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:
Jul. 11, 1978
Filed:
Nov. 28, 1975
Applicant:
Inventor:
Ralph House, El Sobrante, CA (US);
Assignee:
Chevron Research Company, San Francisco, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528312 ; 2603 / ; 2603 / ; 528326 ;
Abstract
The process for preparing substantially anhydrous solid catalyst for the polymerization of 2-pyrrolidone includes the step of contacting equimolar amounts of an alkali metal hydroxide and 2-pyrrolidone.