Separation of a mixture of polyhydric alcohols
US8177980B2 · kind B2 · utility
3Cited by
19References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2008 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | May 31, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C29/76
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides methods of separating at butanediol compound from a mixture containing polyhydric alcohols and butanediol compounds. The mixture of polyhydric alcohols typically contains propylene glycol and ethylene glycol in addition to the butanediol contaminants. Butanediol contaminants are removed by contacting the mixture with a chromatographic matrix. Either the butanediol compounds or the non-butanediol compounds adsorb to the chromatographic matrix. If desired, the adsorbed compounds may be eluted from the matrix, purified and used in products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.