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Method for producing aqueous dual-component polyurethane waterproofing paint

A two-component polyurethane and waterproof coating technology, applied in polyurea/polyurethane coatings, antifouling/underwater coatings, coatings, etc., can solve problems such as high price, environmental and human production hazards, and achieve stable quality and reduce The effect of production cost and convenient construction

Active Publication Date: 2008-06-18
滨州市良友防水材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These are substances that are extremely harmful to the environment and the human body, and are expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The production method of waterborne two-component polyurethane waterproof coating, described waterproof coating is made up of A component and B component mixed together during use, and the A component in the described waterproof coating adopts the following production steps:

[0034] a. Weigh 80 kg of polyether polyol Diol-2000 and 0.8 kg of tartaric acid, put polyether polyol Diol-2000 and tartaric acid into a vacuum reactor, and react at 100°C under pressure of -0.08MPa under stirring 80 minutes,

[0035] b. After adding 20% ​​of its total weight of isocyanate to the above-mentioned reacted material, it was synthesized and reacted in a vacuum reactor for 120 minutes at a temperature of 60° C. under stirring,

[0036] c, after the temperature of the material after the above synthesis reaction is lowered to 35°C, fill it to obtain component A of the waterproof coating;

[0037] The B component in the described waterproof paint adopts the following production steps:

...

Embodiment 2

[0044] The production method of waterborne two-component polyurethane waterproof coating, described waterproof coating is made up of A component and B component mixed together during use, and the A component in the described waterproof coating adopts the following production steps:

[0045] a. Weigh 120 kg of polyether polyol SU-450M and 1.2 kg of hydrochloric acid, put polyether polyol SU-450M and hydrochloric acid in a vacuum reactor, and react at a temperature of 110°C and a pressure of -0.09MPa under stirring. 120 minutes,

[0046] b. After adding 38% of its total weight of isocyanate to the above-mentioned reacted material, it was synthesized and reacted in a vacuum reactor for 180 minutes at a temperature of 85° C. under stirring,

[0047] c, after the temperature of the material after the above synthesis reaction is lowered to 50°C, fill it to obtain component A of the waterproof coating;

[0048] The B component in the described waterproof paint adopts the following p...

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PUM

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Abstract

The present invention provides a production method of an aqueous bi-component waterproof polyurethane coating and a production method of a waterproof coating used for the construction. Component A is made from the raw materials of polyether polyol, tartaric acid and isocyanate; component B is made from rubber oil, emulsifying agent, water, catalyst, solid filler, calcium hydroxide and other additives. When being used, the components A and B are mixed. The waterproof coating does not contain the materials such as coal tar, toluene and vinyl acetate, does not have pungent odour and toxicity; nearly no three-waste is produced during the production and the construction; the waterproof coating has little material loss and consumption, good environmental protective effect, stable quality, low production cost and convenient construction and can be applied to the waterproof disposal construction of the wet grassroots.

Description

Technical field [0001] The invention provides a production method of waterproof coating for construction. Background technique [0002] For a long time, coal tar polyurethane waterproof coatings represented by 851 and 951 polyurethane waterproof coatings have dominated the polyurethane waterproof coating market. However, coal tar has a complex composition and no fixed hydroxyl value. The performance stability of products using it as raw material is poor. What is more worthy of attention is that coal tar contains a large amount of volatile substances such as anthracene, naphthalene, and phenol, which seriously pollutes the environment and harms the human body. healthy. The national building materials industry management department has adopted mandatory elimination measures for polyurethane waterproof coating products containing coal tar and volatile toxic organic solvents. Although in the past few years, many scientific research units and professional manufacturers have als...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/16C09D5/02
Inventor 李成顺
Owner 滨州市良友防水材料有限责任公司
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