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curable composition

A technology of curable compositions and compounds, applied in the direction of adhesive types, ester copolymer adhesives, etc., can solve problems such as reduction of curing speed

Active Publication Date: 2017-07-21
CEMEDAINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, it has been found that if a trialkoxysilyl group is used as a curable composition containing an organic polymer having a reactive silicon group, a metal hydroxide, an alcohol diluent, and an octyltin compound as proposed in Patent Document 2, Reactive silicon groups may reduce the curing speed after storage of the composition compared to before storage (delayed curing after storage)

Method used

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Examples

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Embodiment

[0103] The following examples are given to illustrate the present invention in more detail, but these examples are illustrative and should of course not be interpreted limitedly.

Synthetic example 1

[0105] In a flask equipped with a stirring device, a nitrogen gas introduction pipe, a thermometer and a reflux cooler, glycerol was used as an initiator, and in the presence of a zinc hexacyanocobaltate-glyme complex catalyst, propylene oxide The hydroxyl value conversion molecular weight obtained by reaction was 14000, and the polyoxypropylene triol whose molecular weight distribution was 1.3. A methanol solution of sodium methoxide is added to the obtained polyoxypropylene triol, and the methanol is distilled off under reduced pressure under heating to convert the terminal hydroxyl group of the polyoxypropylene triol into sodium alkoxide to obtain a terminal alkoxide Polyoxypropylene-based polymers.

[0106] Next, allyl chloride is reacted with the obtained terminal alkanol-salted polyoxypropylene-based polymer, and unreacted allyl chloride is removed and purified to obtain a polyoxypropylene polymer having an allyl group at the terminal. Department of polymers. For the p...

Synthetic example 2

[0109] 70.00 g of methyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.), 30.00 g of 2-ethylhexyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) Industrial Co., Ltd.), 6.90 g of 3-methacryloxypropyltrimethoxysilane (Tokyo Chemical Industry Co., Ltd.) and 0.10 g of zirconocene dichloride as a metal catalyst were introduced into the flask The contents of the flask were heated to 80°C under nitrogen. Next, 6.90 g of mercaptomethyltrimethoxysilane fully substituted with nitrogen was added to the flask at once while stirring. After adding 6.90 g of mercaptomethyltrimethoxysilane, heating and cooling were performed for 4 hours so that the temperature of the content in the stirring flask could be maintained at 80°C. Furthermore, 6.90 g of mercaptomethyltrimethoxysilane fully substituted with nitrogen was additionally added to the flask over 5 minutes while stirring. After additionally adding 6.90 g of the entire amount of mercaptomethyltrimethoxys...

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Abstract

The present invention provides a curable composition, which is a curable composition containing an organic polymer having a reactive silicon group, a metal hydroxide as a flame retardant, and alcohols as a diluent, which does not cause storage post-cure delay. Among them, (A) 100 parts by mass of an organic polymer having a trialkoxysilyl group at the end of the molecular chain, (B) 150 parts by mass to 350 parts by mass of a metal hydroxide having an average particle diameter of 0.1 to 200 μm, ( C) 1-100 mass parts of liquid alkyl alcohols which have an alkoxy group as a substituent, and (D) 10-1500 PPM of octyl tin compound in the whole composition.

Description

technical field [0001] The present invention relates to a curable composition containing an organic polymer having a trialkoxysilyl group at a molecular chain terminal. In particular, it relates to a curable composition in which the curing rate does not decrease after storage of the composition compared with before storage. Background technique [0002] An organic polymer containing a silicon-containing group (hereinafter also referred to as a reactive silicon group) which has a hydroxyl group or a hydrolyzable group bonded to a silicon atom and can be crosslinked by forming a siloxane bond, has The action of moisture such as moisture in the air has the property that crosslinking proceeds at room temperature to form a rubber-like cured product. Therefore, this polymer is used as an adhesive. [0003] The adhesive has elasticity, follows deformation due to a difference in thermal expansion, and is excellent in crack prevention adhesiveness and displacement followability. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L71/02C08L33/12C08K3/22C08K3/26C09J171/02C09J133/12
Inventor 渡边担浅井良介斋藤敦
Owner CEMEDAINE CO LTD