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. 07, 1978
Filed:
Sep. 14, 1976
Applicant:
Inventors:
Hans Feichtinger, Dinslaken, DT;
Heinz Aschmann, Oberhausen, DT;
Hans-Walter Birnkraut, Oberhausen, DT;
Ludwig Brinkmann, Frankfurt am Main-Schwanheim, DT;
Werner Pluta, Andernach, DT;
Assignee:
Ruhrchemie Aktiengesellschaft, Oberhausen, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2605 / ; 252458 ; 2605 / ; 2605 / ;
Abstract
A method for preparing neopentane diamine is disclosed comprising reacting neopentane glycol with ammonia in the presence of hydrogen and a nickel containing catalyst at elevated temperatures and pressures. Neopentane diamine is useful as an intermediate in the preparation of polyurethanes.