Optimisation of the ethylene polymerisation process
US8106136B2 · kind B2 · utility
2Cited by
1References
9Claims
0Family size
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Key dates
| Filing date | Nov 5, 2008 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | Nov 5, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2400/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for ethylene slurry polymerisations in a loop reactor in the presence of ethylene monomer, diluent and catalyst and optionally co-monomer and hydrogen, wherein the polymerisation temperature is maintained below the swelling temperature, characterised in that the swelling temperature is calculated as a function of co-monomer concentration and the number average molecular weight of the polyethylene end-product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.