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:
Dec. 03, 1991
Filed:
Dec. 18, 1989
Applicant:
Inventors:
Shigeyoshi Hara, Iwakuni, JP;
Umewaka Nakatani, Iwakuni, JP;
Assignee:
Hercules Incorporated, Wilmington, DE (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B29C / ;
U.S. Cl.
CPC ...
427400 ; 264232 ; 264340 ; 5253321 ; 5253323 ; 5253595 ; 5253596 ; 525387 ;
Abstract
Flame retardance of polymers prepared by metathesis polymerization of cycloolefins is improved by treatment of molded articles with a halogenated hydrocarbon capable of entering into radical chain transfer reactions with the carbon-carbon unsaturation present in the polymer recurring unit.