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:
Sep. 19, 2000
Filed:
Oct. 29, 1997
Applicant:
Inventors:
Jae-Rock Lee, Daejeon, KR;
Soon-Jin Park, Daejeon, KR;
Sang-Bong Lee, Daejeon, KR;
Kyu-Wan Lee, Daejeon, KR;
Assignee:
Korea Research Institute of Chemical Technology, Daejeon, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528 92 ; 502224 ; 502353 ; 525504 ; 525506 ; 528 94 ;
Abstract
A method for preparing a high-heat-resistant-epoxy-resin composition which comprises adding, as catalytic curing agent, a pyrazinium salt having a benzyl group to difunctional and multifunctional epoxy resin and thermoset resin having a similar structure. The epoxy-resin composition obtained by the present invention is excellent in its impregnating property, processability, impact resistance, drug resistance, electric-insulating property, and adhesiveness.