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A kind of red organic colorant applied to resin coloring and preparation method thereof

A technology of organic colorants and organic solvents, applied in the field of red organic colorants and their preparation, can solve the problems of inability to form crystallinity, difficulty in solving resin coloring, and lack of steel structure, etc., and achieve good temperature resistance and good durability Heat resistance, satisfying the effect of temperature resistance

Active Publication Date: 2021-02-05
SHENYANG RES INST OF CHEM IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] However, the above research is still water-soluble dyes, the main application field is digital inkjet printing
And the bridge base of the symmetrical part is a flexible segment without a rigid structure, so it cannot form a certain degree of crystallinity, and it is difficult to solve the problem of resin coloring

Method used

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  • A kind of red organic colorant applied to resin coloring and preparation method thereof
  • A kind of red organic colorant applied to resin coloring and preparation method thereof
  • A kind of red organic colorant applied to resin coloring and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The reaction formula is:

[0058]

[0059] Wherein: X is selected from Br; R is selected from -H.

[0060] In a 250 mL four-necked flask, 7.1 parts of 6-bromo-N-methyl-anthrapyridone, 1.87 parts of benzomelamine, 0.42 parts of cuprous iodide and 90 mL of alkylbenzene were added. Raise the temperature to 170°C, keep the reaction for 30 minutes, then gradually add 2.1 parts of sodium bicarbonate in portions to adjust the pH of the reaction, and react at a temperature of 165°C to 170°C for 12 hours. The complete disappearance of the reactant was traced by liquid chromatography, and the temperature was lowered to 90-95°C. Filter to recover the alkylbenzene mother liquor. Wash the filter cake with a small amount of ethanol until the filtrate is colorless, and recover the washing liquid. Wash the filter cake with water until the pH is neutral, and move to the next step.

[0061] Take the filter cake and add 100 ml of butanol solution, stir well for 2 hours, then raise ...

Embodiment 2

[0063] The difference from Example 1 is that in the above preparation process, cuprous chloride was used instead of cuprous iodide as a catalyst, and the operation steps of Example 1 were repeated to obtain about 5.9 grams of dry powder. Appearance: Brilliant red powder, yield 83.7%.

Embodiment 3

[0065] The difference from Example 1 is that o-dichlorobenzene is used instead of alkylbenzene as a solvent, and in a 250mL four-necked flask, 6.8 parts of 6-bromo-N-methyl-anthrapyridone, 1.87 parts of benzomelamine, Add 0.42 parts of catalyst cuprous iodide, add 80 ml of o-dichlorobenzene solution, raise the temperature to 170 ° C, keep warm for reaction, add 2.1 parts of acid-binding agent sodium bicarbonate in stages, adjust the pH of the reaction, react for 12 hours, and perform liquid chromatography It shows that the consumption of raw materials in the system is complete, and the reaction ends. Cool down to 90-95°C, filter, wash with o-dichlorobenzene until the filtrate is basically colorless, then wash with alcohol and water until neutral to obtain a wet filter cake, and recover the filtrate.

[0066] Take the filter cake and add 100 ml of butanol solution, fully stir for 2 hours, heat up to reflux, keep warm and reflux for 3 hours, cool down and filter, wash with water...

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Abstract

The invention relates to a red organic coloring agent used in resin coloring and a preparation method thereof. The general structural formula is shown in I: in the formula, R represents a hydrogen atom, an alkyl group, an alkoxy group and a halogen atom, etc. The red coloring agent of the present invention is bright yellow and bright red, has excellent heat resistance, solvent resistance and easy dispersibility, and has good migration resistance when applied to resin coloring.

Description

technical field [0001] The invention belongs to the field of organic colorants, and in particular relates to a red organic colorant with high temperature resistance, migration resistance and easy dispersion, which is applied to resin coloring and a preparation method thereof. Background technique [0002] The development of material science has higher and higher requirements for the performance of colorants. In addition to excellent weather resistance, light resistance and various chemical resistance, it also has an impact on the temperature resistance of colorants, migration resistance in resins and dispersibility. higher requirement. Part of the organic colorant is various dyes and solvent dyes with certain water solubility or solvent solubility, and the other part is pigments that are insoluble in water and various application media. Resin coloring can only be solvent dyes and pigments, and water-soluble dyes cannot be used. Although there are many commercial products o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/3492C08L67/02C08J3/20C07D401/14
CPCC07D401/14C08J3/20C08J2367/02C08K5/3492
Inventor 王永华潘家辉李文骁罗鸿椾马瑛孙伟辰
Owner SHENYANG RES INST OF CHEM IND
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