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. 21, 1986
Filed:
Jan. 22, 1982
Applicant:
Inventor:
Nabil Rizkalla, River Vale, NJ (US);
Assignee:
The Halcon SD Group, Inc., Montvale, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
560263 ; 260409 ; 2604106 ; 260413 ; 560105 ; 560106 ; 560265 ; 562493 ; 562496 ; 562606 ; 562607 ; 568484 ;
Abstract
Carboxylic acid anhydrides are reacted with hydrogen to produce alkylidene diesters with high yield and with ratios of alkylidene diesters and co-product carboxylic acid near the theoretical by carrying out the reaction in the presence of a cobalt carbonyl.