| 摘要 |
An aminosilane of the formula: <IMG> where R1 is a linear or branched C1-22 alkyf or C3-22 cycloalkyl, which may be substituted with at least one halogen atom; R2 is a bis(linear or branched C1-22 alkyl or C3-22 cycloalkyl)amino, a substituted piperidinyl, a substituted pyrrolidinyl, decahydroquinolinyl, 1,2,3,4-tetrahydroquinolinyl or 1,2,3,4-tetrahydroisoquinol inyl, with the substituent selected from the group consisting of C1-8 alkyl, phenyl, C1-8 l inear or branched alkylsubstituted phenyl and trimethylsilyl, with the proviso that when the substituent is C1-8 alkyl, there must be at least two such substituent groups pr esent and R1 must contain halogen; and R3 is a linear or branched C1-8 alkyl or C3-8 cyclo alkyl. The aminosilane may be reacted with an aluminum-alkyl compound and a solid compo nent comprising a titanium compound having at least one titanium-halogen bond and an electron donor, both supported on an activated anhydrous magnesium dihalide, to form a catalyst for polymerization of olefins.
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