Preparation of very low molecular weight polyethylene in a fluidized bed
US5068489A · kind A · utility
25Cited by
2References
61Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1989 |
| Grant date | Nov 26, 1991 |
| Priority date | — |
| Expiry date | Dec 28, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/905
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Ethylene copolymers having a very low molecular weight are continuously prepared in a fluidized bed in the presence of reduced concentrations of hydrogen, at improved catalyst activity and polymer productivity, by effecting polymerization in the presence of a dialkylzinc compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.