Process for producing propylene glycol
US8053608B2 · kind B2 · utility
14Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2008 |
| Grant date | Nov 8, 2011 |
| Priority date | — |
| Expiry date | Oct 28, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C29/60
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
It is an object of the present invention to provide a process for producing propylene glycol from glycerol as a raw material without the necessity for a step of gasifying glycerol. The process for producing propylene glycol of the present invention comprises a step of subjecting glycerol to catalytic hydrogenation in the presence of a catalyst A containing zinc oxide, silica, and at least one of copper and copper oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.