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Waterproof coating material and building roof having coating film formed therefrom

A waterproof coating and building technology, applied in the field of building roofs, can solve the problems of long-term adhesion durability and water resistance reduction, long time, etc., and achieve the effects of low VOC content, high stain resistance, and low water absorption

Active Publication Date: 2014-10-15
KANEKA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, they are known to have a problem that it takes a long time to form a coating film under low temperature or high humidity
[0008] However, the coating film formed by such paints tends to absorb water when it rains, so the paints have problems in that long-term adhesion durability and water resistance decrease

Method used

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  • Waterproof coating material and building roof having coating film formed therefrom
  • Waterproof coating material and building roof having coating film formed therefrom
  • Waterproof coating material and building roof having coating film formed therefrom

Examples

Experimental program
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specific example

[0109] Specific examples thereof include: straight-chain saturated fatty acids such as acetic acid, propionic acid, butyric acid, pentanoic acid, caproic acid, heptanoic acid, octanoic acid, 2-ethylhexanoic acid, nonanoic acid, capric acid, undecanoic acid, dodecanoic acid Acid, tridecanoic acid, tetradecanoic acid, pentadecanoic acid, hexadecanoic acid, heptadecanoic acid, octadecanoic acid, nonadecanoic acid, eicosanoic acid, behenic acid, eicosanoic acid Tetradecanoic, Hexacosanoic, Nonacosanoic, Triacosanoic, and Tricosanoic acids; monoethylenically unsaturated fatty acids such as undecylenic acid, 4-dodecenoic acid, crude duric acid , 5-tetradecenoic acid, 9-tetradecenoic acid, 2-hexadecenoic acid, 6-hexadecenoic acid, 7-hexadecenoic acid, palmitoleic acid, 6-octadecene oleic acid, oleic acid, elaidic acid, asclepic acid, vaccenic acid, codoleic acid, gondolic acid, cetenoic acid, erucic acid, brazilenic acid, squaloleic acid, ximenenoic acid, eicosan- 21-enoic acid, acr...

Embodiment

[0195] The present invention will be described in more detail below with reference to, but not limited to, Examples and Comparative Examples.

[0196] The synthesis method of component (A) is explained below.

Synthetic example 1

[0198] Propylene oxide is polymerized in the presence of polyoxypropylene diol having a molecular weight of about 2,000 and a zinc hexacyanocobaltate ethylene glycol dimethyl ether complex catalyst as an initiator to provide a polymer having a number average molecular weight of about 14,600 ( Polypropylene oxide determined using a solvent delivery system HLC-8120GPC (TOSOH CORP.), a TSK-GEL H-type column (TOSOH CORP.) and THF as a solvent (polystyrene equivalent molecular weight). Then, a methanol solution of NaOMe was added to the hydroxyl-terminated polypropylene oxide in an amount of 1.2 equivalents relative to the hydroxyl groups of the polypropylene oxide, and the methanol was distilled off. Allyl chloride is then added thereto to convert terminal hydroxyl groups to allyl groups. Next, unreacted allyl chloride was removed under reduced pressure. The obtained unpurified allyl-terminated polypropylene oxide (100 parts by weight) was stirred and mixed with n-hexane (300 par...

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Abstract

Provided are a waterproof coating material and a roof having a coating film formed therefrom which have low VOC content, good film curability under low-temperature / high- humidity conditions, high stain resistance, and low water absorbency. The coating material comprises: (A) 100 parts by weight of a polyoxyalkylene polymer (al) and / or a vinylic polymer (a2), the polymers each containing a reactive silyl group of formula (1): -SiR1 3-aXa (1) wherein each R1 independently represents a C1-C20 alkyl, C6-C20 aryl, or C7-C20 aralkyl group, or a triorganosiloxy group of (R')3SiO- where R's each independently represent a C1-C20 substituted or unsubstituted hydrocarbon group; each X independently represents a hydroxy or hydrolyzable group; and a represents 1, 2 or 3; and (B) 0.1-20 parts by weight of at least one compound including a compound (b3) obtained by partial condensation of silyl groups of an aminosilane alone or of a combination of an aminosilane and another alkoxysilane compound.

Description

technical field [0001] The present invention relates to waterproof coatings comprising one or more organic polymers containing silicon-containing groups containing hydrolyzable groups or hydroxyl groups bonded to silicon atoms and capable of forming siloxane Alkane bonds to crosslink (hereinafter also referred to as "reactive silyl groups"), and also relate to building roofs having coating films formed therefrom. Background technique [0002] It is known that organic polymers containing at least one reactive silyl group in each molecule have properties that, even at room temperature due to factors such as moisture, siloxanes by hydrolysis or other reactions involving reactive silyl groups Bond formation crosslinks the polymer, thereby providing a rubbery cured product. [0003] Patent Document 1 and Patent Document 2 describe that among such reactive silyl group-containing polymers, organic polymers having a main chain structure including polyoxyalkylene polymers or vinyl-b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D201/10C09D7/12C09D171/02
CPCC09D7/12C09D171/02C09D201/10C08G65/336C08L71/02C08L33/06
Inventor 安藤克浩冈本敏彦
Owner KANEKA CORP
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