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US 4,629,755 AGranted
Radical polymerizing composition and anaerobic liquid gasket composed thereof
AssigneeOkura Kogyo Kabushiki Kaisha
InventorsKunio Kanaoka, Takanori Okamoto, Hideaki Matsuda
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Abstract
There are provided a radical polymerizing composition giving a cured resin having excellent elasticity which comprises a mixture of two or more kinds of monomethacrylic acid esters having specific structure at specific mixing ratio and organic peroxide, and more particularly an anaerobic liquid gasket having excellent sealing properties, pressure resistance and good storage stability which comprises these polymerizing composition, filler, anaerobic curing accelerator and stabilizer.
Claims14
A radical polymerizing composition comprising
- (a) 100 parts by weight of a monomethacrylic acid ester mixture composed of 20 to 95% by weight of the methacrylic acid ester(s) represented by following general formula (1) and/or general formula (2) and 80 to 5% by weight of the methacrylic acid ester(s) composed of general formula (3) and/or general formula (4) ##STR2## wherein, R represents and alkyl group having 6 to 13 carbon atoms;
- R' represents an alkylene group having 2 to 4 carbon atoms or a halogenated alkylene group;
- R" represents an alkyl group having 1 to 4 carbon atoms;
- R"' represents a phenyl group, a benzyl group, a phenoxyethyl group, a cyclohexyl group, or a tetrahydrofurfuryl group;
- and n represents an integer of 1 to 23 and
- (b) 0.01 to 10 parts by weight of an organic peroxide.
3 more elements
An anaerobic liquid gasket comprising
- (a) 100 parts by weight of a monomethacrylic acid ester mixture composed of (a) 20 to 95% by weight of the methacrylic acid ester(s) represented by following general formula (1) and/or general formula (2) and 80 to 5% by weight of the methacrylic acid ester(s) represented by general formula (3) and/or general formula (4) ##STR3## wherein, R represents an alkyl group having 6 to 13 carbon atoms;
- R' represents an alkylene group having 2 to 4 carbon atoms or a halogenated alkylene group;
- R" represents an alkyl group having 1 to 4 carbon atoms;
- R"' represents a phenyl group, a benzyl group, a phenoxethyl group, a cyclohexyl group, or a tetrahydrofurfuryl group
- (b) 0.01 to 10 parts by weight of an organic peroxide,
- (c) 10 to 50 parts by weight of a filler,
- (d) 0.2 to 10 parts by weight of an anaerobic curing accelerator, and
- (e) 0.002 to 1 part by weight of a stabilizer.
5 more elements
Dependencies are inferred from the claim text.