Curable composition

A composition and polymer technology, applied in the field of vinyl polymers, can solve the problems of high viscosity, increased silanol-containing compounds, a large number of unsaturated silicone monomers, etc.

Inactive Publication Date: 2006-10-18
KANEKA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] However, organovinyl polymers containing at least one active silicon functional group per molecule, as described in Japanese Laid-Open Publication No. 34067/86, are prepared by standard free-radical polymerization using chain transfer agents and

Method used

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  • Curable composition
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Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0616] A 10-liter separable flask equipped with a reflux condenser and stirrer was charged with CuBr (28.0 g, 0.195 mol). After purging with nitrogen, acetonitrile (559 ml) was added, and the mixture was stirred on an oil bath at 70°C for 15 minutes. Then, add butyl acrylate (1.00kg), 2,5-dibromodiethyl adipate (117g, 0.325mol) and pentamethyldiethylenetriamine [hereinafter referred to as triamine] (1.70ml, 1.41g, 8.14mmol), start the reaction. With continuous stirring and heating at 70° C., butyl acrylate (4.00 kg) was continuously added dropwise over 175 minutes. Additional triamine (8.50ml, 7.06g, 40.7mol) was added during the dropwise addition of butyl acrylate. 370 minutes after the reaction started, 1,7-octadiene (1.57L, 1.17kg, 7.10mol) and triamine (20.4ml, 16.9g, 97.7mmol) were added, and the whole mixture was stirred at 70°C for 220 minutes.

[0617] The reaction mixture was diluted with hexane, passed through an activated alumina column, and the volatile substanc...

preparation example 2

[0622]A 2-liter separable flask equipped with a reflux condenser and stirrer was charged with CuBr (22.4 g, 0.156 mol) and purged with nitrogen. Acetonitrile (112ml) was added, and the mixture was stirred on a 70°C oil bath for 30 minutes. Then, butyl acrylate (0.20kg), methyl 2-bromopropionate (86.9g, 0.520mol) and pentamethyldiethylenetriamine (hereinafter referred to as triamine) (0.19ml, 0.18g, 1.04 mmol), start the reaction. Under continuous stirring and heating at 70° C., butyl acrylate (0.80 kg) was continuously added dropwise over 150 minutes. Additional triamine (1.81 ml, 1.71 g, 9.88 mol) was added during the dropwise addition of butyl acrylate. The whole mixture was stirred with heating at 70°C for 230 minutes.

[0623] The reaction mixture was diluted with toluene, passed through an activated alumina column, and the volatile substances were evaporated under reduced pressure to obtain an alkenyl-terminated polymer (polymer [5]). The polymer [5] had a number aver...

Embodiment 1

[0626] 100 parts of polymer [4] obtained in Preparation Example 1, 3 parts of pentaerythritol triacrylate [(CH 2 =CHCOOCH 2 ) 3 CCH 2 OH], 50 parts of polymer [6] as a plasticizer and 100 parts of Calfine100 (Maruo Calcium product) as a filler were stirred and mixed. Then add 2 parts of γ-glycidoxypropyltrimethoxysilane and 1 part of Sn(IV) catalyst (dibutyltin diacetylacetonate), stir, degas the whole mixture, and mold to obtain about 2mm A thick sheet-shaped cured product and a plano-convex cured product with a maximum thickness of about 5 mm on a glass sheet. Curing was carried out by placing each product in a sunny indoor environment (near a window) for 2 days, and then placing it at 50°C for 3 days. After curing, the sheets were tested for residual tack (surface tack) by finger touch and then placed outdoors. Immediately after curing, pass through the glass with a xenon weather-o-meter (xenon weather-o-meter, Suga Testing Instruments product, SX120 type, illuminance ...

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Abstract

The present invention provides a curable composition comprising the following two components: an acrylic polymer or a methacrylic polymer with a number average molecular weight of 500-1,000,000, which has at least one crosslinkable functional group per molecule on average, The crosslinkable functional group is selected from crosslinkable silyl groups, alkenyl groups, hydroxyl groups, polymerizable carbon-carbon double bonds and epoxy groups, and polymer plasticizers with a number average molecular weight of 500-15000.

Description

[0001] This application is a divisional application with the international application number PCT / JP99 / 05557, the Chinese national application number 99814274.3, the application date is October 8, 1999, and the invention title is "curable composition". technical field [0002] The present invention relates to curable compositions, and more particularly to vinyl polymers comprising crosslinking functional groups such as crosslinkable silyl groups. Background technique [0003] Compared with polymers prepared by ionic polymerization or polycondensation reactions, vinyl polymers prepared by free radical polymerization have so far only had very few polymers with functional groups, especially those with such functional groups at the end of the molecular chain. Vinyl polymer. Among these vinyl polymers, (meth)acrylic polymers have certain characteristics that polyether polymers, hydrocarbon polymers, or polyester polymers do not have, for example, high weather resistance and trans...

Claims

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Application Information

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IPC IPC(8): C08L57/06C08F8/42C08L33/00
Inventor 藤田雅幸长谷川伸洋中川佳树
Owner KANEKA CORP
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