Curing composition

A curable composition, a technology of the composition, applied in the direction of adhesive type, building structure, other chemical processes, etc., can solve the problems of insufficient weather resistance and adhesion, and achieve excellent adhesion, less pollution, high The effect of weather resistance

Inactive Publication Date: 2007-02-14
KANEKA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, photocatalyst-coated transparent materials have different activities due to the amount of photocatalyst coated on the surface. When sealing materials composed of curable compositions, it is also clear that weather-resistant adhesion is often insufficient

Method used

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  • Curing composition
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Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0403] 8.39 g (58.5 mmol) of cuprous bromide and 112 mL of acetonitrile were placed in a 2 L flask, and heated and stirred at 70° C. for 30 minutes under a nitrogen stream. 17.6 g (48.8 mmol) of diethyl 2,5-dibromoadipate and 224 mL (1.56 mol) of butyl acrylate were added thereto, followed by heating and stirring at 70° C. for 45 minutes. 0.41 mL (1.95 mmol) of pentamethyldiethylenetriamine (hereinafter referred to as triamine) was added thereto to start the reaction. Heating and stirring were continued at 70° C., and 895 mL (6.24 mol) of butyl acrylate was dripped intermittently over 160 minutes from 80 minutes after the start of the reaction. And during this period, 1.84 mL (8.81 mmol) of triamine was added. 375 minutes after the start of the reaction, 288 mL (1.95 mol) of 1,7-octadiene and 4.1 mL (19.5 mmol) of triamine were added, heating and stirring at 70° C. was continued, and heating was stopped 615 minutes after the start of the reaction. The reaction solution was d...

Synthetic example 2

[0407] In addition to using 3.40g (23.7mmol) cuprous bromide, 47mL acetonitrile, 7.80g (21.7mmol) diethyl 2,5-dibromoadipate, 336mL (2.34mol) butyl acrylate, 59mL (0.63mol) acrylic acid Except for methyl ester, 77mL (0.19mol) of stearyl acrylate, 2.475mL (11.86mmol) of triamine, 141mL of acetonitrile, and 58mL (0.40mol) of 1,7-octadiene, it was prepared in the same manner as in Synthesis Example 1 to obtain chain Alkenyl-terminated vinyl copolymers [3].

[0408] Using the copolymer [3] (160 g), dimethoxymethylhydrosilane (8.46 mL, 68.6 mmol), dimethyl orthoformate (2.50 mL, 22.9 mmol) and a platinum catalyst, a compound having a silyl group at the terminal was obtained. poly(n-butyl acrylate / methyl acrylate / stearyl acrylate) copolymer (Polymer B). The number average molecular weight of the obtained copolymer was 23000, and the molecular weight distribution was 1.3. Depend on 1 According to H-NMR, the average number of silyl groups introduced per one molecule of the copolyme...

Synthetic example 3

[0410] In a pressure-resistant reaction vessel with a stirrer, 800 g of polyoxypropylene with a number-average molecular weight of about 19,000 of the allyl ether group introduced at the molecular end is loaded, and methyldimethoxysilane and chloroplatinic acid catalyst (platinum chloride) are added acid hexahydrate) 1 x 10 -4 [eq / vinyl group] was reacted at 90° C. for 2 hours to obtain a crosslinkable silyl group-containing polyoxyalkylene polymer (polymer C). The terminal functionalization rate was about 77%.

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Abstract

The present invention provides a curable composition capable of giving rubbery cured products having excellent adhesion properties against all-purpose substrates, improved in weather-resistant adhesion properties against photocatalyst-coated transparent substrates, low in modulus and high in elongation and, further, showing high weather resistance without undergoing surface cracking or discoloration even when used outdoors for a long period of time. In addition, the above-mentioned curable composition maintains the rate of curing after storage. The curable composition of the present invention comprises a vinyl polymer (I) the main chain of which is the product of living radical polymerization and which contains at least one crosslinkable silyl group, and an oxygen-curable substance (II).

Description

technical field [0001] The present invention relates to a curable composition comprising an ethylenic polymer (I) having at least one crosslinkable silyl group whose main chain is produced by a living radical polymerization method, and an oxygen-curable substance (II). Background technique [0002] A curable composition containing an ethylene-based polymer with a crosslinkable silyl group is filled between the interior and exterior components of a building or in the joints of the joints, as a building sealant to prevent the intrusion of wind and rain, or as an adhesive Adhesives for bonding various substrates are widely used. The main chain structure is a polyoxyalkylene polymer, and a so-called modified silicone-based sealing material having a crosslinkable silyl group is widely used because of its good handleability and flexibility in a wide temperature range. However, weather resistance is often not sufficient for responding to demands for long-term durability centering ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/02C08F4/40C08L33/08C08L83/04C09J133/04C09J183/04C09J201/02C09K3/10E04F13/08
Inventor 玉井仁矢野理子
Owner KANEKA CORP
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