Process for preparing 1,3-propanediol
US5463144A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1994 |
| Grant date | Oct 31, 1995 |
| Priority date | — |
| Expiry date | Sep 30, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/80
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
1,3-propanediol is prepared in a process comprising the steps of: PA0 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 quaternary ammonium salt 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 15 wt % 3-hydroxypropanal; PA0 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 quaternary ammonium salt; PA0 contacting the aqueous phase comprising 3-hydroxypropana…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.