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Plastic colorant GG orange and preparation method thereof

A technology for colorants and plastics, applied in the field of plastic colorants and their preparation, can solve the problems of reduced product purity, high reaction temperature, poor hue, etc., and achieve the effects of high product purity, uniform reaction and good properties.

Inactive Publication Date: 2020-12-22
刘燕
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The temperature resistance of GG orange currently on the market is generally 220 degrees, and the coloring rate is generally 70-80%. The reaction temperature is too high, there are many by-products, the hue is not good, and the product purity is reduced.

Method used

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  • Plastic colorant GG orange and preparation method thereof
  • Plastic colorant GG orange and preparation method thereof
  • Plastic colorant GG orange and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of plastic colorant GG orange is prepared from the following raw materials in parts by weight:

[0031] 800 parts of N,N-dimethylformamide, 195 parts of hydrochloric acid, 108 parts of water, 235 parts of 3-(2-aminophenylmercapto)benzoanthrone, 47 parts of 30% sodium nitrite aqueous solution, catalyst copper catalase 0.8 servings.

[0032] A kind of preparation method of plastic coloring agent GG orange, concrete steps are as follows:

[0033] (1) Weigh N, N-dimethylformamide, hydrochloric acid and 1 / 4 water into the reaction kettle in sequence, and then put 3-(2-aminophenylmercapto) benzoanthrone into the reaction kettle. Pass frozen brine through the jacket to lower the temperature in the reactor to 5°C, then add sodium nitrite aqueous solution to the reactor dropwise, the rate of addition is slow first and then fast, and the amount of addition is 25-50kg / h. Insulate and react at 15°C for 2 hours, press filter to obtain the filtrate for later use;

[0034] (...

Embodiment 2

[0038] A kind of plastic colorant GG orange is prepared from the following raw materials in parts by weight:

[0039] 780 parts of N,N-dimethylformamide, 200 parts of hydrochloric acid, 105 parts of water, 240 parts of 3-(2-aminophenylmercapto)benzoxanthrone, 50 parts of 28% sodium nitrite aqueous solution, catalyst copper catalase 0.6 parts.

[0040] A kind of preparation method of plastic coloring agent GG orange, concrete steps are as follows:

[0041] (1) Weigh N, N-dimethylformamide, hydrochloric acid and 1 / 5 water into the reaction kettle in sequence, and then put 3-(2-aminophenylmercapto) benzoanthrone into the reaction kettle. Pass frozen brine through the jacket to lower the temperature in the reactor to 6°C, then add sodium nitrite aqueous solution to the reactor dropwise, the rate of addition is slow at first and then fast, and the amount of addition is 25-50kg / h. Insulate and react at 10°C for 2.5 hours, press filter to obtain the filtrate for later use;

[0042...

Embodiment 3

[0046] A kind of plastic colorant GG orange is prepared from the following raw materials in parts by weight:

[0047] 820 parts of N,N-dimethylformamide, 190 parts of hydrochloric acid, 110 parts of water, 230 parts of 3-(2-aminophenylmercapto)benzoanthrone, 45 parts of 32% sodium nitrite aqueous solution, catalyst copper catalase 0.9 servings.

[0048] A kind of preparation method of plastic coloring agent GG orange, concrete steps are as follows:

[0049] (1) Weigh N,N-dimethylformamide, hydrochloric acid and 1 / 3 water into the reaction kettle in sequence, and then put 3-(2-aminophenylmercapto)benzenthrone into the reaction kettle. Pass frozen brine through the jacket to lower the temperature in the reactor to 3°C, then add sodium nitrite aqueous solution to the reactor dropwise, the rate of addition is slow first and then fast, and the amount of addition is 25-50kg / h. Insulate and react at 20°C for 1.5 hours, press filter to obtain the filtrate for later use;

[0050] (2...

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Abstract

The invention provides a plastic colorant GG orange and a preparation method thereof. The plastic colorant GG orange comprises the following components in parts: 780-820 parts of N, N-dimethylformamide, 190-200 parts of hydrochloric acid, 105-110 parts of water, 230-240 parts of 3-(2-aminophenylmercapto)benzanthrone, 45-50 parts of 28-32% sodium nitrite aqueous solution and 0.6-0.9 part of catalyst. The preparation method comprises the following steps of weighing N, N-dimethylformamide, hydrochloric acid and water, pumping into a reaction kettle, adding 3-(2-aminophenylmercapto)benzanthrone, introducing frozen brine to reduce the temperature to 3-6 DEG C, dropwise adding 25-50 kg / h of a sodium nitrite aqueous solution, carrying out a heat preservation reaction at 10-20 DEG C under normal pressure for 1.5-2.5 h, and carrying out filter pressing to obtain a filtrate, transferring the filtrate into a closed-loop kettle, adding copper catalase, heating to 75-85 DEG C, keeping the temperature for 2.5-3.5 hours, and carrying out filter pressing to obtain a filter cake, adding the filter cake into a pulping kettle, adding the residual water, pulping for 1.5-2.5 hours, putting into a suction filtration cylinder, carrying out vacuum suction filtration, rinsing with hot water until the pH value is 7-9, drying the filter cake, powdering, blending and packaging to obtain the product. The finished product prepared by the method has the characteristics of high temperature resistance, high transparency, strong fluorescence, high coloring rate and the like, side reactions in the preparation process are few, and the product purity is high.

Description

technical field [0001] The invention relates to the technical field of plastic colorants and preparation methods thereof, in particular to a plastic colorant GG orange and a preparation method thereof. Background technique [0002] In the plastic processing technology, plastic colorants, as a raw material, can beautify, decorate, facilitate identification, improve weather resistance, improve mechanical properties, and improve optical properties. Divided into inorganic pigments, organic pigments and dyes. Among them, pigment refers to a substance that can make an object dyed with color. Pigments are soluble and insoluble, and there are inorganic and organic differences. It is mainly used in coatings, inks, printing and dyeing, plastic products, papermaking, rubber products and ceramics. With the rapid development of downstream industries, the demand for pigments continues to expand. The development prospects of China's pigment industry are very broad. [0003] Fluorescent ...

Claims

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Application Information

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IPC IPC(8): C07D335/04
CPCC07D335/04
Inventor 刘燕
Owner 刘燕
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