Title:
【発明の名称】ビス(3-シアノ-3,5,5-トリメチル-シクロヘキシリデン)-アジン、該化合物の製法及び3-(アミノメチル)-3,5,5-トリメチルシクロヘキシルアミンの製法
Document Type and Number:
Japanese Patent JP2598848
Kind Code:
B2
Abstract:
The invention relates to bis(3-cyano-3,5,5-trimethylcyclohexylidene)-azine (=IPN-azine), a method of its preparation by reacting 1,3,3-trimethyl-5-oxocyclohexane carbonitrile (=IPN) with a source for hydrazine in a molar ratio of essentially 2 to 1 in the presence of a solvent and to a method for the further processing of the IPN-azine to 3-(aminomethyl)-3,5,5-trimethylcyclohexyl amine (isophorone diamine=IPDA) by means of a hydrogenating azine splitting with hydrogen in the presence of an organic solvent, ammonia and of a catalytic system from the series (a) of a cobalt- or nickel-containing Raney catalyst and of a cocatalyst from the series of salts of the elements aluminum, cobalt, nickel, yttrium, lanthanum, cerium, Ru, Rh, Pd, Ir and Pt or of carrier-supported noble metals from the series Ru, Rh, Pd, Ir, Pt or b) of a carrier-supported Ru-, Pd- or Pt catalyst at a pressure of 3 to 30 MPa and a temperature of 50 DEG to 150 DEG C. The method of the invention concerning IPN-azine makes it possible to obtain IPDA from IPN in high yield and purity and avoids disadvantages of the previously known reductive amination of IPN.
Inventors:
Klaus Futtmacher
Hermann schmidt
Hermann schmidt
Application Number:
JP27363091A
Publication Date:
April 09, 1997
Filing Date:
October 22, 1991
Export Citation:
Assignee:
Degussa Akchengezel Shaft
International Classes:
B01J23/40; B01J25/00; B01J25/02; C07B61/00; C07C209/30; C07C209/42; C07C209/48; C07C211/36; C07C241/00; C07C251/88; C07C253/30; C07C255/61; C07C255/66; (IPC1-7): C07C255/66; C07C209/48; C07C211/36; C07C253/30
Attorney, Agent or Firm:
Toshio Yano (2 outside)