Silicone oil recovery
US4857150A · kind A · utility
17Cited by
14References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1988 |
| Grant date | Aug 15, 1989 |
| Priority date | — |
| Expiry date | Jun 22, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/909
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for the recovery of silicone oil and chlorobenzenes from a mixture containing silicone oil, chlorobenzenes, and polychlorinated biphenyls comprising: PA1 (a) introducing the mixture into a distillation zone at a temperature and a pressure which will cause the chlorobenzenes to flash overhead and the mixture of silicone oil and polychlorinated biphenyls to pass to the bottom of the zone; and PA1 (b) removing the bottoms from step (a), cooling same, and passing the bottoms through at least one bed of activated carbon, which is an adsorbent for polychlorinated biphenyls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.