Water-based polyurethane

A technology of water-based polyurethane and water-based curing agent, applied in the direction of polyurea/polyurethane coating, polyurea/polyurethane adhesive, adhesive type, etc., can solve the problem of polyurethane insoluble in water and environmental protection, and achieve excellent chemical resistance properties, low viscosity, and good film adhesion

Inactive Publication Date: 2010-02-03
SHENZHEN OCEANPOWER NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved in the present invention is to solve the above technical deficiencies, overcome the shortcomings of traditional solvent-based polyurethanes such as insoluble in water and poor environmental protection, and provide a water-based polyurethane

Method used

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  • Water-based polyurethane

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with specific embodiment:

[0017] (1) Preparation of Polyol Resin Emulsion:

[0018] 40-80 parts by weight of SOVERMOL polyol resin, non-ionic emulsifier accounting for 2-10% by weight of polyol resin, and 30-52 parts by weight of water are weighed.

[0019] Its preparation method comprises the following steps:

[0020] A. Put SOVERMOL polyol resin into a 500ml beaker, heat to 20-80°C, add nonionic emulsifier A-3065;

[0021] B. Put the dispersing head of the emulsifying machine in a beaker, turn on the emulsifying machine, preheat the dispersing head, and disperse the mixed solution of polyol resin and emulsifier obtained in step A evenly;

[0022] C. Add water at 30-80°C to the mixed solution obtained in step B, stop adding water when the mixed solution reaches the phase inversion critical point, stir for 3-10 minutes until the mixed solution is uniform, add the remaining water, and continue stirr...

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Abstract

The invention discloses a water-based polyurethane, which comprises the following components in portion by mass: 20 to 80 portions of polyol resin emulsion, 1 to 5 portions of zeolite powder, 0.2 to 0.5 portion of wetting dispersant, 0.4 to 0.8 portion of epoxy resin curing agent, 0.1 to 1 portion of organic drier, 20 to 80 portions of water-based curing agent, and water which is added based on the viscosity of the water-based polyurethane. The water-based polyurethane overcomes the defects that the conventional solvent-based polyurethane is water-insoluble, has poor environment protection property and the like, has the advantages of low viscosity, sprayability, convenient construction, no dangers of flammability and explosiveness, washability with water, good paint film adhesive force, excellent chemical resistance, high-degree abrasive resistance and tenacity and the like, can be used for preparing a varnish applied to water-based wood lacquers, can be used as a colored paint by adding color fillers, can be mixed with cement, is quickly cured for repair work, and can also be applied in the fields of floor coatings, binding agents, mold injection molding, electric appliance packaging, chemical grouting and the like.

Description

technical field [0001] The invention relates to a waterborne polyurethane. Background technique [0002] Polyurethane is widely used in various industries: such as adhesives, foaming, elastomers, casting, injection molding, coatings and varnish, etc. Petroleum resin is an indispensable infrastructure material for transportation, construction and other industries, and its application is increasingly widespread. However, due to It is a water-insoluble oily polymer and cannot be mixed with hydrophilic materials. In recent years, with the application and research progress of polyurethane, people's awareness of environmental protection has been continuously strengthened, and the relevant labor protection, safety, As laws and regulations such as fire protection and environmental protection are becoming more and more perfect, a water-based polyurethane that can replace solvent-based polyurethane in the field of coatings and adhesives has become a demand. Contents of the invention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/40C08K3/34C09D175/04C09D5/02C09J175/04
Inventor 成长青李伟新赵欣平何唯平
Owner SHENZHEN OCEANPOWER NEW MATERIALS TECH
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