Claims
- 1. A method for converting bis(3-cyano-3,5,5-trimethylcyclohexylidene)-azine to 3-(aminomethyl)-3,5,5-trimethylcyclohexyl amine which comprises hydrogenating bis(3-cyano-3,5,5-trimethylcyclohexylidene)-azine with hydrogen in the presence of an organic solvent, ammonia and a catalytic system selected from the group consisting of
- a) a cobalt- or nickel-containing Raney catalyst and a cocatalyst selected from the group consisting of the salts of the elements aluminum, cobalt, lanthanum, yttrium, cerium, Ru, Rh, Pd, Ir and Pt or of carrier-supported noble metals selected from the group consisting of Ru, Rh, Pd, Ir, Pt, and
- b) a carrier-supported ruthenium-, palladium- or platinum catalyst
- at a pressure of 3 to 30 MPa and a temperature of 50.degree. to 150.degree. C. separating the solids from the reaction mixture and distilling the reaction mixture after the solids have been separated off.
- 2. A method according to claim 1 in which the hydrogenation is carried out at a pressure of 3 to 15 MPa and a temperature of 80.degree. to 120.degree. C.
- 3. A method according to claim 1 or claim 2 in which 50 to 500 g ammonia are used per kg IPN-azine.
- 4. A method according to claim 1 or claim 2 in which Raney nickel or Raney cobalt is used as catalyst and in which at least one chloride of the elements Al, Co, Ni, Y, La and Ce is used as cocatalyst.
- 5. A method according to claim 1 or claim 2 in which a C.sub.1 to C.sub.4 alcohol, an ether with up to 6 carbon atoms or an aliphatic or cycloaliphatic hydrocarbon is used as solvent.
- 6. A method according to claim 1 or claim 2 in which bis(3-cyano-3,5,5-trimethylcyclohexylidene)-azine is used in the form of a suspension.
- 7. A method according to claim 1 or claim 2 in which a carrier-supported ruthenium catalyst is used as catalytic system (b) and the carrier is carbon or aluminum oxide in finely distributed form.
Priority Claims (2)
Number |
Date |
Country |
Kind |
4033609 |
Oct 1990 |
DEX |
|
4119577 |
Jun 1991 |
DEX |
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Parent Case Info
This is a division of application Ser. No. 07/785,323, filed Oct. 23, 1991.
US Referenced Citations (4)
Number |
Name |
Date |
Kind |
2101215 |
Graves et al. |
Dec 1937 |
|
2409061 |
Norris |
Oct 1946 |
|
3377374 |
Hale, Jr. et al. |
Apr 1968 |
|
3624122 |
Kamal et al. |
Nov 1971 |
|
Divisions (1)
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Number |
Date |
Country |
Parent |
785323 |
Oct 1991 |
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