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. 10, 1989
Filed:
Mar. 28, 1988
Applicant:
Inventors:
Kou-Chang Liu, Wayne, NJ (US);
Paul D Taylor, West Milford, NJ (US);
Assignee:
GAF Corporation, Wayne, NJ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
546243 ; 548543 ; 548552 ; 540604 ;
Abstract
The invention relates to the preparation of N-vinyl lactams having the formula ##STR1## wherein n is an integer having an value of from 1 to 3 in a one-stage, non-aqueous process which comprises reacting a lactam having the formula ##STR2## with acetylene under an acetylene partial pressure of from about 25 to about 125 psig. in the presence of an inert gas diluent and a catalyst having the formula ##STR3## wherein R.sub.1, R.sub.2 and R.sub.3 are all lower alkyl or alyl or one of R.sub.1, R.sub.2 and R.sub.3 can also be hydrogen and M is a metal selected from the group of cesium, potassium, sodium and lithium.