Vapor phase polymerization with temporarily inactive titanium catalyst
US4130699A · kind A · utility
30Cited by
11References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1977 |
| Grant date | Dec 19, 1978 |
| Priority date | — |
| Expiry date | Nov 25, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/901
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Vapor phase polymerization of an olefin which comprises conveying inactive high yield titanium catalyst component to a vapor phase polymerization reactor with a liquid comprising recycled quench liquid, reactivating said inactive high yield titanium catalyst component inside the reactor with a metal alkyl reducing agent and polymerizing olefin under gas phase polymerization conditions with reactivated high yield catalyst to form a resinous polymer of an olefin having a low level of catalyst residues.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.