Method for producing an improved catalyst for homo-and co-polymerization of olefin
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 5, 2004
Grant Date -
N/A
app pub date -
Sep 3, 2002
filing date -
Oct 23, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention relates to a solid complex titanium catalyst for homo-polymerization and co-polymerization of .alpha.-olefin, obtained by (i) producing a solution of a magnesium compound by dissolving a magnesium compound and a compound of IIIA Group of the Periodic Table in a solvent mixed with cyclic ether, one or more types of alcohol, a phosphorous compound, and an organosilane, (ii) precipitating the solid particles by reacting said magnesium solution with a compound of a transition metal, a silicon compound, or the mixture thereof, and (iii) reacting said precipitated solid particles with a titanium compound and an electron donor. The catalyst of the present invention is of large particle size, narrow particle distribution, and high catalytic activity, while the polymers obtained with the use of this catalyst are of excellent stereoregularity.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
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