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.:
Date of Patent:
Nov. 01, 1994
Filed:
Sep. 15, 1993
Applicant:
Inventors:
Eero Iiskola, Porvoo, FI;
Rauha Huurinainen, Hamari, FI;
Assignee:
Neste Oy, Kulloo, FI;
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
502111 ; 502127 ; 526125 ; 526351 ;
Abstract
In the invention a procatalyst of a catalyst system of a new type intended for the polymerization of olefins has been prepared comprising a carrier based on a magnesium compound, a titanium compound and a dialkylester of phthalic acid. The most important properties of this kind of a procatalyst are the high stereoselectivity and the high activity. Now it has been possible to increase the activity considerably by using a different kind of dialkylester of phthalic acid having in its alkyl 9 to 20 carbon atoms and the dielectricity constant of which being preferably below 5 measured at 25 C.