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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 5204303 B1

PDFFull Text
Date of Patent:
Apr. 20, 1993

Filed:

Sep. 16, 1991

Preparation and use of a new ziegler-natta catayst component

Applicant:
Inventors:

Inkeri T Korvenoja, Hglsinki, FI;

Arja-Liisa Kostiainen, Porvoo, FI;

Fero I Iiskola, Porvoo, FI;

Pekka J Sormunen, Porvoo, FI;

Bill B Gustatsson, Porvoo, FI;

Hilkka R Knuuttila, Porvoo, FI;

Ulf Palmqvist, Stenungsund, SE;

Assignee:

Neste Oy, Kulloo, FI;

Attorney:

Armstrong, Westerman, Hattori, McLeland & Naughton

Primary Examiner:

Patrick P Garvin

Assistant Examiner:

Brent M Peebles

Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
502-9 ; 502107 ; 502108 ; 502110 ; 502111 ; 502113 ; 502125 ; 502126 ; 502127 ;
Abstract

The invention relates to a method for the preparation of a supported procatalyst intended for the polymerization of olefines, in which particles are formed of magnesium dihalide and alcohol, the particles are reacted with an organic compound of a metal from the groups I-III, the thus obtained particulate product is activated by means of a titanium and/or vanadium compound and optionally a donor, and optionally a prepolymerization is carried out for the activated particles. A problem of such a method is how to form particles of magnesium dihalogenide and alcohol having a structure advantageous for the polymerization of olefins. The problem has in the present invention been solved so that the particles are formed by spray crystallizing (spray freezing) a mixture of magnesium dihalide and alcohol to complex particles of magnesium dihalide and alcohol. The hydroxyl content of the particles so obtained is much greater than earlier, which results in a much more active procatalyst than the preceding ones.

Find Patent Forward Citations

Korvenoja, Inkeri. (1993). Preparation and use of a new ziegler-natta catayst component (U.S. Patent No. 5204303). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5204303

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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