Patent ID: 7265074
Filing Date: 2007-09-04
Classification: C08F

Abstract:
1. A process for the preparation of lower α-alkene polymerization heterogeneous solid catalyst, comprising mixing an organomagnesium precursor derived procatalyst having magnesium chloride supported titanium chloride and an internal electron donor with an organoaluminum compound based cocatalyst; wherein the mole ratio of aluminum in the cocatalyst to titanium in the procatalyst is 10-3000:1, and the procatalyst is obtained by single step reaction of the organomagnesium precursor with titanium tetrahalide or titanium haloalkoxo species of the formula Ti(OR)m Xn, wherein R is selected from the group consisting of methyl, ethyl, normal propyl, isopropyl, normal butyl, and isobutyl, X is selected from the group consisting of chlorine and bromine, and m+n=4 with the condition that when m=1 to 4, n=3 to 0 respectively, with a hydrocarbon or halohydrocarbon solvent and internal electron donor and optionally an acid halide under microwave irradiation of 300 to 1200 W followed by isolating the procatalyst, the mole ratio of the organomagnesium precursor to the titanium tetrachloride or titanium haloalko species being 1:6 to 1:20 and the mole ratios of the electron donor and acid halide to titanium being 0.3 to 1.5 and 0.02 to 0.2, respectively.