Thermosetting adhesive
OwnerMasaaki Takeda, Kohichiro Kawate +4inventors
InventorsMasaaki Takeda, Kohichiro Kawate, Shigeyoshi Ishii, Naoyuki Toriumi, Koji Itoh, Tomihiro Hara
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Abstract
A thermosetting adhesive which produces no foul odor or discharged gas, or form no bubbles under irradiation, and which exhibits a satisfactorily high bonding property, even under low-dose irradiation. The thermosetting adhesive contains an ethylene-glycidyl (meth)acrylate copolymer, whose principal monomer components are an ethylene and a glycidyl (meth)acrylate, and a sulphonium salt-comprising cationic polymerization catalyst.
Claims4
A thermosetting adhesive comprising an ethylene-glycidyl (meth)acrylate copolymer, formed from monomers comprising ethylene and glycidyl (meth)acrylate, and a cationic polymerization catalyst comprising a sulphonium salt expressed by the formula below
- 3
- (wherein —OR1 is present at 2, 4 or 6 position of the phenyl group, R1 represents an acetyl group, a methoxycarbonyl group, an ethoxycarbonyl group, a benzyloxycarbonyl group, a benzoyl group, a phenoxycarbonyl group, a p-methoxybenzyloxycarbonyl group or a 9-fluorenylmethoxycarbonyl group;
- R2 and R3 independently show hydrogen, halogen or an alkyl group having 1 to 4 carbon atoms;
- R4 and R5 independently show an alkyl group having 1 to 4 carbon atoms, and X− shows a non-nucleophilic anion).
Dependencies are inferred from the claim text.