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:
Feb. 25, 1992
Filed:
Dec. 05, 1990
Applicant:
Inventors:
Klaus Huthmacher, Gelnhausen, DE;
Hermann Schmitt, Rodenbach, DE;
Assignee:
Degussa AG, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
558341 ;
Abstract
Hydrogen cyanide is added to isophorone for the preparation of 1,3,3-trimethyl-5-oxo-carbonitrile in the presence of lithium hydroxide in an amount in a range of 0.005 to 5 mole % at 100.degree. to 160.degree. C. The yield is higher and the space-time yield is better than was possible when using other alkaline acting alkali compounds.
Quick Actions:
Huthmacher, Klaus. (1992). Method of preparing 1,3,3-trimethyl-5-oxo-cyclohexane carbonitrile (U.S. Patent No. 5091554). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5091554
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile