Method of polymerizing an olefin using a novel transition metal compound
    5.
    发明授权
    Method of polymerizing an olefin using a novel transition metal compound 失效
    使用新型过渡金属化合物使烯烃聚合的方法

    公开(公告)号:US5439994A

    公开(公告)日:1995-08-08

    申请号:US277570

    申请日:1994-07-20

    摘要: A novel transition metal compound represented by the formula ##STR1## (wherein each of A.sup.1, A.sup.2, A.sup.3 and A.sup.4 is a cyclopentadienyl group, an indenyl group, a fluorenyl group or their derivative; A.sup.5 is a hydrocarbondiylidene group having 4 to 30 carbon atoms; a pair of A.sup.1 and A.sup.2 as well as a pair of A.sup.3 and A.sup.4 is respectively bonded to the identical carbon atom in A.sup.5 to form a crosslinking structure; each of R.sup.1 and R.sup.2 is a halogen atom, a hydrogen atom, an alkyl group or a silicon-containing alkyl group having 1 to 10 carbon atoms, an aryl group, an alkylaryl group, an arylalkyl group or a halogenated aryl group having 6 to 20 carbon atoms; R.sup.1 and R.sup.2 may be identical or different; each of M.sup.1 and M.sup.2 is titanium, zirconium or hafnium; and M.sup.1 and M.sup.2 may be mutually identical or different), and a method for polymerizing an olefin in the presence of this compound and a co-catalyst. The employment of the combination of the above-mentioned compound and another known transition metal compound as the transition metal compounds permits preparing a polyolefin having a wide molecular weight distribution.

    摘要翻译: 由式(I)表示的新型过渡金属化合物(其中,A1,A2,A3和A4各自为环戊二烯基,茚基,芴基或其衍生物; A5为烃基亚乙基, 30个碳原子;一对A1和A2以及一对A3和A4分别与A5中的相同碳原子键合以形成交联结构; R1和R2各自为卤素原子,氢原子, 烷基或碳原子数为1〜10的含硅烷基,芳基,烷芳基,芳烷基或碳原子数为6〜20的卤代芳基; R 1和R 2可以相同或不同, M1和M2是钛,锆或铪; M1和M2可以相互相同或不同),以及在该化合物和助催化剂存在下使烯烃聚合的方法。 使用上述化合物和另一种已知的过渡金属化合物作为过渡金属化合物的组合可以制备具有宽分子量分布的聚烯烃。

    Transition metal compound having two transition metal atoms in one
molecule and method for polymerizing olefin by using the compound
    6.
    发明授权
    Transition metal compound having two transition metal atoms in one molecule and method for polymerizing olefin by using the compound 失效
    在一个分子中具有两个过渡金属原子的过渡金属化合物和通过使用该化合物聚合烯烃的方法

    公开(公告)号:US5359102A

    公开(公告)日:1994-10-25

    申请号:US941056

    申请日:1992-10-08

    摘要: A transition metal compound represented by the formula ##STR1## (wherein each of A.sup.1, A.sup.2, A.sup.3 and A.sup.4 is a cyclopentadienyl group, an indenyl group, a fluorenyl group or their derivative; A.sup.5 is a hydrocarbondiylidene group having 4 to 30 carbon atoms; a pair of A.sup.1 and A.sup.2 as well as a pair of A.sup.3 and A.sup.4 is respectively bonded to the identical carbon atom in A.sup.5 to form a crosslinking structure; each of R.sup.1 and R.sup.2 is a halogen atom, a hydrogen atom, an alkyl group or a silicon-containing alkyl group having 1 to 10 carbon atoms, an aryl group, an alkylaryl group, an arylalkyl group or a halogenated aryl group having 6 to 20 carbon atoms; R.sup.1 and R.sup.2 may be identical or different; each of M.sup.1 and M.sup.2 is titanium, zirconium or hafnium; and M.sup.1 and M.sup.2 may be mutually identical or different), and a method for polymerizing an olefin in the presence of this compound and a co-catalyst. A combination of the above-mentioned compound and another known transition metal compound as the transition metal compounds permits preparation of a polyolefin having a wide molecular weight distribution.

    摘要翻译: PCT No.PCT / JP92 / 00080 Sec。 371日期:1992年10月8日 102(e)日期1992年10月8日PCT提交1992年1月29日PCT公布。 出版物WO92 / 15596 1,由式(I)表示的过渡金属化合物(其中A1,A2,A3和A4各自为环戊二烯基,茚基,芴基或其衍生物; A5为 具有4-30个碳原子的亚烃基亚基;一对A1和A2以及一对A3和A4分别与A5中的相同碳原子键合形成交联结构; R1和R2各自为卤素原子 具有1〜10个碳原子的氢原子,烷基或含硅烷基,芳基,烷芳基,芳烷基或碳原子数为6〜20的卤代芳基; R1和R2可以是 相同或不同; M1和M2各自为钛,锆或铪; M1和M2可以相互相同或不同),以及在该化合物和助催化剂存在下使烯烃聚合的方法。 作为过渡金属化合物的上述化合物和另一种已知的过渡金属化合物的组合可以制备具有宽分子量分布的聚烯烃。

    Propylene copolymer
    8.
    发明授权
    Propylene copolymer 失效
    丙烯共聚物

    公开(公告)号:US5219968A

    公开(公告)日:1993-06-15

    申请号:US777238

    申请日:1991-11-12

    摘要: A substantially syndiotactic propylene copolymer which comprises propylene and at least one cyclic diolefin having 6 to 25 carbon atoms or an alkadiene having 6 to 25 carbon atoms and at least one terminal double bond, in the .sup.13 C-NMR spectrum of the copolymer measured in a 1,2,4-trichlorobenzene solution, a peak intensity observed at about 20.2 ppm as the reference of tetramethylsilane at 0.0 ppm being 0.5 or more of the total peak intensity attributed to methyl groups of propylene; the content of the cyclic diolefin or the alkadiene being from 0.01 to 20 mol %; the intrinsic viscosity [.eta.] of the copolymer measured in a tetralin solution at 135.degree. C. being from 0.1 to 10 dl/g.This copolymer can contain an .alpha.-olefin other than propylene, particularly ethylene.

    摘要翻译: PCT PCT / JP91 / 00466 Sec。 371日期1991年11月12日 102(e)日期1991年11月12日PCT 1991年4月9日PCT PCT。 第WO91 / 15523号公报 日本1991年10月17日。在13 C-NMR光谱中包含丙烯和至少一种具有6至25个碳原子的环状二烯烃或具有6至25个碳原子和至少一个末端双键的链二烯的基本间同立构丙烯共聚物 在1,2,4-三氯苯溶液中测定的共聚物,作为0.0ppm的四甲基硅烷的参考值,在约20.2ppm处观察到的峰强度为归因于丙烯的甲基的总峰强度的0.5以上; 环状二烯烃或链二烯的含量为0.01〜20摩尔% 在135℃下在四氢化萘溶液中测得的共聚物的特性粘度η为0.1-10dl / g。 该共聚物可以含有除丙烯以外的α-烯烃,特别是乙烯。