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:
Mar. 31, 1987
Filed:
May. 28, 1982
Applicant:
Inventors:
James A Kaufman, Wellesley, MA (US);
Suzanne V McKinley, Midland, MI (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
2604106 ; 260398 ; 260546 ; 260549 ; 560224 ; 560240 ; 560263 ; 560264 ; 568397 ;
Abstract
The invention disclosed herein is a process for preparing aliphatic anhydrides comprising contacting a divinyl ether with carboxylic acid in the presence of a catalytic amount of a strong acid. The invention is further a process for preparing alkylidene dicarboxylates, which are intermediates in the above preparation of aliphatic anhydride.
Kaufman, James. (1987). Preparation of aliphatic anhydrides and alkylidene dicarboxylates from (U.S. Patent No. 4654174). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4654174
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile