Preparation of low and medium density ethylene polymer in fluid bed reactor
US4011382A · kind A · utility
169Cited by
9References
10Claims
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Key dates
| Filing date | Mar 10, 1975 |
| Grant date | Mar 8, 1977 |
| Priority date | — |
| Expiry date | Mar 10, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L23/0815
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A supported catalyst is used in the low pressure catalytic copolymerization of ethylene with C.sub.3 to C.sub.6 .alpha.-olefins in a fluid bed reactor to produce polymers having a density of less than 0.941 and a melt index of >0.0 to at least about 2.0. The supported catalyst contains about 0.05 to 3.0 weight % of chromium, about 1.5 to 9.0 weight % of titanium and >0.0 to about 2.5 weight % of fluorine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.