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Sulfonate type ultraviolet curing waterborne polyurethane and preparation method thereof

A water-based polyurethane and sulfonate-based technology, applied in polyurea/polyurethane coatings, polyurea/polyurethane adhesives, adhesive types, etc., can solve the problems of low solid content of products, VOC polluting the environment, endangering human health, etc. problem, to achieve the effect of high hardness and simplified process flow

Inactive Publication Date: 2020-06-09
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the process is mature, the solid content of the product is low, and organic solvents and organic amine neutralizers are still needed to be added during the synthesis process, which will release VOC to pollute the environment and endanger human health

Method used

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  • Sulfonate type ultraviolet curing waterborne polyurethane and preparation method thereof
  • Sulfonate type ultraviolet curing waterborne polyurethane and preparation method thereof

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Embodiment Construction

[0017] In order to enable those skilled in the art to fully understand the technical solution of the present invention, further description will be given below in conjunction with specific examples.

[0018] A kind of preparation method of sulfonate type ultraviolet light curing waterborne polyurethane, concrete steps are as follows:

[0019] 1) Add methacrylic acid, diglycidyl ester, catalyst A, and polymerization inhibitor into the reactor and stir evenly. Heat the resulting mixture to 100-120°C and keep it warm for reaction. Test the acid value every 1 hour until the acid value of the system is less than 2mg Stop reaction after KOH / g, obtain UV macromonomer;

[0020] 2) Add UV macromonomer, polyester diol, sulfonate hydrophilic monomer, and small molecule polyol into the reactor and stir evenly. The resulting mixture is heated to 100-120°C and vacuumed to -0.05MPa to - 0.07MPa, dehydration about 1h;

[0021] 3) Remove the vacuum and lower the temperature to 50-70°C, drop ...

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Abstract

The invention relates to sulfonate type ultraviolet curing waterborne polyurethane and a preparation method thereof. The preparation method comprises the following steps: taking acrylic acid, diglycidyl ether and a polymerization inhibitor as raw materials, performing a catalytic reaction at 100-120 DEG C to synthesize a UV macromonomer containing unsaturated double bonds, and performing the catalytic reaction on the UV macromonomer, polyester diol, a sulfonate hydrophilic monomer, micromolecular polyol and diisocyanate to finally obtain a target product. Compared with the existing similar products, the sulfonate type ultraviolet curing waterborne polyurethane provided by the invention has the advantages of high solid content, zero VOC emission, no amine smell and the like, and a cured adhesive film is high in gloss and hardness and good in water resistance and solvent resistance.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a sulfonate type ultraviolet light curing waterborne polyurethane and a preparation method thereof. Background technique [0002] As a new type of coating with environmental protection and excellent performance, water-based UV-curable coating has been widely used in furniture decoration, automobile industry, construction industry, communication industry, coating printing, medical development and other fields. [0003] At present, the most researched system in waterborne UV-curable coatings is UV waterborne polyurethane acrylate resin, which is usually prepared from dimethylolpropionic acid (DMPA) hydrophilic monomer with low cost. Although the process is mature, the solid content of the product is low, and organic solvents and organic amine neutralizers still need to be added during the synthesis process, which will release VOC to pollute the environment and endanger human healt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/46C08G18/44C08G18/42C08G18/32C08G18/67C09D175/14C09J175/14
CPCC08G18/3206C08G18/3212C08G18/4277C08G18/44C08G18/4676C08G18/664C08G18/6644C08G18/672C08G18/675C09D175/14C09J175/14
Inventor 闫福安张珊珊
Owner WUHAN INSTITUTE OF TECHNOLOGY
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