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Diaminoalkane syntheses via selective amination of hydroxyaldehydes

  • US 6,147,261 A
  • Filed: 11/17/1999
  • Issued: 11/14/2000
  • Est. Priority Date: 11/23/1998
  • Status: Expired due to Fees
First Claim
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1. A process for the production of diaminoalkanes which comprises:

  • introducing into a reactor one or more by hydroxyalkanals;

    reacting said hydroxyalkanal in the presence of excess ammonia and hydrogen and in the presence of a catalyst comprising at least one metal selected from nickel or cobalt, or a mixture thereof, optionally on a support or as a bulk-metal catalyst;

    reacting said hydroxyalkanal at a temperature of from 140°

    C. to 180°

    C. at a pressure of at least 500 psi; and

    separating the diaminoalkane product.

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