Olefin polymerization catalyst
AssigneesToho Catalyst Co., Ltd., Ube Industries, Ltd.
InventorsSatoru Chosa, Kunihiko Tashino, Motozo Yoshikiyo, Hiroshi Sato
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Abstract
An olefin polymerization catalyst comprising: (A1) a solid catalyst component prepared by contacting (a1) a dialkoxymagnesium, (b1) a tetravalent titanium halide, (c1) an electron compound, and (d1) a polysiloxane, (B) an organoaluminum compound of the formula R1pAlQ3-p, and (C) an aminosilane compound of the formula (R2R3N)Si (OR4)3 has a high activity to hydrogen as compared with conventional catalysts and maintains the capability of producing polymers with a high stereoregularity at a high yield.
Claims10
An olefin polymerization catalyst comprising the following components (A1), (B), and (C):
- (A1) a solid catalyst component prepared by contacting (a1) a dialkoxymagnesium, (b1) a tetravalent titanium halide, (c1) an electron donor compound, and (d1) a polysiloxane,
- (B) an organoaluminum compound of the following formula (1),
- R1pAlQ3-p (1)
- wherein R1 represents an alkyl group having 1-4 carbon atoms, Q represents a hydrogen atom or a halogen atom, and p represents a real number satisfying the formula 0<p≦3, and
- (C) an aminosilane compound of the following formula (2),
- (R2R3N) Si (OR4)3 (2)
- wherein R2 represents a linear or branched alkyl group having 1-12 carbon atoms or a hydrogen atom, R3 represents a linear or branched alkyl group having 1-12 carbon atoms which may be either the same as or different from R2, and R4 represents a linear or branched alkyl group having 1-4 carbon atoms.
An olefin polymerization catalyst comprising the following components (A2), (B), and (C):
- (A2) a solid catalyst component prepared by contacting (a1) a dialkoxymagnesium, (b1) a tetravalent titanium halide, and (c2) a phthalic acid diester derivative,
- (B) an organoaluminum compound of the following formula (1),
- R1pAlQ3-p (1)
- wherein R1 represents an alkyl group having 1-4 carbon atoms, Q represents a hydrogen atom or a halogen atom, and p represents a real number satisfying the formula 0<p≦-3, and
- (C) an aminosilane compound of the following formula (2),
- (R2R3N) Si (OR4)3 (2)
- wherein R2 represents a linear or branched alkyl group having 1-12 carbon atoms or a hydrogen atom, R3 represents a linear or branched alkyl group having 1-12 carbon atoms which may be either the same as or different from R2, and R4 represents a linear or branched alkyl group having 1-4 carbon atoms.
Dependencies are inferred from the claim text.