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Castor oil terminated polyurethane water-based ink resin and preparation method thereof

A water-based ink, castor oil technology, applied in ink, household appliances, applications, etc., can solve the problems of poor compatibility, huge application prospects, no good hydrophilic groups, etc., to achieve excellent performance, huge application potential, high Solid and glossy effects

Active Publication Date: 2017-04-26
UNION FOSHAN CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Chinese Patent No. CN 104559460A discloses a water-based polyurethane ink and its preparation process. The preparation method is to mix a certain proportion of polycaprolactone polyol, tetrahydrofuran homopolyether and isophorone diisocyanate, and heat it in a water bath to make After fully reacting, add water-based acrylic color paste, wetting agent, silicone defoamer and water in sequence, and stir and mix evenly with a disperser. Although the water-based ink made by this method has better water resistance, it does not have a good Hydrophilic groups, so there are problems such as poor compatibility with water-based acrylic resins, which affect its application
[0007] In view of the problems encountered in the above-mentioned ink binders, in order to overcome the impact of solvent-based ink binders on the environment and people, as well as the deficiencies in some aspects of existing environmentally friendly ink binders, the present invention realizes a simple process and easy operation , a castor oil-terminated polyurethane water-based ink binder suitable for industrial production. It not only has excellent water resistance, stain resistance and chemical resistance, but also has the advantages of high gloss and good adhesion. It is used in water-based inks and varnishing The application prospect of ink is huge

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A castor oil-terminated polyurethane water-based ink resin, its preparation process is as follows:

[0025] a. In a four-port reactor equipped with a thermometer, condenser, and agitator, according to the weight percentage of the formula, add 2.5 parts of butanediol, 18.0 parts of polytetrahydrofuran polyol, 8.0 parts of refined castor oil, dimethylol 2.0 parts of propionic acid, heated to 95-110°C for vacuum dehydration for 1.5-2.0 hours;

[0026] b. Cool down to 60-70°C, add 16.0 parts of isophorone diisocyanate dropwise, and complete the dropwise addition in 0.5-1h; then add 0.02 parts of dibutyltin dilaurate dropwise, heat up to 80-82°C and react for 2-2.5h , add 3.0 parts of acetone, measure the NCO value, and terminate the reaction when the measured value is close to the theoretical design value;

[0027] c. Continue stirring to lower the temperature below 40°C, slowly add 1.5 parts of neutralizing agent triethylamine dropwise, continue to stir for 20 minutes, ad...

Embodiment 2

[0029] A castor oil-terminated polyurethane water-based ink resin, its preparation process is as follows:

[0030] a. In a four-port reactor equipped with a thermometer, a condenser, and an agitator, add 2.0 parts of propylene glycol, 20.0 parts of polyether glycol, 10.0 parts of refined castor oil, and dimethylolpropane in sequence according to the weight percentage of the formula. 2.5 parts of acid, heated to 95-110°C for vacuum dehydration for 1.5-2.0 hours;

[0031] b. Cool down to 60-70°C, add 15.0 parts of hexamethylene diisocyanate dropwise, and complete the dropwise addition in 0.5-1h; then add 0.03 parts of dibutyltin dilaurate dropwise, heat up to 80-82°C and react for 2-2.5h , add 4.0 parts of acetone, measure the NCO value, and stop the reaction when the measured value is close to the theoretical design value;

[0032] c. Continue stirring to lower the temperature below 40°C, slowly add 0.8 parts of neutralizing agent ammonia water dropwise, continue to stir for 1...

Embodiment 3

[0034] A castor oil-terminated polyurethane water-based ink resin, its preparation process is as follows:

[0035] a. In a four-port reactor equipped with a thermometer, a condenser, and an agitator, according to the weight percentage of the formula, 3.5 parts of dipropylene glycol, 18.0 parts of polyethylene oxide polyol, 11.0 parts of refined castor oil, 2.0 parts of dimethylolpropionic acid, heated to 95-110°C for vacuum dehydration for 1.5-2.0 hours;

[0036] b. Cool down to 60-70°C, add 18.0 parts of isophorone diisocyanate dropwise, and complete the dropwise addition in 0.5-1h; then add 0.03 parts of dibutyltin dilaurate dropwise, heat up to 80-82°C and react for 2-2.5h , add 3.0 parts of acetone, measure the NCO value, and terminate the reaction when the measured value is close to the theoretical design value;

[0037] c. Continue stirring to lower the temperature below 40°C, slowly add 1.5 parts of neutralizing agent triethylamine dropwise, continue to stir for 20 min...

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PUM

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Abstract

The invention relates to castor oil terminated polyurethane water-based ink resin. The castor oil terminated polyurethane water-based ink resin is prepared from the following components: 10.0 to 20.0 parts of polyisocyanate, 2.0 to 5.0 parts of dihydric alcohol, 12.0 to 25.0 parts of oligomer polyhydric alcohol, 1.0 to 3.0 parts of dimethylolpropionic acid, 6.0 to 12.0 parts of refined castor oil, 0.01 to 0.2 part of dibutyltin dilaurate, 2.0 to 6.0 parts of acetone, 0.5 to 3.0 parts of neutralizing agent and 40.0 to 60.0 parts of deionized water. The invention further provides a preparation method of the castor oil terminated polyurethane water-based ink resin. The prepared castor oil terminated polyurethane water-based ink resin has the characteristics of high adhesion, high flexibility, high solid content, high gloss and the like, is safe to use, is environment-friendly, and has great application potential.

Description

technical field [0001] The invention relates to a water-based resin, in particular to a castor oil-terminated polyurethane water-based ink resin and a preparation method thereof, belonging to the technical field of water-based resins. Background technique [0002] In recent years, the improvement of people's living standards has led to the rapid growth of the packaging industry, and also promoted the continuous development of composite ink technology and the market. Ink is an important material for packaging material printing, which is mainly composed of pigments, linking materials and additives. Composition, the composite ink used for gravure printing has been widely used in plastic packaging, such as packaging of various plastic film substrates in food, medicine, agricultural and sideline products, daily necessities and other industries, and its application range covers almost all packaging field. The ink binder currently used is mainly solvent-based polyurethane. Solvent...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/08C08G18/32C08G18/34C08G18/36C08G18/48C09D11/102
CPCC08G18/0823C08G18/3206C08G18/348C08G18/36C08G18/4825C08G18/4854C08G18/6696C09D11/102
Inventor 张武许钧强康伦国姚东生
Owner UNION FOSHAN CHEM
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