Polymer-supported catalyst for polymerization and copolymerization of olefins
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 25, 1995
Grant Date -
N/A
app pub date -
Mar 8, 1993
filing date -
Mar 8, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A polymer supported catalyst comprises Ziegler-Natta catalysts immobilized on a magnesium-modified polymer support. The catalyst support is prepared by (1) dissolving a carboxyl group-containing polymer in a solvent and precipitating the polymer in a polar non-solvent, (2) wet-grinding the precipitated polymer, and (3) mixing the ground polymer with an organomagnesium compound or a complex of an organomagnesium compound and an organoaluminum compound to give a magnesium-modified polymer support. Optionally, the resulting magnesium-modified support is treated with a halogen-containing silicon compound. The catalysts may be loaded onto the support by reacting the magnesium-modified support with a transition metal compound to form a catalyst constituent, and then combining the catalyst constituent with an appropriate organo-metallic compound. The supported catalyst is highly active and suitable for the polymerization and copolymerization of olefins without substantial contamination of the resulting products with chlorine or metal ions, as is the case with conventional MgCl.sub.2 -supported catalysts.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully