Polymerization catalyst composition containing magnesium, titanium, halogen, and carboxylic acid ester
US6200923A · kind A · utility
4Cited by
3References
50Claims
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Key dates
| Filing date | Nov 30, 1998 |
| Grant date | Mar 13, 2001 |
| Priority date | — |
| Expiry date | Nov 30, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A novel soluble composition containing magnesium, titanium, a halogen and a carboxylic acid ester has been invented. The composition has mainly the composition according to Formula (I): EQU (MgX.sup.3.sub.2).sub.x TiX.sup.4.sub.4 (R(COOR').sub.n).sub.y (I) wherein X.sup.3 is a halogen, X.sup.4 is a halogen, R(COOR').sub.n is a carboxylic acid higher alkyl ester containing at least 8.multidot.n carbon atoms, wherein R is an n-valent substituted or unsubstituted C.sub.1 -C.sub.34 hydrocarbon group, R' is a C.sub.1 -C.sub.20 alkyl group, and n is an integer from 1 to 4, x is between 0.5 and 4.0, and y is between 0.8/n and 2.4/n.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.