Patent Number: 8,722,191

Title: Intermediate layer material and composite laminate

Abstract: There is provided an intermediate layer material including a curing type resin composition and a fiber base material, to be used to form an intermediate layer of a composite laminate, wherein a cured material obtained by curing the intermediate layer material at a temperature of 180.degree. C. has such properties as (i) a planar linear expansion coefficient (.alpha.1) equal to or lower than 20 ppm/.degree. C., in a range equal to or higher than 25.degree. C. and equal to or lower than a glass transition temperature (Tg); and (ii) a Barcol hardness equal to or more than 40 and equal to or less than 65, at 25.degree. C.

Inventors: Kitano; Hideki (Tokyo, JP), Hatano; Haruyuki (Tokyo, JP)

Assignee: Sumitomo Bakelite Co., Ltd.

International Classification: B32B 27/38 (20060101); H05K 1/03 (20060101); B32B 5/14 (20060101); C08G 59/40 (20060101)

Expiration Date: 5/13/12018