Process for resin phase separation by plate decantation
US6420517B1 · kind B1 · utility
5Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2001 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | Feb 6, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D17/047
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This invention relates to an economical and efficient process for purifying a reaction mixture obtained in a two-phase interfacial reaction for the preparation of polycarbonate. More particularly, the method of the invention provides for separating the reaction mixture into an organic phase, which includes the desired polycarbonate and undesirable impurities, and an aqueous phase. The organic phase is further purified by using a plate decanter in combination with coalescence and centrifugation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.