Process and catalyst components for the polymerization and the copolymerization of olefins
US4250284A · kind A · utility
6Cited by
3References
4Claims
0Family size
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Key dates
| Filing date | Feb 24, 1975 |
| Grant date | Feb 10, 1981 |
| Priority date | — |
| Expiry date | Feb 24, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F10/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polymerization and copolymerization is carried out in the presence of an improved transition metal based catalyst. The catalyst is obtained by activating with an organometallic compound, the solid product which results from the reaction of a halogen containing transition metal compound with an alkoxy metal compound of the formula X.sub.m-n M(OR).sub.n wherein M is at least one metal selected from the elements of Groups Ia, IIa, IIb, IIIa and VIIb of the Periodic Table, X is a monovalent inorganic radical, R is a monovalent hydrocarbon radical, m is the valence of M and n is an integer such that 1 .ltoreq. n .ltoreq. m.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.