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Double-component polyurethane waterproofing paint and preparation method thereof

A two-component polyurethane and waterproof coating technology, used in polyurea/polyurethane coatings, coatings, etc., can solve problems such as unfavorable environmental protection and strong toxicity

Inactive Publication Date: 2011-10-12
SHANGHAI ORIENTAL YUHONG WATERPROOF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Coal tar, toluene, xylene and other raw materials in component B are highly toxic and unfavorable to environmental protection

Method used

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  • Double-component polyurethane waterproofing paint and preparation method thereof

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Embodiment Construction

[0027] Below in conjunction with specific embodiment the present invention is described in further detail:

[0028] The present invention is composed of A component and B component, and its mass ratio is 1:3; A component includes: polyoxypropylene ether polyol with a molecular weight of 1500-2500 and a functionality of 2, a molecular weight of 3000-5000, and a functionality of Polyoxypropylene ether polyol of 3, 4,4'-diphenylmethane diisocyanate, 2,4'-diphenylmethane diisocyanate, chlorinated paraffin; its mass ratio is: polyoxypropylene ether 25-40 parts of polyol, 25-40 parts of polyoxypropylene ether polyol, 6-10 parts of 4,4'--diphenylmethane diisocyanate, 6-10 parts of 2,4'--diphenylmethane diisocyanate 13 to 20 parts of chlorinated paraffin; component B includes: tetra-oil, chlorinated paraffin, dibutyl phthalate, MOCA, talcum powder, heavy calcium, kaolin, inorganic pigments, high boiling point non-toxic aromatic hydrocarbon solvent , T-12 catalyst, triethylamine; its ...

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Abstract

The invention relates to double-component polyurethane waterproofing paint and a preparation method thereof. The waterproofing paint consists of a component A and a component B, wherein the mass proportion of component A to component B is 1:3; the component A comprises polyoxypropylene ether polyol with a molecular weight of 1500-2500 and a functionality of 2, polyoxypropylene ether polyol with a molecular weight of 3000-5000 and a functionality of 3, 4,4'-diphenylmethane diisocyanate, 2,4'-diphenylmethane diisocyanate and chlorcosane; and the component B comprises vacuum distillate 4 line oil, the chlorcosane, dibutyl phthalate, methine di-ortho-chloro aniline (MOCA), talcum powder, ground calcium carbonate, kaolin, inorganic pigment, a high-boiling-point non-toxic aromatic hydrocarbon solvent, a T-12 catalyst and triethylamine. The preparation method has the beneficial effects that nontoxic diphenylmethane diisocyanate is used instead of virulent toluene diisocynate; and in addition, toxic raw materials such as coal tar, toluene, dimehtylbenzene and the like are not added any more. Thus, the paint and preparation method are beneficial to environment protection.

Description

technical field [0001] The invention relates to a polyurethane waterproof coating, in particular to the raw material ratio of the polyurethane waterproof coating. Background technique [0002] Polyurethane waterproof coating is a new type of waterproof material, which has unique advantages such as convenient construction, wide application field, strong waterproof ability and long waterproof validity period. [0003] At present, polyurethane waterproof coatings in the world are mainly two-component. The component containing isocyanate is called component A, and the other component is called component B. The main reactive component of component B is curing agent, and it also contains a large amount of pigments and fillers. [0004] The ratio of A component and B component in the prior art is 1: 2.5, wherein A component is made of polyoxypropylene ether polyol (molecular weight 1500~2500, functionality is 2), polyoxypropylene ether polyol (molecular weight 3000-5000, function...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D7/12C09D5/00
Inventor 瞿小华刘操罗超许渊
Owner SHANGHAI ORIENTAL YUHONG WATERPROOF TECH
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