Detail of "7027-11-4"

Reference

Use of Raney cobalt hydrogenation catalysts in the manufacture of isophoronediamine

Use of Raney cobalt hydrogenation catalysts in the manufacture of isophoronediamine. Haas, Thomas; Burmeister, Roland; Arntz, Dietrich; Weber, Karl-Ludwig; Berweiler, Monika (Degussa A.-G., Germany). Ger. DE 19540191 C1 21 Nov 1996, 6 pp. (German). (Germany). CODEN: GWXXAW. CLASS: ICM: C07C211-36. ICS: C07C209-52; C07C209-48. ICA: C07C255-31; B01J025-00; B01J021-06; B01J029-04; B01J031-08. APPLICATION: DE 1995-19540191 30 Oct 1995. DOCUMENT TYPE: Patent CA Section: 45 (Industrial Organic Chemicals, Leather, Fats, and Waxes) Section cross-reference(s): 24, 35, 37 Isophoronediamine (I), useful as a monomer for polyamides, a crosslinking agent for epoxy resins, and an intermediate for manuf. of IPDI, is prepd. from isophorone nitrile (II) with improved yield and space-time yield in two steps by (1) (catalytic) imination with NH3 and (2) hydrogenation in the presence of a C1-3 alc. over a solid bed of Raney Co catalyst at 50-150°/3-10 MPa. The hydrogenation catalyst bed is prepd. by sintering a mixt. of powd. Co and powd. Raney Co alloy to give a material with d. 1.3-5.5 g/cm3, pore vol. ￡0. 2855-13-2 and 7027-11-4 are cas registry numbers of chemicals which are used as reagents here.5 cm3/g, and surface area <1 m2/g, followed by activation with alkali metal hydroxide. Thus, passing 260 mL/h II-MeOH and 140 mL/h NH3 at 100°/6 MPa and liq. hourly space velocity 2 through a tubular reactor contg. 40 mL TiO2 imination catalyst and 160 mL Raney Co hydrogenation catalyst in successive zones gave I in 92.2% yield (based on II), along with 3% 4,6,6-trimethyl-2-azabicyclo[3.2.1]octane and 3.3% 6-imino-3,3,5-trimethyl-7-azabicyclo[3.2.1]octane, which could be recycled. Distn. gave I of 99.8% purity. .