Process for the polymerization or copolymerization of ethylene
US4464518A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1982 |
| Grant date | Aug 7, 1984 |
| Priority date | — |
| Expiry date | Jun 4, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/909
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polymerization of ethylene or copolymerization of ethylene with other .alpha.-olefin is carried out in the presence of a specific catalyst system. The catalyst system is obtained by preparing a reaction product (A) of an organic aluminum compound (I) represented by the formula AlR.sub.n.sup.1 X.sub.3-n where R.sup.1 is hydrogen or an alkyl group having from 1 to 10 carbon atoms, X is Cl or Br and n is a number satisfying 0<n<3, with a mixture of a straight chain aliphatic alcohol and a branched chain aliphatic alcohol or a cyclic alcohol, separately preparing a reaction product (B) of an organic magnesium compound with a hydropolysiloxane or a silicone compound in which organic groups and hydroxyl groups are bonded to silicon atoms, reacting the reaction product (A) with the reaction product (B) to produce a reaction product (C), reacting the reaction product (C) with a halogen-containing titanium or vanadium compound to obtain a solid product (D) and mixing the solid product (D) with an organic aluminum compound (II).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.