloride micropowder to it, stir and mix, then add 0.9 times of the crude product vat yellow 1 mass of hexamethylphosphoramide, Stir and mix, knead at 40°C and 30rpm for 0.5h, raise the temperature to 70°C at a heating rate of 2°C / min, knead for 1.5h at a speed of 35rpm, raise the temperature to 90°C at a heating rate of 1°C / min, Keep the speed constant and knead for 1.5h, keep the temperature constant and adjust the speed to 40rpm and knead for 1h to get the kneaded mixture material;

[0024] 3) Extraction: add deionized water to the knea...

Embodiment 3

[0026] The preparation method of vat dye vat yellow 1 comprises the following steps:

[0027] 1) Grinding: adding the crude product Vat Yellow 1 into a grinder, adding 0.5% carboxymethyl chitosan by mass of the crude product Vat Yellow 1 therein, and grinding to a particle size of 3 μm to obtain a grinding material;

[0028] 2) Kneading: adding the ground material into a kneader, adding 4 times the mass of crude vat yellow 1 mass of sodium chloride micropowder to it, stirring and mixing, then adding 1.1 times the mass of crude vat yellow 1 mass of hexamethylphosphoramide, Stir and mix, knead at 40°C and 30rpm for 0.5h, raise the temperature to 70°C at a rate of 2°C / min, knead for 1.5h at a rate of 35rpm, and raise the temperature to 90°C at a rate of 1°C / min. Keep the speed constant and knead for 1.5h, keep the temperature constant and adjust the speed to 40rpm and knead for 1h to get the kneaded mixture material;

[0029] 3) Extraction: add deionized water to the kneading mi...

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PUM

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Abstract

The invention discloses a preparation method of a reduced dye vat yellow 1. The preparation method comprises the following steps: grinding, kneading and extraction. Through pregrinding and segmented shearing actions, the prepared vat yellow 1 has good vibrance and tinting strength, and the quality of the product is obviously improved, so that the use values of the vat yellow 1 is enhanced.

Description

technical field [0001] The invention relates to the technical field of vat dyes, in particular to a preparation method of vat dye Vat Yellow 1. Background technique [0002] Vat dyes are dyes with excellent properties in all dyes. They are insoluble in water. They are reduced by sodium dithionite (sodium hydrosulfite) in alkaline solution to dye fibers. There are many varieties of vat dyes, complete chromatograms, bright colors, good color fastness, good washing fastness and light fastness, and can be widely used in cotton, wool, silk, linen, synthetic fibers and their blends. Printing and dyeing of fabrics and interlaced fabrics. Vat Yellow 1, also known as vat G, is an orange or golden yellow powder, soluble in hot nitrobenzene, insoluble in water, acetone, ethanol, toluene or chloroform, with high transparency and fastness to light and weather, mainly used It is used in the dyeing and printing of cotton, dimensional and dimensional / cotton, polyester / cotton. It has good ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B5/22C09B67/28
CPCC09B5/22C09B67/0077
Inventor 王洪卫徐卉香李振蒋大为高鸿宇郭元
Owner 安徽融创化工科技股份有限公司
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