Patent · US Expired

Catalyst pellet stabilization in the preparation of polyamines from polynitriles

US4146560A · kind A · utility

7Cited by
5References
18Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 28, 1977
Grant dateMar 27, 1979
Priority date
Expiry dateNov 28, 1997

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07C209/48
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

Abstract

Covers a process for preparing polyamines from the corresponding polynitriles via a pelleted cobalt-copper-chromium hydrogenation catalyst which comprises contacting a polynitrile with hydrogen in presence of said catalyst and a stabilizing agent comprising a polyamine or a hydroxyl-amine whereby catalyst pellet disintegration is inhibited by the presence of said stabilizing agent.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.