Process for preparing 1,3-propanediol
US5545767A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1994 |
| Grant date | Aug 13, 1996 |
| Priority date | — |
| Expiry date | Sep 30, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/58
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
1,3-propanediol is prepared in a process comprising the steps of: PA1 contacting ethylene oxide with carbon monoxide and hydrogen in an essentially non-water-miscible solvent in the presence of an effective amount of a non-phosphine-ligated cobalt catalyst and an effective amount of a lipophilic phenol at a temperature within the range of about 50.degree. to about 100.degree. C. and a pressure within the range of about 500 to about 5000 psig, under reaction conditions effective to produce an intermediate product mixture comprising less than about 15 wt % 3-hydroxypropanal; PA1 adding an aqueous liquid to said intermediate product mixture and extracting into said aqueous liquid at a temperature less than about 100.degree. C. a major portion of the 3-hydroxypropanal so as to provide an aqueous phase comprising 3-hydroxypropanal in greater concentration than the concentration of 3-hydroxypropanal in said intermediate product mixture and an organic phase comprising at least a portion of the cobalt catalyst or a cobalt-containing derivative thereof and at least a portion of the lipophilic phenol; PA1 contacting the aqueous phase comprising 3-hydroxypropanal with hydrogen in the presence…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.