公开(公告)号：US4954304A

公开(公告)日：1990-09-04

申请号：US331144

申请日：1989-03-31

申请人： Toshikazu Ohtake ,  Munekazu Hayashi ,  Satoshi Idemura ,  Kazumi Ohi ,  Yuji Kunitake

发明人： Toshikazu Ohtake ,  Munekazu Hayashi ,  Satoshi Idemura ,  Kazumi Ohi ,  Yuji Kunitake

IPC分类号： B32B15/14 ,  C08F283/10 ,  C08J5/24 ,  C08L63/10 ,  H05K1/03

CPC分类号： C08J5/24 ,  B32B15/14 ,  C08F283/10 ,  C08L63/10 ,  H05K1/0326

摘要： A process for producing a prepreg and a process for producing a laminated sheet therefrom are disclosed, the process for producing a prepreg comprising impregnating a fibrous base with an impregnating resin composition essentially comprising (A.sub.1) a room temperature liquid epoxy resin, (A.sub.2) an epoxy resin curing agent, (B.sub.1) a resin containing a polymerizable unsaturated group, (B.sub.2) a room temperature liquid polymerizable vinyl monomer, and (B.sub.3) a polymerization initiator and containing no solvent other than said polymerizable vinyl monomer (B.sub.2), to obtain an impregnated base, and then removing the polymerizable vinyl monomer present in said impregnated base and converting the resin components to the B-stage. The prepreg is tack-free and soft, and the laminated sheet obtained therefrom has improved metal foil peel strength and interlaminar peel strength.