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:
Apr. 21, 1998
Filed:
Jan. 13, 1997
Applicant:
Inventors:
Chung-Ling Mao, Emmaus, PA (US);
Francis Joseph Waller, Allentown, PA (US);
Kenneth Merle Kem, Emmaus, PA (US);
Assignee:
Air Products and Chemicals, Inc., Allentown, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
560116 ; 560118 ; 560119 ; 560120 ;
Abstract
Vinyl naphthenate monomer mixtures are prepared by transvinylation of naphthenic acid in the presence of a catalyst of a palladium carboxylate complexed with one or more aryl N-containing ligands and distilling the resulting vinyl naphthenate monomers in the presence of the catalyst at pot temperatures exceeding 80.degree. C. The catalyst is stable and can be re-used over several transvinylation reaction runs.