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Class Information
Number: 564/492
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Amino nitrogen containing (e.g., urea, sulfonamides, nitrosamines, oxyamines, etc., and salts thereof) > Acyclic > Forming amine group directly by reduction > Of cyano > Of plural cyanos > Preparing hexamethylene diamine
Description: Processes wherein hexamethylene diamine is produced.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7453012 |
Continuous process for the hydrogenation of nitriles or nitro compounds to amines |
Nov. 18, 2008 |
| 7381845 |
Nitrile hydrogenation on heterogeneous catalysts in the presence of ionic liquids |
Jun. 3, 2008 |
| 7291754 |
Process for the catalytic hydrogenation of a nitrile |
Nov. 6, 2007 |
| 7214829 |
Method for the production of primary amines by hydrogenating nitriles |
May. 8, 2007 |
| 7208448 |
In an amine or nitrile embedded passivated hydrogenation catalyst |
Apr. 24, 2007 |
| 7196223 |
Higher alcohols for solvents in amine production |
Mar. 27, 2007 |
| 7132562 |
Use of modifiers in a dinitrile hydrogenation process |
Nov. 7, 2006 |
| 7115781 |
Iron-containing oxidic material suitable for use as hydrogenation catalyst precursor |
Oct. 3, 2006 |
| 6790994 |
Methods for hydrogenating nitrile functions into amine functions |
Sep. 14, 2004 |
| 6790996 |
Supported cobalt catalysts for nitrile hydrogenations |
Sep. 14, 2004 |
| 6677486 |
Hydrogenation of nitriles over Raney catalysts |
Jan. 13, 2004 |
| 6649799 |
Method for producing primary and secondary amines by hydrogenation of nitriles and imines |
Nov. 18, 2003 |
| 6600075 |
Process for the preparation of tertiary amines from primary amines and nitriles |
Jul. 29, 2003 |
| 6469211 |
Hydrogenation of nitriles over Raney catalysts |
Oct. 22, 2002 |
| 6399830 |
Selective reductive amination of nitriles |
Jun. 4, 2002 |
| 6384283 |
Method for preparing aminonitrile and diamine |
May. 7, 2002 |
| 6380420 |
Process for making fatty acid nitriles and fatty amines by cross-metathesis of normal alpha olefins |
Apr. 30, 2002 |
| 6376714 |
Environmentally friendly process for the hydrogenation of dinitriles |
Apr. 23, 2002 |
| 6359178 |
Method for producing hexamethylene diamine |
Mar. 19, 2002 |
| 6281388 |
Low pressure amine reactor |
Aug. 28, 2001 |
| 6278023 |
Method for producing aliphatic alpha-, omega-diamines |
Aug. 21, 2001 |
| 6248926 |
Recovery of hexamethylenediamine (HMD) with low polarographically reducible impurities (PRI) from mixtures of HMD, aminocapronitirle and PRI |
Jun. 19, 2001 |
| 6222059 |
Process for the manufacture of aliphatic alpha, omega amino nitriles |
Apr. 24, 2001 |
| 6198002 |
Preparation of secondary and tertiary 2-methyl-1, 5-pentanediamines |
Mar. 6, 2001 |
| 6153784 |
Removal of halides from halide-containing nitrile mixtures |
Nov. 28, 2000 |
| 6139693 |
Method for obtaining hexamethylene diamine from mixtures containing hexamethylene diamine |
Oct. 31, 2000 |
| 6005145 |
Metallic compounds useful as catalysts |
Dec. 21, 1999 |
| 5900511 |
Process for continuous hydrogenation of adiponitrile |
May. 4, 1999 |
| 5894074 |
Preparation of tertiary amines from nitriles and secondary amines |
Apr. 13, 1999 |
| 5874625 |
Process to hydrogenate organic nitriles to primary amines |
Feb. 23, 1999 |
| 5869653 |
Hydrogenation of nitriles to produce amines |
Feb. 9, 1999 |
| 5840989 |
Catalyst for the hydrogenation of nitriles to amines, preparation process thereof and hydrogenation process making use thereof |
Nov. 24, 1998 |
| 5801286 |
Process for the preparation of a catalyst for the hydrogenation of nitriles to amines and use of this catalyst in hydrogenation |
Sep. 1, 1998 |
| 5789621 |
Preparation of amines and aminonitriles |
Aug. 4, 1998 |
| 5763669 |
Process for the preparation of ruthenium complexes and their in situ use as hydrogenation catalysts |
Jun. 9, 1998 |
| 5750788 |
Preparation of amines from compounds having at least 3 cyano groups |
May. 12, 1998 |
| 5726334 |
Process for the preparation of ruthenium hydrogenation catalysts and products thereof |
Mar. 10, 1998 |
| 5717090 |
Simultaneous preparation of caprolactam and hexamethylenediamine |
Feb. 10, 1998 |
| 5689003 |
Ruthenium hydrogenation catalysts |
Nov. 18, 1997 |
| 5629451 |
Reduction of nitrile contaminants by selective hydrogenation |
May. 13, 1997 |
| 5571943 |
Process for preparing primary amines and catalyst system suitable therefor |
Nov. 5, 1996 |
| 5557011 |
Preparation of diamines |
Sep. 17, 1996 |
| 5268509 |
Process for the preparation of an iron catalyst and a process for the preparation of primary amines by the hydrogenation of nitriles using said iron catalyst |
Dec. 7, 1993 |
| 5266731 |
Electrocatalytic hydrogenations of nitriles to amines |
Nov. 30, 1993 |
| 5105015 |
Synthesis of non-cyclic aliphatic polyamines |
Apr. 14, 1992 |
| 5097072 |
Preparation of polyamines |
Mar. 17, 1992 |
| 4906783 |
Preparation of bis(hexamethylene)triamine |
Mar. 6, 1990 |
| 4803304 |
Recovery of bis(hexamethylene)triamine |
Feb. 7, 1989 |
| 4739120 |
Process for the hydrogenation of nitriles to primary amines |
Apr. 19, 1988 |
| 4601859 |
Selective hydrogenation of aliphatic dinitriles to omega-aminonitriles in ammonia with supported, finely dispersed rhodium-containing catalyst |
Jul. 22, 1986 |
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