公开(公告)号：US11647583B2

公开(公告)日：2023-05-09

申请号：US16095120

申请日：2017-04-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shimpei Obata ,  Ryuuji Takahashi ,  Yasunori Hoshino ,  Shigetoshi Fujita

IPC: H05K1/03 ,  B32B15/08 ,  B32B5/28 ,  C08J5/10 ,  C08J5/24 ,  H01L23/498 ,  H05K1/02

CPC classification number: H05K1/0373 ,  B32B5/28 ,  B32B15/08 ,  C08J5/10 ,  C08J5/244 ,  H01L23/49894 ,  H05K1/0271 ,  H05K1/03 ,  H05K1/0366 ,  B32B2262/101 ,  B32B2457/08 ,  C08J2361/06 ,  C08J2361/08 ,  C08J2363/00 ,  C08J2379/08 ,  C08J2425/12 ,  C08J2433/00 ,  C08J2433/04 ,  C08J2433/12 ,  C08J2433/20 ,  C08J2461/06 ,  C08J2461/08 ,  C08J2463/00 ,  C08J2475/00 ,  C08J2479/08 ,  C08J2483/04 ,  H05K2201/0218 ,  H05K2201/0227

Abstract: A prepreg contains a base material containing a reinforcing fiber and a semi-cured product of a resin composition impregnated into the base material containing a reinforcing fiber. The prepreg after cured has a glass transition temperature (Tg) which is higher than or equal to 150° C. and lower than or equal to 220° C. The resin composition contains (A) a thermosetting resin and (B) at least one compound selected from a group consisting of core shell rubber and a polymer component having a weight average molecular weight of 100000 or more. An amount of the (B) component is higher than or equal to 30 parts by mass and lower than or equal to 100 parts by mass with respect to 100 parts by mass of the (A) component.