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Single-component polyurethane waterproof coating and preparation method thereof

A polyurethane waterproof, one-component technology, applied in the direction of coating, can solve the problems of difficult to guarantee the construction quality of two-component polyurethane waterproof coatings, and the one-component polyurethane cannot be decorated externally, and achieves good adhesion and low temperature flexibility. Effect

Inactive Publication Date: 2011-03-16
SHANGHAI HUILI PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the technical problems to be solved by the present invention is to provide an environmentally friendly, easy-to-use, and externally applicable one-component polyurethane waterproof coating to solve the problem that the construction quality of the existing two-component polyurethane waterproof coating is difficult to guarantee, and the current single-component polyurethane Can't be used for exterior decoration, many deficiencies

Method used

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  • Single-component polyurethane waterproof coating and preparation method thereof
  • Single-component polyurethane waterproof coating and preparation method thereof
  • Single-component polyurethane waterproof coating and preparation method thereof

Examples

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Effect test

Embodiment 1

[0037] Embodiment 1: (by weight)

[0038] 150 parts of polyether polyol (including 4 parts of polyether polyol 2000, 1 part of polyether polyol 3050, 70 parts of chlorinated paraffin, 35 parts of pigment (R-902+rutile titanium dioxide from DuPont in the United States), 310 parts of filler , 35 parts of toluene diisocyanate (TDI), 15 parts of curing agent, 71.2 parts of xylene, and 2.5 parts of catalyst.

[0039] Preparation method: start after heating polyether polyol and chlorinated paraffin to 110-130°C. Slowly add pigments and fillers, and after stirring, carry out vacuum dehydration and dehydration at 110°C to 120°C at -0.088 to -0.09MPa for 2 hours. After cooling down to 75°C, add 2 / 3 xylene, and then add toluene diisocyanate. (TDI) After stirring and reacting for 2 hours at normal pressure and temperature of 80°C to 85°C, add catalyst and curing agent at 100°C to 110°C for 1.5 hours of heat preservation reaction, after cooling down to 70°C to 80°C, add the remaining met...

Embodiment 2

[0045] Embodiment 2: (by weight)

[0046] 160 parts of polyether polyol (including 4 parts of polyether polyol 2000, 1 part of polyether polyol 3050, 65 parts of chlorinated paraffin, 35 parts of pigment (R-902+rutile titanium dioxide from DuPont in the United States), 314.5 parts of filler , 32.5 parts of toluene diisocyanate (TDI), 17.5 parts of curing agent, 61.5 parts of xylene, and 3 parts of catalyst.

[0047]Preparation method: After heating polyether polyol and chlorinated paraffin to 110-130°C, slowly add pigments and fillers, and then carry out vacuum dehydration after stirring, and vacuum-0.088--0.09MPa dehydration at 110°C-120°C After 2 hours, when the temperature is lowered to 75°C, add 2 / 3 xylene, then add toluene diisocyanate (TDI), stir and react for 2 hours at normal pressure and 80°C to 85°C, then add catalyst and curing agent at 100°C- Heat the reaction at 110°C for 1.5h. After cooling down to 70°C-80°C, add the remaining metered xylene and catalyst, stir f...

Embodiment 3

[0052] Embodiment 3 (by weight)

[0053] 175 parts of polyether polyol (including 4 parts of polyether polyol 2000, 1 part of polyether polyol 3050, 60 parts of chlorinated paraffin, 35 parts of pigment (R-902+rutile titanium dioxide from DuPont in the United States), 319 parts of filler , 30 parts of toluene diisocyanate (TDI), 20 parts of curing agent, 56.5 parts of xylene, and 3.5 parts of catalyst.

[0054] Preparation method: After heating polyether polyol and chlorinated paraffin to 110-130°C, slowly add pigments and fillers, and then carry out vacuum dehydration after stirring, and vacuum-0.088--0.09MPa dehydration at 110°C-120°C After 2 hours, when the temperature is lowered to 75°C, add 2 / 3 xylene, then add toluene diisocyanate (TDI), stir and react for 2 hours at normal pressure and 80°C to 85°C, then add catalyst and curing agent at 100°C- Heat the reaction at 110°C for 1.5h. After cooling down to 70°C-80°C, add the remaining metered xylene and catalyst, stir for 2...

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Abstract

The invention discloses a single-component polyurethane waterproof coating which is prepared by polyether polyol, chloroparaffin, pigment, a filler, toluene diisocyanate, a curing agent, xylene and a catalyst. The coating has low VOC (volatile organic compounds), low odor, excellent application property and good weatherability, and is applicable to external application. The invention further discloses a preparation method of the single-component polyurethane waterproof coating.

Description

technical field [0001] The invention relates to a single-component polyurethane waterproof coating and a preparation method thereof, belonging to the field of waterproof coatings, in particular to a single-component polyurethane waterproof coating and a preparation method thereof. Background technique [0002] At present, the waterproof coatings used in the market mainly include polyurethane waterproof coatings, acrylic waterproof coatings and polymer modified emulsified asphalt waterproof coatings. Among them, due to the excellent performance and moderate price of polyurethane waterproof coatings, it occupies a very important position in the field of waterproof coatings. Polyurethane waterproof coatings are divided into two-component polyurethane waterproof coatings and one-component polyurethane waterproof coatings. The two-component polyurethane waterproof coating is composed of two components, A and B. When used, the two components must be weighed and matched in strict ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D7/12C09D5/00
Inventor 曹勇兵沈强王刚
Owner SHANGHAI HUILI PAINT
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