Process for the polymerization of olefins and catalysts therefor
US4144390A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1971 |
| Grant date | Mar 13, 1979 |
| Priority date | — |
| Expiry date | Oct 1, 1991 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2410/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention relates to the polymerization of .alpha.-olefins and to catalysts and cocatalysts for that purpose wherein the polymerization is carried out in the presence of a catalyst comprising an organometallic compound of a metal of Groups Ia, IIa, IIb, IIIa, and IVa of the Periodic Table and a solid cocatalyst comprising the reaction product of a halogenating agent, an organic oxygenated compound of a divalent metal, and a derivative of a transition metal of Groups IVb, Vb, and VIb of the Periodic Table, the proportions of halogenating agent and organic oxygenated compound being that required to result in a reaction product thereof having an atomic ratio of halogen/divalent metal greater than 1. The invention also comprises the method of making the cocatalysts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.