Preparation of purified concentrated BDO
US5209825A · kind A · utility
8Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1991 |
| Grant date | May 11, 1993 |
| Priority date | — |
| Expiry date | Apr 24, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C29/80
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A distillation process for the preparation of purified concentrated BDO. High boiling impurities, including color formers, precursors of color formers and tar formers are removed from the BDO early in the process and under mild conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.