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. 13, 1993
Filed:
Sep. 06, 1991
Applicant:
Inventor:
Karl Schmitz, Gladbeck, DE;
Assignee:
Huels Aktiengesellschaft, Marl, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
558313 ; 558311 ;
Abstract
The present invention relates to a process for the liquid-phase preparation of nitriles from aliphatic dicarboxylic acids at temperatures of about 200.degree. to 350.degree. C. using ammonia in the presence of a phosphoric acid-based catalyst, wherein an adsorbent for the catalyst is added to the reaction mixture.
Schmitz, Karl. (1993). Process for the liquid-phase preparation of nitriles from aliphatic (U.S. Patent No. 5202455). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5202455
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile