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US 6,207,773 B1Granted
Metallocene catalyst for preparing olefin polymer
AssigneesIndustrial Technology Research Institute, Taiwan Synthetic Rubber Corporation, Chinese Petroleum Corporation
InventorsChing Ting, Jing-Cherng Tsai, Yi-Chun Chen, Sung-Song Hua, Tsai-Tien Su, Yu-Shan Chao
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Abstract
A metallocene complex in which the cyclopentadienyl group is substituted with an alkanediyl silyl group. The yield of the metallocene complex is high, and it can be used as the catalyst for preparing high molecular weight olefin polymers.
Claims58
A metallocene complex which is represented by the following formula:
- wherein:
- M is a Group IVB transition metal with an oxidation state of +4;
- Z is a Group IVA element;
- R1 is a divalent unsubstituted or substituted C3-6 alkanediyl group which forms a ring system with Z, wherein the substituent is selected from the group consisting of C1-20 alkyl, C1-20 alkenyl, C6-20 aryl, C7-20 alkylaryl, and C7-20 arylalkyl;
- R2 can be the same or different and is H, a C1-20 linear, branched or cyclic hydrocarbyl group, or a silyl group, or two adjacent R2 groups combine together to form with the carbon atoms to which they are attached a C4-6 fused ring system;
- X is independently an anionic ligand with a −1 valence;
- Y is a Group VA element or a Group VIA element;
- q is 1 when Y is a Group VA element, and q is 0 when Y is a Group VIA element;
- and
- R3 is H, or a C1-20 linear, branched or cyclic hydrocarbyl group.
7 more elements
A process for preparing an olefin polymer, comprising the step of
- (1) polymerizing an olefin, or
- (2) polymerizing an olefin with another monomer, under polymerizing conditions in the presence of a catalytically effective amount of the metallocene complex catalyst composition comprising:
- (a) a metallocene complex which is represented by the following formula:
- wherein:
- M is a Group IVB transition metal with an oxidation state of +4;
- Z is a Group IVA element;
- R1 is a divalent unsubstituted or substituted C3-6 alkanediyl group which forms a ring system with Z, wherein the substituent is selected from the group consisting of C1-20 alkyl, C1-20 alkenyl, C6-20 aryl, C7-20 alkylaryl, and C7-20 arylalkyl;
- R2 can be the same or different and is H, a C1-20 linear, branched or cyclic hydrocarbyl group, or a silyl group, or two adjacent R2 groups combine together to form with the carbon atoms to which they are attached a C4-6 fused ring system;
- X is independently an anionic ligand with a −1 valence;
- Y is a Group VA element or a Group VIA element;
- q is 1 when Y is a Group VA, element, and q is 0 when Y is a Group VIA element;
- and
- R3 is H, or a C1-20 linear, branched or cyclic hydrocarbyl group;
- and
- (b) an activating cocatalyst selected from the group consisting of methyl aluminoxane, a trialkyl aluminum, a dialkyl aluminum halide, a salt of an inert and non-coordinating anion, and mixtures thereof.
12 more elements
A metallocene complex which is represented by the following formula:
- wherein:
- M is selected from the group consisting of a Group IIIB transition metal, a lanthanide, and Ti with an oxidation state of +3;
- Z is a Group IVA element;
- R1 is a divalent unsubstituted or substituted C3-6 alkanediyl group which forms a ring system with Z, wherein the substituent is selected from the group consisting of C1-20 alkyl, C1-20 alkenyl, C6-20 aryl, C7-20 alkylaryl, and C7-20 arylalkyl;
- R2 can be the same or different and is H, a C1-20 linear, branched or cyclic hydrocarbyl group, or a silyl group, or two adjacent R2 groups combine to form with the carbon atoms to which they are attached a C4-6 fused ring system;
- X is independently an anionic ligand with a −1 valence;
- Y is a Group VA element or a Group VIA element;
- q is 2 when Y is a Group VA element, and q is 1 when Y is a Group VIA element;
- and
- R3 is H, or a C1-20 linear, branched or cyclic hydrocarbyl group.
7 more elements
A process for preparing an olefin polymer comprising the step of
- (1) polymerizing an olefin, or
- (2) polymerizing an olefin with another monomer, under polymerizing conditions in the presence of a catalytically effective amount of the metallocene complex catalyst composition comprising:
- (a) a metatocene complex which is represented by the following formula:
- wherein:
- M is selected from the group consisting of a Group IIIB transition metal, a lanthanide, and Ti with an oxidation state of +3;
- Z is a Group IVA element;
- R1 is a divalent unsubstituted or substituted C3-6 alkanediyl group which forms a ring system with Z, wherein the substituent is selected from the group consisting of C1-20 alkyl, C1-20 alkenyl, C6-20 aryl, C7-20 alkylaryl, and C7-20 arylalkyl;
- R2 can be the same or different and is H, a C1-20 linear, branched or cyclic hydrocarbyl group, or a silyl group, or two adjacent R2 groups combine to form with the carbon atoms to which they are attached a C4-6 fused ring system;
- X is independently an anionic ligand with a −1 valence;
- Y is a Group VA element or a Group VIA element;
- q is 2 when Y is a Group VA element and q is 1 when Y is a Group VLA element;
- and
- R3 is H, or a C1-20 linear, branched or cyclic hydrocarbyl group and;
- (b) an activating cocatalyst selected from the group consisting of methyl aluminoxane, a trialkyl aluminum, a dialkyl aluminum halide, a salt of an inert and non-coordinating anion, and mixtures thereof.
11 more elements
Dependencies are inferred from the claim text.