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:
Jan. 12, 2016
Filed:
Jul. 30, 2010
Abraham D. Schuitman, Midland, MI (US);
Shawn D. Feist, Midland, MI (US);
Barry B. Fish, Lake Jackson, TX (US);
Daniel A. Hickman, Midland, MI (US);
Erich J. Molitor, Midland, MI (US);
Michael L. Tulchinsky, Midland, MI (US);
Abraham D. Schuitman, Midland, MI (US);
Shawn D. Feist, Midland, MI (US);
Barry B. Fish, Lake Jackson, TX (US);
Daniel A. Hickman, Midland, MI (US);
Erich J. Molitor, Midland, MI (US);
Michael L. Tulchinsky, Midland, MI (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
The instant invention provides cycloaliphatic diamines and a method of making the same. The cycloaliphatic diamines according to the instant invention comprise the reaction product of one or more cycloaliphatic cyanoaldehydes selected from the group consisting of 1,3-cyanocyclohexane carboxaldehyde, 1,4-cyanocyclohexane carboxaldehyde, mixtures thereof, and combinations thereof, hydrogen, and ammonia fed into a continuous reductive amination reactor system; wherein the one or more cycloaliphatic cyanoaldehydes, hydrogen, and ammonia are contacted with each other in the presence of one or more heterogeneous metal based catalyst systems at a temperature in the range of from 80° C. to about 160° C. and a pressure in the range of from 700 to 3500 psig; and wherein one or more cycloaliphatic diamines are formed; and wherein said one or more cycloaliphatic diamines are selected from the group consisting of 1,3-bis(aminomethyl)cyclohexane, 1,4-bis(aminomethyl)cyclohexane, combinations thereof, and mixtures thereof.