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 date | Nov 28, 1977 |
| Grant date | Mar 27, 1979 |
| Priority date | — |
| Expiry date | Nov 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.