| abstract |
The present invention provides a magnesium halide complex having a composition represented by general formula (I):n n n MgX 2 · mROH · nE · pH 2 O (I)n n n In the above formula,n n n X is chloride, bromide, or C 1 -C 14 alkoxy or aryloxy;n n n R is C 1 -C 12 alkyl, C 3 -C 10 cycloalkyl or C 6 -C 10 aryl;n n n E is of formula (II):n n n n n n n n Gem-dihydrocarbyloxy hydrocarbon represented by;n n n R 1 and R 2 are the same or different and are hydrogen or C 1 -C 10 straight or branched alkyl, C 3 -C 10 cycloalkyl, C 6 -C 10 aryl, C 7 -C 10 alkylaryl or arylalkyl Wherein aryl, alkylaryl and arylalkyl are optionally substituted with one or more halogen atoms in the aromatic ring; R 1 and R 2 are optionally bonded to each other to form a ring or fused ring system; R 3 and R 4 have the same meaning as defined for R 1 and R 2 , but not hydrogen;n n n m ranges from 1 to 5;n n n n ranges from 0.005 to 1.0;n n n p ranges from 0 to 0.8.n n n The invention also provides for the polymerization of spherical catalyst components and catalysts prepared from spherical magnesium halide complexes, and α-olefins CH 2 = CHR, wherein R is H, or alkyl or aryl having 1 to 12 carbon atoms, or mixtures thereof. It relates to the use of the catalyst in. |