Syndiotactic vinylidene aromatic polymerization process
    2.
    发明授权
    Syndiotactic vinylidene aromatic polymerization process 失效
    间规亚乙烯芳族聚合方法

    公开(公告)号:US6075104A

    公开(公告)日:2000-06-13

    申请号:US125954

    申请日:1998-08-26

    摘要: A process for polymerizing vinylidene aromatic monomers, such as styrene, to produce polymers having a high degree of syndiotacticity using a catalyst composition comprising a Group 4 metal complex and a hydrocarbylsilane or di(hydrocarbyl)silane catalyst adjuvant is disclosed.

    摘要翻译: PCT No.PCT / US97 / 06428 Sec。 371日期:1998年8月26日 102(e)日期1998年8月26日PCT 1997年4月17日PCT公布。 公开号WO97 / 42234 日期1997年11月13日公开了使用包含第4族金属络合物和烃基硅烷或二(烃基)硅烷催化剂助剂的催化剂组合物使亚乙烯基芳族单体如苯乙烯聚合以制备具有高程度间同立构规整度的聚合物的方法。

    Syndiotactic monovinylidene aromatic polymerization process
    7.
    发明授权
    Syndiotactic monovinylidene aromatic polymerization process 失效
    间规单亚乙烯基芳香族聚合方法

    公开(公告)号:US06355745B1

    公开(公告)日:2002-03-12

    申请号:US09701897

    申请日:2000-12-04

    IPC分类号: C08F4643

    摘要: A process for preparing syndiotactic monovinylidene aromatic polymers comprising contacting one or more monovinylidene aromatic monomers with a catalyst composition comprising a Group 4 metal complex and an activating cocatalyst composition comprising an aluminoxane and an electrophilic borane compound.

    摘要翻译: 制备间同立构单亚乙烯基芳族聚合物的方法,包括使一种或多种单亚乙烯基芳族单体与包含第4族金属络合物的催化剂组合物和包含铝氧烷和亲电子硼烷化合物的活化助催化剂组合物接触。

    Syndiotactic vinylaromatic polymerization process using low hydrogen
partial pressures
    9.
    发明授权
    Syndiotactic vinylaromatic polymerization process using low hydrogen partial pressures 失效
    使用低氢分压的间同立构乙烯基芳烃聚合方法

    公开(公告)号:US5468818A

    公开(公告)日:1995-11-21

    申请号:US402446

    申请日:1995-03-13

    摘要: A process for preparing syndiotactic polymers of vinylaromatic monomers comprising contacting one or more vinylaromatic monomers with a catalyst system comprising a pentamethylcyclopentadienyltitanium based metal complex capable of preparing syndiotactic vinylaromatic polymers under coordination polymerization conditions in the presence of hydrogen gas at a hydrogen partial pressure from 10 to 45 kPa and maintaining said partial pressure of hydrogen continuously throughout the polymerization.

    摘要翻译: 一种用于制备乙烯基芳族单体的间同立构聚合物的方法,包括使一种或多种乙烯基芳族单体与催化剂体系接触,所述催化剂体系包含五甲基环戊二烯基钛基金属络合物,其能够在配位聚合条件下,在氢气存在下,在氢分压为10〜 45kPa,并且在整个聚合过程中持续保持氢的分压。

    Method for producing octahydrofluorenyl metal complexes
    10.
    发明授权
    Method for producing octahydrofluorenyl metal complexes 失效
    制备八氢芴基金属配合物的方法

    公开(公告)号:US5670680A

    公开(公告)日:1997-09-23

    申请号:US638256

    申请日:1996-04-26

    IPC分类号: C07F7/28 C07F17/00

    CPC分类号: C07F17/00 Y10S526/943

    摘要: Octahydrofluorenyl metal complexes, such as octahydrofluorenyltitanium trichloride, or ring substituted octahydrofluorenyl metal complexes wherein the metal is in the +2, +3 or +4 formal oxidation state are prepared by reduction of tetra- or hexa-hydrofluorenyl metal complexes. The reduction reaction may be carried out at ambient pressure and temperature in the presence of a catalyst. The process of the present invention permits preparation of octahydrofluorenyltitanium metal complexes from a series of high yield reactions starting with fluorene.

    摘要翻译: 八氢芴基三氯化钛的八氢芴基金属络合物或其中金属为+2,+3或+4形式氧化态的环取代的八氢芴基金属络合物通过还原四或六氢芴基金属络合物来制备。 还原反应可以在环境压力和温度下在催化剂存在下进行。 本发明的方法允许从芴开始的一系列高产率反应制备八氢芴基钛金属络合物。