Process for producing polyethylene having a broad molecular weight distribution
US5639834A · kind A · utility
39Cited by
1References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 26, 1994 |
| Grant date | Jun 17, 1997 |
| Priority date | — |
| Expiry date | Oct 26, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
In a process for the copolymerization of ethylene in two liquid full loop reactors in series wherein the average molecular weight is regulated, the introduction of the comonomer is made in the first reactor, and high and low average molecular weight polymers are produced respectively in the first and second reactor, the improvement which consists in using one or more settling legs of the first reactor for the transfer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.