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:
May. 16, 1989
Filed:
Mar. 21, 1988
Applicant:
Inventors:
Denise B Taylor, Waterford, CT (US);
Barton Milligan, Coplay, PA (US);
Assignee:
Air Products and Chemicals, Inc., Allentown, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
546242 ;
Abstract
This invention relates to an improved catalytic process for producing 2,2,6,6-tetraalkyl-4-oxopiperidines by the reaction of a ketone and ammonia. The improvement resides in using a catalytic amount of a super acid, i.e., a perfluorinated sulfonic acid polymer or perfluorinated alkyl sulfonic acid as the catalyst.