Molecular weight distribution modification in a tubular reactor
US5013801A · kind A · utility
20Cited by
26References
35Claims
0Family size
Inventors
Key dates
| Filing date | Aug 2, 1988 |
| Grant date | May 7, 1991 |
| Priority date | — |
| Expiry date | Aug 2, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/922
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polymer having a polymodal MWD ethylene copolymer are prepared by conducting the polymerization in a substantially mix free reactor using an essentially transfer agent free reaction mixture, the reaction being carried out in a manner such that the propagation of essentially all copolymer chains is initiated simultaneously. In carrying out the process of this invention, the catalyst components are premixed and aged prior to introduction into the reactor. The process is preferably carried out in a tubular reactor using VCl.sub.4 and aluminum sesquichloride as the catalyst system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.