Patent ID: 9681541
Date: 2017-06-13
CPC Classifications: B32B,C08G,C08J,C08K,C08L,H05K

Claim:
1. A resin composition comprising: an epoxy resin; and a hardener, wherein the hardener contains a styrene-maleic anhydride copolymer and an anhydride having only one anhydride group in a molecule, an acid value of the styrene-maleic anhydride copolymer is in a range from 300 to 550, inclusive, a ratio of an anhydride group equivalent number of the anhydride with respect to an epoxy group equivalent number of the epoxy resin is in a range from 0.05 to 0.5, inclusive, and a ratio of a total number of an anhydride group equivalent number of the anhydride and an anhydride group equivalent number of the styrene-maleic anhydride copolymer with respect to the epoxy group equivalent number is in a range from 0.5 to 1.2, inclusive.