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Dual-component polyurethane waterproof paint, B component, B component stabilizing agent and preparation method

A two-component polyurethane and waterproof coating technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of decreased waterproof performance, loss of waterproof effect, non-film formation of waterproof coatings, etc. Realize the effect of industrialized production and low cost

Active Publication Date: 2014-07-09
BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of precipitation will reduce the waterproof performance of the product, and even cause the waterproof coating to fail to form a film in severe cases, thus losing the waterproof effect

Method used

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  • Dual-component polyurethane waterproof paint, B component, B component stabilizing agent and preparation method
  • Dual-component polyurethane waterproof paint, B component, B component stabilizing agent and preparation method
  • Dual-component polyurethane waterproof paint, B component, B component stabilizing agent and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] 1. Two-component polyurethane waterproof coating B-component stabilizer:

[0059] Raw material formula: 30% polyether diol 210A, 18% chlorinated paraffin, 7% toluene diisocyanate 80 / 20, 0.01% catalyst T-12 and 44.99% aromatic solvent naphtha S-1800.

[0060] The preparation method includes the following steps: ①Stir polyether diol 210A and chlorinated paraffin under vacuum dehydration at 75°C, the vacuum pressure is 0.09MPa, heat up to 100°C and continue dehydration for 1.5 hours until the moisture content reaches 100°C. Below 0.03wt%, cooled to 50°C, mixed with toluene diisocyanate 80 / 20, reacted at 80°C for 2 hours to obtain material liquid A; ② Dissolve catalyst T-12 in aromatic hydrocarbon solvent oil S-1800, Add it into the material solution A and mix well, and react at 50°C for 2 hours until the NCO% content is 1.0%.

[0061] 2. Component B of two-component polyurethane waterproof coating:

[0062] Raw material formula: 20% XGA-08 aromatic oil, 23.5% chlorinated...

Embodiment 2

[0067] 1. Two-component polyurethane waterproof coating B-component stabilizer:

[0068] Raw material formula: 35% polyether diol 220, 19.98% dibutyl phthalate, 5% toluene diisocyanate 80 / 20, 0.02% catalyst T-12 and 40% aromatic solvent oil S-1800.

[0069] The preparation method includes the following steps: ①Stir polyether diol 220 and dibutyl phthalate under vacuum dehydration at 85°C, the vacuum pressure is -0.07MPa, heat up to 110°C and continue dehydration 2.5 hours until the water content is below 0.03wt%, cool to 60°C, mix with toluene diisocyanate 80 / 20, and react at 90°C for 4 hours to obtain material liquid A; ② Dissolve catalyst T-12 in aromatic hydrocarbon solvent oil S- 1800, at 60°C, add it into the material liquid A and mix well, and react at 60°C for 3 hours until the NCO% content is 1.05%.

[0070] 2. Component B of two-component polyurethane waterproof coating:

[0071] Raw material formula: 20% XGA-08 aromatic oil, 23% chlorinated paraffin, 50% heavy calc...

Embodiment 3

[0076] 1. Two-component polyurethane waterproof coating B-component stabilizer:

[0077] Raw material formula: 32% polyether diol 210A, 16% chlorinated paraffin, 7% toluene diisocyanate 80 / 20, 0.02% catalyst T-12 and 44.98% aromatic solvent naphtha S-1800.

[0078] The preparation method includes the following steps: ① under stirring, polyether glycol 220 and chlorinated paraffin are vacuum dehydrated at 80°C, the vacuum pressure is -0.07MPa, the temperature is raised to 105°C, and the dehydration is continued for 2 hours, until Moisture content below 0.03wt%, cooled to 60°C, mixed with toluene diisocyanate 80 / 20, reacted at 85°C for 3 hours to obtain material liquid A; ② Dissolve catalyst T-12 in aromatic hydrocarbon solvent oil S-1800, Add to material solution A at ℃ and mix well, react at 55℃ for 2.5 hours until the NCO% content is 1.0%.

[0079] 2. Component B of two-component polyurethane waterproof coating:

[0080] Raw material formula: 20% XGA-08 aromatic oil, 22.5% ...

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Abstract

The invention discloses a dual-component polyurethane waterproof paint, a B component, a B component stabilizing agent and a preparation method. The preparation method of the B component stabilizing agent of the dual-component polyurethane waterproof paint comprises the following steps: 1)mixing 30-35% of polyether glycol, 16-20% of plasticizer and 5.0-7.0% of toluene diisocyanate and reacting to obtain a material liquid A; and 2)mixing the material liquid A, 0.01-0.02% of catalyst and 40-45% of diluent, reacting until the NCO% content is 1.0-1.05% to obtain the product. The B component stabilizing agent can greatly improve the stability of the B component, deposition generation can be effectively reduced, and the expiration date of the paint is prolonged. The B component enables long-term stabilization and storage under high temperature and low temperature. The cost production of the dual-component polyurethane waterproof paint is not obviously increased, and the product comprehensive property is high. The preparation method of the invention has the advantages of stable technology, easy realization of industrial production, low cost and environmental protection.

Description

technical field [0001] The invention relates to a two-component polyurethane waterproof coating, component B and component B stabilizer and a preparation method thereof. Background technique [0002] In traditional waterproofing technology, component B is the curing agent component, which often contains some powder, such as kaolin, heavy calcium, etc. The existence of these powders causes precipitation to occur in actual use. Generally, precipitation can be divided into two types: crystalline precipitation and amorphous precipitation. The internal arrangement of crystalline precipitates is relatively regular, the structure is tight, the particles are large, and they are easy to settle; the particles of amorphous precipitates are small, there is no obvious lattice, the arrangement is messy, the structure is loose, and the volume is large. Experiments have shown that the type of precipitation and particle size depend not only on the nature of the substance, but also on the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D7/12C08G18/76C08G18/48
Inventor 褚卫陈坚栋刘操
Owner BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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