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Red anthraquinone compound and application thereof

A technology of anthraquinones and compounds, which is applied in the field of water-based polyurethane emulsion synthesis, to achieve obvious color rendering effect, improved performance, and stable color paste

Pending Publication Date: 2022-06-03
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of red anthraquinone compound and application thereof, to solve the technical defect that small molecule dye exists in the prior art

Method used

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  • Red anthraquinone compound and application thereof
  • Red anthraquinone compound and application thereof
  • Red anthraquinone compound and application thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0026] Its preparation method comprises the following steps:

[0027] (1) Add 1,5-dichloroanthraquinone into a three-necked flask, slowly add 3-amino-1-propanol at room temperature, and stir to fully mix and dissolve it.

[0028] (2) After mixing and dissolving, continue to stir and start heating. After raising the temperature to 100-120°C, start constant temperature heating for 10-13h.

[0029] (3) After the reaction, add deionized water to wash the precipitate, and finally recrystallize to obtain the product.

[0030] The red water-based polyurethane color paste is prepared by using the red anthraquinone compounds provided by the present invention, and the present invention provides the following examples.

example 1

[0031] Example 1: Preparation of red water-based polyurethane color paste

[0032] 1. After the polytetrahydrofuran ether diol is decompressed to remove moisture, 20g and 14g of isophorone diisocyanate (IPDI) are weighed, added to the there-necked flask, heated to 85~90°C for reaction, the reaction system is fed with nitrogen protection React at 85~90℃ for 1~2h;

[0033] 2. Cool the reaction system obtained in step 1 to 60°C, dissolve 0.037g DYE-R and 1.94g 1,4-butanediol in a small amount of acetone, then add the reaction system, drop a drop of catalyst stannous octoate, and then heat up to 75 React at ~85℃ for 2~3h under nitrogen protection, add acetone during the reaction to adjust the viscosity, and adjust the viscosity of the reaction system to 15.0mPa·s-30mPa·s;

[0034] 3. Cool the reaction system in step 2 to 60°C, add 1.6g of 2,2-dimethylolbutyric acid, then add acetone to adjust the viscosity, adjust the viscosity of the reaction system to 15.0mPa·s-30mPa·s, and int...

Embodiment 2

[0037] Example 2: Preparation of red water-based polyurethane color paste

[0038] 1. After the polytetrahydrofuran ether diol is decompressed to remove moisture, 20g and 14g of isophorone diisocyanate (IPDI) are weighed, added to the there-necked flask, heated to 85~90°C for reaction, the reaction system is fed with nitrogen and protected at React at 85~90℃ for 1~2h;

[0039] 2. Cool down the reaction system in step 1 to 60°C, dissolve self-made 0.11g DYE-R and 1.92g 1,4-butanediol in a small amount of acetone, add the reaction system, then drop a drop of catalyst, and heat up to 75~85°C The reaction is carried out for 2 to 3 hours, and acetone is added to adjust the viscosity during the reaction, and the viscosity of the reaction system is adjusted to 15.0mPa·s-30mPa·s;

[0040] 3. Cool the reaction system in step 2 to 60°C, add 1.6g of 2,2-dimethylolbutyric acid, then add acetone to adjust the viscosity, introduce nitrogen protection and react at 75~85°C for 2~3h, the reac...

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Abstract

The invention discloses a red anthraquinone compound and application thereof, relates to the field of waterborne polyurethane emulsion synthesis, and provides the red anthraquinone compound with the structural formula shown in the specification. A method for preparing red waterborne polyurethane color paste by using the red anthraquinone compound comprises the following steps: reacting polyether polyol serving as a raw material with diisocyanate to obtain a prepolymer; the preparation method comprises the following steps: carrying out chain extension on a prepolymer by using an anionic chain extender and the red anthraquinone compound, adding triethylamine to neutralize into salt and emulsify after completing prepolymerization and chain extension, adding a small molecule chain extender to carry out post chain extension, and removing an organic solvent from the prepared polyurethane emulsion to finally obtain the red waterborne polyurethane color paste. According to the red waterborne polyurethane disclosed by the invention, a chromophoric group is synthesized into a polyurethane molecular chain through a chemical reaction, so that the problems that pigment particles and polyurethane resin are poor in compatibility, unstable in dispersion and easy to migrate are solved.

Description

technical field [0001] The invention relates to the field of water-based polyurethane emulsion synthesis, in particular to a material for preparing red water-based polyurethane color paste and its application. Background technique [0002] Most of the dyes currently used in industry are small-molecule dyes. Small-molecule dyes are inferior to polymers in terms of solvent resistance, heat resistance, and migration resistance, and they will pollute the environment during use. When the small molecule dye is blended with the resin, the compatibility of the small molecule dye with the water-based polyurethane matrix is ​​not controlled. Even if it is dispersed evenly, because the small molecule dye has a weak binding force with the dyed matrix, it is easy to migrate to the material during use. The surface is enriched, causing the dyes to fall off and fade, causing harm to the environment and human body. Therefore, it is urgent to polymerize small-molecule dyes. Waterborne polyur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C225/34C09B1/28C08G18/10C08G18/32C09D17/00
CPCC07C225/34C09B1/285C08G18/10C09D17/003C07C2603/24C08G18/3275
Inventor 杨建军胡继广吴庆云吴明元张建安刘久逸
Owner ANHUI UNIVERSITY
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