Process for polymerisation of ethylene
US9617355B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Oct 4, 2011 |
| Grant date | Apr 11, 2017 |
| Priority date | — |
| Expiry date | Jan 19, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2410/01
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention is directed to a process for the production of high density polyethylene by polymerisation of ethylene in the presence of a supported chromium oxide based catalyst which is modified with an organic compound comprising oxygen and a nitrogen atom which is selected from the group consisting of saturated heterocyclic organic compounds with a five or six membered ring, amino esters and amino alcohols. Such organic compounds allow manufacturing of HDPE with increases molecular weight distribution and increased molecular weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.