초록 ▼

An epoxy resin composition comprising (I) 5 to 90% by weight of a cyclopentadiene resin, (II) 95 to 10% by weight of an epoxy resin and (III) an effective amount of a curing agent for the epoxy resin, having an acid number of not more than 150, a bromine number of not more than 75 and a softening po

An epoxy resin composition comprising (I) 5 to 90% by weight of a cyclopentadiene resin, (II) 95 to 10% by weight of an epoxy resin and (III) an effective amount of a curing agent for the epoxy resin, having an acid number of not more than 150, a bromine number of not more than 75 and a softening point of not more than 170°C., said cyclopentadiene resin (I) being prepared from a mixture consisting of A. 85 to 35% by weight of a compound having a cyclopentadiene skeleton, B. 15 to 65% by weight of unsaturated nitriles, unsaturated monocarboxylic acids or their esters, alkenyl alkanoates derived from aliphatic monocarboxylic acids and vinyl alcohol or allyl alcohol, abab

대표청구항 ▼

An epoxy resin composition comprising (I) 10 to 70% by weight of a cyclopentadiene resin, (II) 90 to 30% by weight of an epoxy resin (II) and an effective amount of a curing agent for the epoxy resin, said cyclopentadiene resin (I) being prepared by thermal polymerization of the following mixture wi

An epoxy resin composition comprising (I) 10 to 70% by weight of a cyclopentadiene resin, (II) 90 to 30% by weight of an epoxy resin (II) and an effective amount of a curing agent for the epoxy resin, said cyclopentadiene resin (I) being prepared by thermal polymerization of the following mixture without polymerization catalysts, said mixture consisting of A. 85 to 35% by weight of a compound selected from the group consisting of cyclopentadiene, dicyclopentadiene, methylcyclopentadiene, methylcyclopentadiene dimer, cyclopentadiene and methylcyclopentadiene trimer and tetramer, and B. 15 to 65% by weight of at least one compound selected from the group consisting of unsaturated nitriles containing 3 to 6 carbon atoms, unsaturated monocarboxylic acids containing 3 to 4 carbon atoms, unsaturated monocarboxylic acid containing 3 to 4 carbon atoms and glycides or aliphatic alcohols containing 1 to 8 carbon atoms, alkenyl alkanoates derived from aliphatic monocarboxylic acids containing 1 to 4 carbon atoms and vinyl alcohol or allyl alcohol, ab4 to 5 carbon atoms, mono- and di-esters derived from ab4 to 5 carbon atoms an aliphatic alcohols containing 1 to 8 carbon atoms, and unsaturated aldehydes containing 3 to 6 carbon atoms, C. 0 to 30% by weight of ab4 to 5 carbon atoms, and D. 0 to 30% by weIght of unsaturated hydrocarbon compounds containing 3 to 10 carbon atoms, and having an acid number of not more than 150, a bromine number of not more than 75 and a softening point of not more than 170°C.