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:
Apr. 05, 2005
Filed:
Dec. 21, 1998
Thomas Garoff, Helsinki, FI;
Timo Leinonen, Tolkkinen, FI;
Sirpa Ala-huikku, Helsinki, FI;
Borealis Technology Oy, Porvoo, FI;
Abstract
The invention relates to a complex comprising a magnesium dihalide and an electron donor. It is a complex of the magnesium dihalide and the electron donor and has the formula (I):MgX·[R(OR')]  (I)wherein MgXis the magnesium dihalide and R(OR′)is the electron donor, X is a halogen, R is an n-valent C-Caliphatic group, an n-valent C-Caraliphatic group or an n-valent C-Cacylic group, R′ is a C-Calkyl group or a C-Caralkyl group, n is a number from 1 to 6 and m is defined as a number 0.5≦m≦2.0. The invention also relates to the preparation process of such a complex, as well as the use thereof for the preparation of olefin polymerization catalyst components.