LATENT EPOXY HARDENER AND ONE-COMPONENT EPOXY RESIN COMPOSITION CONTAINING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a latent epoxy hardener exerting an excellent adhesion property, water resistance, heat resistance and weather ability and a good sealing property, and a one-component epoxy resin composition. ;SOLUTION: This latent epoxy hardener is obtained through addition polycondensation of from 0.75 to 1.2 mol equivalent of one or two or more alkyl acrylates and/or alkyl methacrylates having an 1-6C alkyl group against 1 mol equivalent of an alicyclic diamine amine. A one-component epoxy resin composition is obtained by allowing an epoxy resin main component containing 1.2 or more epoxy groups per molecule to contain from 5 to 60 wt.% latent epoxy hardener and, if required, to further contain an inorganic filler, a rubber particle and a silane coupling agent. The latent epoxy hardener is cured at a low temperature of from 60 to 120°C and shows a storage stability at 20°C or lower. The one-component epoxy resin composition containing this hardener shows an excellent adhesion against metallic materials, glass materials, ceramic materials, engineering plastic materials, etc., and is useful as an adhesive or sealant for structures.;COPYRIGHT: (C)2000,JPO