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46 条记录 (耗时 0.025 秒)

    Process for purification of styrene polymer
    2.
    发明授权
    Process for purification of styrene polymer 失效
    苯乙烯聚合物的纯化方法

    公开(公告)号：US5321122A

    公开(公告)日：1994-06-14

    申请号：US964560

    申请日：1992-10-21

    申请人： Masahiko Kuramoto ,  Hideo Teshima

    发明人： Masahiko Kuramoto ,  Hideo Teshima

    IPC分类号： C08F6/02 ,  C08F6/08

    CPC分类号： C08F6/02 ,  Y10S526/943

    摘要： There is disclosed a process for purification of a styrene polymer, for purifying a styrene polymer having a high degree of syndiotacticity obtained by using a catalyst comprising (A) aluminoxane and (B) a transition metal compound containing no halogen, deashing the above styrene polymer with an alcoholic alkaline solution and then washing with an alcohol. Also disclosed is a process for purification of a styrene polymer which comprises deashing the above styrene polymer having been produced with a conversion rate of 60% or more after swelling it by adding an aromatic solvent and/or a styrene monomer.According to the process of the present invention, a high purity styrene polymer can be obtained with good efficiency.

    摘要翻译： 公开了一种纯化苯乙烯聚合物的方法，用于纯化通过使用包含（A）铝氧烷和（B）不含卤素的过渡金属化合物的催化剂获得的具有高程度的间同立构规整度的苯乙烯聚合物，将上述苯乙烯聚合物 用酒精碱溶液，然后用酒精洗涤。 还公开了一种用于纯化苯乙烯聚合物的方法，其包括通过加入芳族溶剂和/或苯乙烯单体使其膨胀之后以60％或更高的转化率除去上述苯乙烯聚合物。 根据本发明的方法，可以以高效率获得高纯度苯乙烯聚合物。

    Process for producing syndiotactic styrene copolymer
    3.
    发明授权
    Process for producing syndiotactic styrene copolymer 失效
    间同立构苯乙烯共聚物的制备方法

    公开(公告)号：US5189125A

    公开(公告)日：1993-02-23

    申请号：US728005

    申请日：1991-07-01

    申请人： Nobuhide Ishihara ,  Masahiko Kuramoto ,  Michitake Uoi

    发明人： Nobuhide Ishihara ,  Masahiko Kuramoto ,  Michitake Uoi

    IPC分类号： C08F12/00 ,  C08F12/04

    CPC分类号： C08F12/00 ,  C08F12/04 ,  C08F4/65912 ,  Y10S526/905

    摘要： Styrene homo-or-co- polymers, the stereoregularity of which is mainly syndiotactic are disclosed, having repeating unit or two or more different repeating units defined by a general formula (I): ##STR1## wherein each R may be the same or different. And a method of preparation of syndiotactic copolymers wherein there are two different repeating units represented by formula (I); wherein the polymerization is carried out with a catalyst comprising (a) a titanium compound and (b) a contact product of an organoaluminum compound and a condensing agent such as water.

    摘要翻译： 公开了具有重复单元或两个或更多个由通式（I）定义的不同重复单元的苯乙烯均聚物，其立构规整性主要是间同立构的：其中每个R可以是 相同或不同 和间同立构共聚物的制备方法，其中存在由式（I）表示的两个不同的重复单元; 其中聚合反应使用包含（a）钛化合物和（b）有机铝化合物和缩合剂如水的接触产物的催化剂进行。

    Process for producing homogeneous aluminoxane solution
    4.
    发明授权
    Process for producing homogeneous aluminoxane solution 失效
    生产均匀的铝氧烷溶液的方法

    公开(公告)号：US5093295A

    公开(公告)日：1992-03-03

    申请号：US490338

    申请日：1990-03-08

    申请人： Norio Tomotsu ,  Masahiko Kuramoto

    发明人： Norio Tomotsu ,  Masahiko Kuramoto

    IPC分类号： C07F5/06 ,  C08F4/62 ,  C08F10/00

    CPC分类号： C07F5/068 ,  C08F10/00

    摘要： The present invention provides a process for producing a homogeneous aluminoxane solution wherein an alkylaminoxane (A) obtained by reacting an organoaluminum compound with water and removing a solid residue by filtration is reacted with an organoaluminum compound (C) in the presence of an aromatic hydrocarbon solvent (B). According to the present invention, the gel-free homogeneous aluminoxane solution can be obtained and the catalytic activity thereof is not deteriorated during the storage.

    Styrene copolymer and process for production thereof
    9.
    发明授权
    Styrene copolymer and process for production thereof 失效
    苯乙烯共聚物及其制备方法

    公开(公告)号：US5260394A

    公开(公告)日：1993-11-09

    申请号：US582836

    申请日：1990-10-05

    申请人： Toshinori Tazaki ,  Masahiko Kuramoto

    发明人： Toshinori Tazaki ,  Masahiko Kuramoto

    IPC分类号： C08F4/642 ,  C08F210/00 ,  C08F210/02 ,  C08F212/02 ,  C08F212/04 ,  C08F212/08

    CPC分类号： C08F212/04 ,  C08F210/00 ,  C08F212/02 ,  C08F210/02 ,  Y10S526/943

    摘要： A novel styrene copolymer comprising a styrene repeating unit (a) represented by the general formula: ##STR1## (wherein R.sup.1 is a hydrogen atom or a hydrocarbon group having not more than 20 carbon atoms; n is an integer of 1 to 3 and when n is 2 or 3, R.sup.1 s may be the same or different) and olefin repeating unit (b) represented by the general formula: ##STR2## (wherein R.sup.2 is a hydrogen atom or a saturated hydrocarbon group having not more than 20 carbon atoms) or diene repeating unit, which contains 0.1 to 99.9 wt. % of said olefin repeating unit (b) or diene repeating unit (c) wherein intrinsic viscosity measured in 1,2,4-trichlorobenzene at 135.degree. C. is 0.07 to 20 dl/g and the stereoregularity of the styrene repeating unit chain is a high degree of syndiotactic configuration. This styrene copolymer is excellent in heat resistance and chemical resistance, and further it can be injection molded at low temperature, and has good compatibility with other resine and the like.

    摘要翻译： PCT No.PCT / JP90 / 00342 Sec。 371 1990年10月5日第 102（e）1990年10月5日PCT PCT 1990年3月15日PCT公布。 公开号WO90 / 11305 日期：1990年10月4日。一种包含由以下通式表示的苯乙烯重复单元（a）的新型苯乙烯共聚物：其中R 1为氢原子或碳原子数不超过20的烃基; n为 1至3的整数，当n为2或3时，R 1可以相同或不同）和由以下通式表示的烯烃重复单元（b）：其中R 2为氢原子或饱和烃基， 不超过20个碳原子）或二烯重复单元，其含有0.1至99.9重量％ ％的所述烯烃重复单元（b）或二烯重复单元（c），其中在1,2,4-三氯苯中在135℃下测得的特性粘度为0.07-20dl / g，苯乙烯重复单元链的立构规整度为 高程度的间同构型。 该苯乙烯共聚物的耐热性和耐化学性优异，并且还可以在低温下注塑，并且与其它树脂等具有良好的相容性。