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    Metallocene catalyst for producing polyolefins
    3.
    发明专利
    Metallocene catalyst for producing polyolefins 未知

    公开(公告)号：GB2305178A

    公开(公告)日：1997-04-02

    申请号：GB9618794

    申请日：1996-09-09

    Applicant: DAICEL CHEM

    Inventor： SOGA KAZUO ,  UOZUMI TOSHIYA ,  ARAI TAKASHI

    IPC: C08F4/02 ,  C08F4/60 ,  C08F4/64 ,  C08F4/642 ,  C08F4/659 ,  C08F4/6592 ,  C08F10/00 ,  C08F110/06 ,  C07F19/00 ,  C08G77/398

    Abstract: A catalyst for producing a poly-* small Greek alpha *-olefin which comprises a metallocene compound containing an element of group IVA bonded to an organic polymer containing an element of group IVB; and a process for producing a poly-* small Greek alpha *-olefin which comprises polymerizing an * small Greek alpha *-olefin in the presence of the above-described catalyst and also a specified aluminoxane as a co-catalyst. The catalyst comprises a polysiloxane having pendent groups selected from cyclopentadiene, fluorene and indene linked to a transition metal halide such as zirconium chloride. The catalyst is prepared by reacting R 2 Si(Hal) 2 where R is cyclopentadienyl, fluorenyl or indenyl with water followed by addition of butyllithium and a transition metal halide.

    CYCLOOLEFIN POLYMER, CATALYST FOR POLYMERIZING CYCLOOLEFIN AND PRODUCTION OF THE SAME POLYMER
    5.
    发明专利
    CYCLOOLEFIN POLYMER, CATALYST FOR POLYMERIZING CYCLOOLEFIN AND PRODUCTION OF THE SAME POLYMER 失效

    公开(公告)号：JPH03205408A

    公开(公告)日：1991-09-06

    申请号：JP14952590

    申请日：1990-06-07

    Applicant: DAICEL CHEM

    Inventor： SOGA KAZUO ,  TAKAHASHI IKUO

    IPC: C08F10/00 ,  C08F4/60 ,  C08F4/602 ,  C08F4/642 ,  C08F4/6592 ,  C08F10/14 ,  C08F32/00 ,  C08F36/00 ,  C08F36/20

    Abstract: PURPOSE:To obtain a high-mol.wt. cycloolefin polymer in good yiedls by polymerizing a cycloolefin or a cycloolefin having an unsaturated bond outside the ring in the presence of a specified polymerization catalyst. CONSTITUTION:A polymerization catalyst is obtained by combining 10 -10 g atom/l (in terms of the metal) of a compound of a transition metal selected from among IVB, VB and VIII groups of the periodic table [e.g. palladium (II) acetate] with 10 -10g atom/l (in terms of Al) of aluminoxanes of formulas I and/or II (wherein R to R are each a hydrocarbon group; and n>=1) in a ratio of the number of the Al atoms to that of the transition metal atoms of 1-10 . A cycloolefin (e.g. cyclopropene) or a cycloolefin having an unsaturated bond outside the ring (e.g. 5-vinyl-2-norbornene) is polymerized at -50 to 230 deg.C in the presence of said polymerization catalyst to obtain a cycloolefin polymer comprising at least one kind of repeating units of formulas III-V [wherein R to R are each H, halogen or an (un)saturated hydrocarbon group; l and p each >=3; and m and n each >=0) and having a number-average mol.wt. (in terms of PS) of 700-200000.

    PROCESS AND CATALYST FOR PRODUCING POLYOLEFIN
    6.
    发明专利
    PROCESS AND CATALYST FOR PRODUCING POLYOLEFIN 失效

    公开(公告)号：JPH10292007A

    公开(公告)日：1998-11-04

    申请号：JP10306497

    申请日：1997-04-21

    Applicant: DAICEL CHEM

    Inventor： ARAI TAKASHI ,  SOGA KAZUO ,  UOZUMI TOSHIYA

    IPC: C08F4/658 ,  C08F4/6592 ,  C08F10/00

    Abstract: PROBLEM TO BE SOLVED: To obtain a catalyst for the production of a poly-α-olefin having a low atactic component and highly stereoregular isotactic component by impregnating a magnesium halide with an organometallic compound and forming only a recemic modification structure of a zirconium metallocene compound on its surface. SOLUTION: The organometallic compound used is a compound of formula I (wherein R and R are each an organic liquid such as cyclopentadienyl, indenyl, fluorenyl or a derivative thereof; M is a group IVB transition metal; and X is a halogen). This is reacted with a halide of a group IVA metal (M ) to obtain a compound represented by formula II (wherein M is an element typified by a group IVB element; R and R are each as defined in formula I; M is a group IVA transition metal element; and X and X are each a halogen). A magnesium halide is impregnated with the organometallic compound of formula II to obtain a catalyst for the production of a poly-α-olefin. This is combined with a promoter such as a water-modified organoaluminum compound of a trialkylaluminum compound of formula IV (wherein R is a 1-10C alkyl).

    CATALYST FOR PRODUCING POLYOLEFIN AND PRODUCTION OF OLEFIN
    7.
    发明专利
    CATALYST FOR PRODUCING POLYOLEFIN AND PRODUCTION OF OLEFIN 失效

    公开(公告)号：JPH0977819A

    公开(公告)日：1997-03-25

    申请号：JP23237095

    申请日：1995-09-11

    Applicant: DAICEL CHEM

    Inventor： SOGA KAZUO ,  UOZUMI TOSHIYA ,  ARAI TAKASHI

    IPC: C08F4/02 ,  C08F4/60 ,  C08F4/64 ,  C08F4/642 ,  C08F4/659 ,  C08F4/6592 ,  C08F10/00 ,  C08F110/06

    Abstract: PROBLEM TO BE SOLVED: To obtain a new catalyst for producing polyolefin capable of producing poly-α-olefin having high stereoregularity by allowing to comprise a new organic metal polymer in which a metal is coordinated to an organic polymer which binds metallocene ligands to the main chain. SOLUTION: This new catalyst for producing polyolefin comprises an organic metal polymer expressed by the formula, -[O-M R R M X2 ]n - (M is a typical element of IVB group in the periodic table; R and R are each a cyclopentadienyl, indenyl, etc.; M is a transition metal element of IVA group in the periodic table; X is a halogen; (n) is 4-18). The polymer can be preferably obtained by reacting an organic compound of the formula, R R M X2 with water to obtain an organic polymer to which a metal chloride of IV group is reacted. As M in the organic compound of the formula, R R M X2 , a chloride with zirconium is preferable. As a cocatalyst, methylaluminoxane obtained by reacting trimethylaluminum with water can be preferably used.

    PRODUCTION OF CYCLOOLEFIN POLYMER
    8.
    发明专利
    PRODUCTION OF CYCLOOLEFIN POLYMER 失效

    公开(公告)号：JPH02180910A

    公开(公告)日：1990-07-13

    申请号：JP33233088

    申请日：1989-01-04

    Applicant: DAICEL CHEM

    Inventor： SOGA KAZUO ,  TAKAHASHI IKUO

    IPC: C08F4/60 ,  C08F4/64 ,  C08F4/6592 ,  C08F32/00 ,  C08F36/00

    Abstract: PURPOSE:To obtain a polymer of a narrow MW distribution in good efficiency by polymerizing a cycloolefin optionally having an unsaturated bond outside the ring in the presence of a catalyst comprising a combination of a transition metal compound with an aluminooxane. CONSTITUTION:The purpose polymer is obtained by polymerizing a cycloolefin optionally having an unsaturated bond outside the ring in the presence of a catalyst comprising a transition metal compound (a) and an aluminooxane (b). The compound (a) is one containing a metal selected from among group IV b, V b and VI b elements of the periodic table, among which a titanium or zirconium compound is desirable because of its high activity. A desirable form of this compound is one having a halogen atom, one having a halogen atom and a hydrocarbon group or one having an alkoxy group.

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