Component and catalysts for the polymerization of olefins
US5221651A · kind A · utility
42Cited by
11References
18Claims
0Family size
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Key dates
| Filing date | Nov 16, 1992 |
| Grant date | Jun 22, 1993 |
| Priority date | — |
| Expiry date | Nov 16, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F10/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Spherical catalyst components for the polymerization of olefins comprising a titanium compound and optionally an electron-donor supported on anhydrous magnesium chloride, characterized by a surface area between 20 and 250 m.sup.2 /g, porosity between 0.25 and 0.5 cc/g, and an X-ray spectrum where the magnesium chloride reflections are present at 2 .nu. of 35.degree. and 14.95.degree., or where the reflection at 35.degree. is substituted by a halo with the maximum intensity between 33.5.degree. and 35.degree. and the reflection of 2 .nu. at 14.95.degree. is absent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.