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:
May. 18, 1976
Filed:
Jul. 03, 1974
Applicant:
Inventors:
Assignee:
Matsushita Electric Works, Ltd., Kadoma, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
260836 ; 156306 ; 260 / ; 260 / ; 428210 ; 428271 ; 428430 ; 428443 ; 428481 ;
Abstract
A two-stage process for producing a three-component graft copolymer of 1,2-polybutadiene, glycidyl methacrylate and a second monomer. By first reacting glycidyl methacrylate on the polymeric substrate and then reacting the second monomer to form a non-crosslinked graft copolymer, high curing rates are obtained. By forming a solvent solution of the grafted product, an epoxy hardener and a radical polymerization initiator, a varnish suitable for forming dielectric prepregs is obtained.