Patent · US Active

Process for preparing 3-aminomethyl-3,5,5-trimethylcyclohexylamine

US8877976B2 · kind B2 · utility

3Cited by

1References

24Claims

0Family size

Assignee

EVONIK DEGUSSA GMBH · DE

Inventors

Christian Lettmann · Coesfeld, DE
Guido Streukens · Wuppertal, DE
Matthias Orschel · Munster, DE
Gerda Grund · Coesfeld, DE

Key dates

Filing date	Nov 17, 2011
Grant date	Nov 4, 2014
Priority date	—
Expiry date	Nov 17, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C2601/14
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The invention relates to an improved process for preparing 3-aminomethyl-3,5,5-trimethylcyclohexylamine, referred to hereinafter as isophoronediamine or IPDA for short, by means of catalytic hydrogenation and/or catalytic reductive amination (also referred to as aminating hydrogenation) of 3-cyano-3,5,5-trimethylcyclohexanone, also called isophoronenitrile or IPN for short hereinafter.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.