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:
Apr. 30, 2002
Filed:
May. 11, 1999
Applicant:
Inventors:
Toshiaki Hayashi, Ibaraki, JP;
Nobuyuki Nakajima, Ibaraki, JP;
Assignee:
Sumitomo Chemical Company, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C08F / ; C08G 5/940 ; C08G 5/968 ; C08L 6/304 ;
U.S. Cl.
CPC ...
C07C / ; C08F / ; C08G 5/940 ; C08G 5/968 ; C08L 6/304 ;
Abstract
A cyanate ester-epoxy resin composition that can be cured to obtain a product which has excellent mechanical properties is provided. More particularly, a cyanate ester composition comprising (A) a cyanate ester in which the total content of impurities containing imino carbonates, alkyl cyanamides, partially substituted cyanates and phenols is 5% or less, or a prepolymer thereof and (B) an epoxy resin is provided.