To provide a catalyst composition having high polymerization activity. To provide a polymer manufacturing method. To provide a polymer manufactured by the polymer manufacturing method. To provide a rubber composition including the polymer. To provide a tire using the rubber composition. A catalyst composition including a compound represented by Structural Formula I below, wherein the compound has an OH group at at least one position of the bipyridyl ring; M is a transition metal, a lanthanoid, scandium, or yttrium; R.sup.1 and R.sup.2 are a hydrocarbon group having one or more carbon atoms or a halogen atom; and R.sup.1 and R.sup.2 may be the same or different from each other. A polymer manufacturing method including a step of polymerizing one or more selected from the group consisting of a conjugated diene compound and a compound having an ethylenically unsaturated double bond in the presence of the catalyst composition. A polymer manufactured by the manufacturing method. A rubber composition including the polymer. A tire using the rubber composition.

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The present invention provides a method for preparing an oligomer and a catalyst comprising a step of oligomerizing a polymerizable monomer containing an olefin in the presence of a catalyst, which comprises (A) a complex of a diimine compound and at least one metal selected from the group consisting of Group 8 elements, Group 9 elements and Group 10 elements, (B) a mixture of a pyridine diimine compound and an iron salt and/or an iron complex, (C) methylaluminoxane and/or a boron compound, and (D) an organoaluminum compound other than methylaluminoxane and/or an organozinc compound. The components (A), (B), (C) and (D) described above are respectively as defined in the present Description.

The present invention provides a spherical supported transition metal catalyst. The catalyst carrier is a spherical titanium/zirconium hydrophosphate compound, the primary catalyst is a transition metal compound, the co-catalyst is methylaluminoxane; the spherical titanium/zirconium hydrophosphate compound comprises one or several combinations of titanium hydrophosphate, modified titanium hydrophosphate and zirconium hydrophosphate. The present invention also provides a preparation method of said spherical supported transition metal catalyst and a use thereof in olefin polymerization, as well as the spherical titanium/zirconium hydrophosphate compound and its preparation method. The spherical, supported transition metal catalyst in the present invention has a high catalytic activity, and the polymer particles obtained have good morphology.

The present invention provides a spherical supported transition metal catalyst. The catalyst carrier is a spherical titanium/zirconium hydrophosphate compound, the primary catalyst is a transition metal compound, the co-catalyst is methylaluminoxane; the spherical titanium/zirconium hydrophosphate compound comprises one or several combinations of titanium hydrophosphate, modified titanium hydrophosphate and zirconium hydrophosphate. The present invention also provides a preparation method of said spherical supported transition metal catalyst and a use thereof in olefin polymerization, as well as the spherical titanium/zirconium hydrophosphate compound and its preparation method. The spherical, supported transition metal catalyst in the present invention has a high catalytic activity, and the polymer particles obtained have good morphology.

The invention provides an olefin-olefinic alcohol copolymer and a preparation method thereof, said copolymer comprising a spherical and/or spherical-like polymer. The copolymer provided by the invention exhibits a good morphology and has good prospects in industrial use.

The invention provides an olefin-olefinic alcohol copolymer and a preparation method thereof, said copolymer comprising a spherical and/or spherical-like polymer. The copolymer provided by the invention exhibits a good morphology and has good prospects in industrial use.

The present invention provides a copolymer of an olefin and an unsaturated carboxylic acid or an unsaturated carboxylic acid derivative, said copolymer being a spherical and/or spherical-like polymer. The copolymer provided by the invention exhibits a good morphology and has good prospects in industrial use.

The present invention provides a copolymer of an olefin and an unsaturated carboxylic acid or an unsaturated carboxylic acid derivative, said copolymer being a spherical and/or spherical-like polymer. The copolymer provided by the invention exhibits a good morphology and has good prospects in industrial use.

A process for preparing conjugated diene (co)polymers comprising polymerizing at least one conjugated diene in the presence of a catalytic system comprising: (a) at least one pyridyl iron (III) complex having general formula (I) or (II): wherein: R.sub.1, R.sub.2, R.sub.3 and R.sub.4, identical or different, represent a hydrogen atom; or are selected from linear or branched, optionally halogenated C.sub.1-C.sub.20, preferably C.sub.1-C.sub.15, alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups; R.sub.5 represents a hydrogen atom, or is selected from linear or branched, optionally halogenated C.sub.1-C.sub.20, preferably C.sub.1-C.sub.15, alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups; X, identical or different, represent a halogen atom such as, for example, chlorine, bromine, iodine; or are selected from linear or branched C.sub.1-C.sub.20, preferably C.sub.1-C.sub.15, alkyl groups, OCOR.sub.6 groups or OR.sub.6 groups wherein R.sub.6 is selected from linear or branched C.sub.1-C.sub.20, preferably C.sub.1-C.sub.15, alkyl groups. n is 3; (b) at least one co-catalyst selected from organo-aluminum derivatives, preferably from: (b.sub.1) aluminum compounds having general formula (III): Al(R.sub.7)(R.sub.8)(R.sub.9) (IIl) wherein R.sub.7 represents a hydrogen atom, or is selected from linear or branched C.sub.1-C.sub.20 alkyl groups, cycloalkyl groups, aryl groups, alkylaryl groups, arylalkyl groups, alkoxy groups; R.sub.8 and R.sub.9, identical or different, are selected from linear or branched C.sub.1-C.sub.20 alkyl groups, cycloalkyl groups, aryl groups, alkylaryl groups, arylalkyl groups; (b.sub.2) aluminoxanes having general formula (IV): (R.sub.10).sub.2AlO[-AI(R.sub.11)O-].sub.m-AI-(R.sub.12).sub.2 (IV), wherein R.sub.10, R.sub.11 and R.sub.12, identical or different, represent a hydrogen atom, or a halogen atom such as chlorine, bromine, iodine, fluorine; or are selected from linear or branched C.sub.1-C.sub.20 alkyl groups, cycloalkyl groups, aryl groups, said groups being optionally substituted with one or more silicon or germanium atoms; and m is an integer ranging from 0 to 1000; (b.sub.3) partially hydrolyzed organo-aluminum derivatives; (b.sub.4) haloaluminum alkyls having general formula (V) or (VI): AI(R.sub.13).sub.p(X).sub.3-p (V) AI.sub.2(R.sub.13).sub.q(X).sub.3-q (VI) wherein p is 1 or 2; q is an integer ranging from 1 to 5; R.sub.13, identical or different, are selected from linear or branched C.sub.1-C.sub.20 alkyl groups; X represents a chlorine or bromine atom, preferably chlorine; provided that said co-catalyst (b) is not selected from organo-boron der

A process for preparing conjugated diene (co)polymers comprising polymerizing at least one conjugated diene in the presence of a catalytic system comprising: (a) at least one pyridyl iron (III) complex having general formula (I) or (II): wherein: R.sub.1, R.sub.2, R.sub.3 and R.sub.4, identical or different, represent a hydrogen atom; or are selected from linear or branched, optionally halogenated C.sub.1-C.sub.20, preferably C.sub.1-C.sub.15, alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups; R.sub.5 represents a hydrogen atom, or is selected from linear or branched, optionally halogenated C.sub.1-C.sub.20, preferably C.sub.1-C.sub.15, alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups; X, identical or different, represent a halogen atom such as, for example, chlorine, bromine, iodine; or are selected from linear or branched C.sub.1-C.sub.20, preferably C.sub.1-C.sub.15, alkyl groups, OCOR.sub.6 groups or OR.sub.6 groups wherein R.sub.6 is selected from linear or branched C.sub.1-C.sub.20, preferably C.sub.1-C.sub.15, alkyl groups. n is 3; (b) at least one co-catalyst selected from organo-aluminum derivatives, preferably from: (b.sub.1) aluminum compounds having general formula (III): Al(R.sub.7)(R.sub.8)(R.sub.9) (IIl) wherein R.sub.7 represents a hydrogen atom, or is selected from linear or branched C.sub.1-C.sub.20 alkyl groups, cycloalkyl groups, aryl groups, alkylaryl groups, arylalkyl groups, alkoxy groups; R.sub.8 and R.sub.9, identical or different, are selected from linear or branched C.sub.1-C.sub.20 alkyl groups, cycloalkyl groups, aryl groups, alkylaryl groups, arylalkyl groups; (b.sub.2) aluminoxanes having general formula (IV): (R.sub.10).sub.2AlO[-AI(R.sub.11)O-].sub.m-AI-(R.sub.12).sub.2 (IV), wherein R.sub.10, R.sub.11 and R.sub.12, identical or different, represent a hydrogen atom, or a halogen atom such as chlorine, bromine, iodine, fluorine; or are selected from linear or branched C.sub.1-C.sub.20 alkyl groups, cycloalkyl groups, aryl groups, said groups being optionally substituted with one or more silicon or germanium atoms; and m is an integer ranging from 0 to 1000; (b.sub.3) partially hydrolyzed organo-aluminum derivatives; (b.sub.4) haloaluminum alkyls having general formula (V) or (VI): AI(R.sub.13).sub.p(X).sub.3-p (V) AI.sub.2(R.sub.13).sub.q(X).sub.3-q (VI) wherein p is 1 or 2; q is an integer ranging from 1 to 5; R.sub.13, identical or different, are selected from linear or branched C.sub.1-C.sub.20 alkyl groups; X represents a chlorine or bromine atom, preferably chlorine; provided that said co-catalyst (b) is not selected from organo-boron der