Method for producing aliphatic alpha-, omega-diamines

Method for producing aliphatic alpha-, omega-diamines

  • CN 1,222,506 C
  • Filed: 02/23/1999
  • Issued: 10/12/2005
  • Est. Priority Date: 03/06/1998
  • Status: Active Grant
First Claim
Patent Images

1. One kind in the presence of catalyzer, by aliphatic α

  • , the hydrogenation reaction of ω

    -dintrile prepares aliphatic α

    , the method for ω

    -diamines, this method comprise uses the hydrogenation catalyst comprise following component;

    (a) iron or based on compound or its mixture of iron;

    (b) in (a) serve as the promotor of basis 0.001-0.3 weight %, it is based on 2,3,4 or 5 kind of element that is selected from aluminium, silicon, zirconium, titanium and vanadium;

    And(c) in (a) serve as the compound of basis 0-0.3 weight %, it is based on basic metal and/or alkaline-earth metal,Aliphatic series α

    contains the α

    that is less than 2000ppm based on diamines, alpha, omega amino nitriles in ω

    -diamines.

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