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Curable composition and cured article obtained therefrom

一种固化性组合物、化合物的技术，应用在其他化学过程、化学仪器和方法等方向，能够解决复原性低等问题

Active Publication Date: 2017-09-26
KANEKA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cured products of the curable compositions using the polymers described in Patent Documents 5 and 6 tend to have low restorability, and a certain amount of time is still required when used as a building sealant with severe joint movement. to improve

Method used

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  • Curable composition and cured article obtained therefrom
  • Curable composition and cured article obtained therefrom
  • Curable composition and cured article obtained therefrom

Examples

Experimental program
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Embodiment

[0202] Hereinafter, the present invention will be described more specifically in conjunction with specific examples, but the present invention is not limited to the following examples.

Synthetic example 1

[0204] With respect to (methoxymethyl)trimethoxysilane manufactured by the method described in Example 2 of JP 2007-513203 A, use 0.02 molar equivalents of zinc chloride as a catalyst, and make it equal to 4 molar equivalents of Acetyl chloride works. The reaction was carried out under heating and reflux for 36 hours, and (methoxymethyl)trichlorosilane was synthesized.

[0205] (Methoxymethyl)trichlorosilane purified by distillation was mixed with 1 molar equivalent of methyldichlorosilane (manufactured by Shin-Etsu Chemical Co., Ltd., trade name: LS-50), and methyltributyl 0.05 molar equivalent of ammonium chloride, and reacted for 3 hours under heating and reflux conditions. Methoxymethyldichlorosilane was obtained at a conversion of about 50%.

[0206]With respect to the (methoxymethyl) dichlorosilane after purification by distillation, feed 2.5 molar equivalents of trimethyl orthoacetate in the reaction vessel, while fully stirring, slowly added (methoxymethyl) ) Dichlo...

Synthetic example 2

[0209] Using a 1 / 1 (weight ratio) mixture of polyoxypropylene diol with a molecular weight of about 3,000 and polyoxypropylene triol with a molecular weight of about 3,000 as the initiator, zinc hexacyanocobaltate glyme complex The catalyst polymerized propylene oxide to obtain a number-average molecular weight of about 19,000 (measured using HLC-8120GPC manufactured by Tosoh Corporation as a liquid delivery system, TSK-GEL H type manufactured by Tosoh Corporation as a chromatographic column, and THF as a solvent). Polyoxypropylene obtained in terms of molecular weight in terms of polystyrene). Next, after adding a methanol solution of NaOMe having an equivalent of 1.2 times the hydroxyl group with respect to the hydroxyl group of the hydroxyl-terminated polyoxypropylene, the methanol was distilled off, and allyl chloride was further added at an equivalent of 1.7 times the hydroxyl group to convert the terminal hydroxyl group to Allyl.

[0210] After mixing and stirring 300 p...

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Abstract

Provided is an environmentally friendly curable composition containing no organic tin, wherein a cured article obtained therefrom exhibits high elongation and high resilience. The curable composition is especially suited to sealing materials. The present invention pertains to a curable composition containing a reactive silicon group-containing organic polymer (A) having high-activity reactive silicon groups at the ends of the molecular chain, and a compound (B) having from 2 to 10 ethyloxy groups in a molecule and having no amino groups in the molecule, the compound (B) being a C1-20 saturated hydrocarbon having one alkoxysilyl group, a C1-20 hydrocarbon having 2 or more alkoxysilyl groups, or a C1-20 polycarboxylic acid ester.

Description

technical field [0001] The present invention relates to organic polymers having silicon groups (hereinafter also referred to as "reactive silicon groups") comprising hydroxyl groups bonded to silicon atoms or hydrolyzable groups capable of crosslinking by forming siloxane bonds, and A curable composition containing the organic polymer. Background technique [0002] It is known that an organic polymer having at least one reactive silicon in its molecule has the property of being crosslinked even at room temperature due to the formation of a siloxane bond accompanied by a hydrolysis reaction of a silyl group caused by moisture or the like, A rubber-like cured product was obtained. As these reactive silicon-based organic polymers, organic polymers whose backbones are polyoxyalkylene polymers and polyisobutylene polymers have been used in industrial production, and have been widely used in sealing materials, adhesives, Applications such as coatings (Patent Documents 1 and 2). ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/10C08G77/46C08G77/48C08K5/06C08K5/29C08K5/544C08L71/02C09K3/10
CPCC08G77/48C09K3/10C08L71/02C08L101/10C08G77/46C09K3/1018C08K5/06C08K5/29
Inventor L.佩特斯S.克拉斯矢野理子佐藤章德
Owner KANEKA CORP
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