Patent ID: 9546306
Date: 2017-01-17
CPC Classifications: C08F,C08K,C09J,G11B

Claim:
1. A cationically curable resin composition for assembling hard disk devices, consisting of: a resin having a cationically polymerizable functional group (a component A) and a cationic polymerization initiator (a component B), the component B being at least one selected from the group consisting of the following formulae: the component A is a mixture of an epoxy group-containing resin having an epoxy equivalent of not less than 150 and an oxetanyl group-containing resin, the epoxy group-containing resin having an epoxy equivalent of not less than 150 is at least one resin selected from the group consisting of a bisphenol A type epoxy resin, a hydrogenated bisphenol A epoxy resin, a bisphenol F epoxy resin, a cresol novolak epoxy resin and an adduct of 2,2-bis(hydroxymethyl)-1-butanol with 1,2-epoxy-4-(2-oxiranyl)cyclohexane, the oxetanyl group-containing resin is at least one resin selected from the group consisting of 3-ethyl-3-hydroxymethyloxetane, 2-ethylhexyloxelane, xylylenebisoxetane, 3-ethyl-3{[(3-ethyloxetan-3-yl)methoxy]methyl}oxetane, oxetanylsilsesquioxetane, phenol novolak oxetane and 3-ethyl-3-phenoxymethyloxetane.