Process for the production and purification of propylene glycol
US8664448B2 · kind B2 · utility
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4References
3Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 2, 2009 |
| Grant date | Mar 4, 2014 |
| Priority date | — |
| Expiry date | Nov 17, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C29/76
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a process for producing an odorless and colorless industrial grade propylene glycol from glycerol obtained during the manufacturing of biodiesel. The process includes hydrogenating the glycerol to form a hydrogenated product, distilling the hydrogenated product to form a glycol product, and contacting the glycol product with a treatment bed. The propylene glycol may be used in various industrial and consumer applications and products such as personal care products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.