The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 08, 1994
Filed:
Aug. 15, 1991
Applicant:
Inventors:
Assignee:
Toho Rayon Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; B32B / ;
U.S. Cl.
CPC ...
428272 ; 428273 ; 428290 ; 528 87 ; 528 93 ;
Abstract
A low fuming phenolic resin prepreg comprising a fibrous base impregnated with 20 to 60% by weight of a resin composition comprising (a) 100 parts by weight of a resol phenolic resin, (b) from 1.5 to 15 parts by weight of polyacrylamide, (c) from 1.5 to 25 parts by weight of an epoxy resin, and (d) from 1.5 to 15 parts by weight of an inorganic filler, and the method for preparing the prepreg by impregnating a solution of (a), (b) and (c) having dispersed therein the filler into a fibrous base. The method for the prepreg comprising impregnating the fibrous base with the resin composition. The phenolic resin prepreg has low fuming properties as well as excellent self-adhesion.