Process for the polymerization or copolymerization of ethylene
US4742132A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1986 |
| Grant date | May 3, 1988 |
| Priority date | — |
| Expiry date | Oct 21, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F10/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for polymerizing or copolymerizing ethylene, characterized in that ethylene or a mixture of ethylene with other .alpha.-olefin is polymerized in the presence of a catalyst comprising: PA0 [I] a solid catalyst component (B) obtained by reacting the following three components: PA1 (a) a reaction product (A) of an organomagnesium compound with a hydropolysiloxane or a silicon compound in which organic groups and hydroxyl groups are bonded to silicon atoms, PA1 (b) a silicon compound of the formula R.sub.l.sup.1 Si(OR.sup.2).sub.m X.sub.4-(l+m), wherein R.sup.1 is a hydrogen atom or a hydrocarbon group having from 1 to 8 carbon atoms, R.sup.2 is a hydrocarbon group having from 1 to 12 carbon atoms, X is a halogen atom, l is 0, 1 or 2, and m is a number of from 0 to 4, and PA1 (c) a titanium compound of the formula Ti(OR.sup.3).sub.n X.sub.4-n, wherein R.sup.3 is a hydrocarbon group having from 1 to 12 carbon atoms, X is a halogen atom, and n is a number of 0 to 4, provided that m and n are not simultaneously 0, and when m is 0, n is 4, and PA0 [II] an organoaluminum compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.