Separation process
US7084284B2 · kind B2 · utility
3Cited by
4References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 16, 2004 |
| Grant date | Aug 1, 2006 |
| Priority date | — |
| Expiry date | Jan 2, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2229/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Phosphine and/or phosphine oxide promoters are effectively separated from propylene oxide reaction solvents through use of a membrane effective to retain the phosphine and/or phosphine oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.