Component of catalyst for olefin polymerization
US4456695A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1982 |
| Grant date | Jun 26, 1984 |
| Priority date | — |
| Expiry date | Aug 20, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F10/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A novel component of a catalyst for polymerization of olefins, which is highly active, exhibits high stereoregularity and also provides polymers of very uniform particle sizes. The catalyst component is a contact product of the following component A and component B: PA0 Component A PA0 A solid product obtained by mixing a solution of the following components (1) and (2) and 0.05 to 5 moles of a titanium tetrachloride precipitant per mol of the component (1) in the copresence of the following component (3), thereby to produce a solid product and then washing the solid product to remove a soluble titanium component; (1) a magnesium compound represented by the formula Mg(OR.sup.1).sub.2-n X.sub.n, wherein R.sup.1 is a hydrocarbyl having 1 to 12 carbon atoms, which is an alkyl, an aryl, an aralkyl or a cycloalkyl, or a halo-derivative thereof, X is a halogen, and n is a number satisfying 0<n.ltoreq.2; (2) a titanium compound represented by the formula Ti(OR.sup.2).sub.4 or a polymer thereof, wherein R.sup.2 is a hydrocarbyl having 1 to 12 carbon atoms, which is an alkyl, an aryl, an aralkyl or a cycloalkyl or a halo-derivative thereof; (3) an electron-donor compound; PA0 Component B PA…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.