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:
Oct. 02, 1979
Filed:
Mar. 31, 1978
Applicant:
Inventor:
Robert Bacskai, Kensington, CA (US);
Assignee:
Chevron Research Company, San Francisco, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528317 ; 528312 ; 528325 ; 528326 ;
Abstract
Processes for copolymerizing 2-pyrrolidone and caprolactam to yield a copolymer which can be formed into useful shaped articles, e.g., filaments. The processes are characterized by the use of both a crown ether and an N-acyl pyrrolidone activator and the use of a limited copolymerization temperature range.