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11 条记录 (耗时 0.019 秒)

    Process for preparation of olefin polymers
    1.
    发明授权
    Process for preparation of olefin polymers 失效
    制备烯烃聚合物的方法

    公开(公告)号：US5137995A

    公开(公告)日：1992-08-11

    申请号：US711706

    申请日：1991-06-07

    申请人： Masuzo Yokoyama ,  Kouichi Katou ,  Toshihiko Sugano

    发明人： Masuzo Yokoyama ,  Kouichi Katou ,  Toshihiko Sugano

    IPC分类号： C08F4/64 ,  C08F4/00 ,  C08F4/60 ,  C08F4/658 ,  C08F10/00

    CPC分类号： C08F10/00

    摘要： A process for the preparation of olefin polymers, which comprises polymerizing an olefin in the presence of a catalyst which comprises: (A) a solid catalyst component obtained by contacting a magnesium dihalide such as MgCl.sub.2 with a titanium tetra-alkoxide such as Ti(O-nBu).sub.4 and then with a polymeric silicon compound having a structure represented by the formula ##STR1## wherein R stands for a hydrocarbon residue such as CH.sub.3, and contacting the obtained solid component with a halogen compound of silicon such as SiCl.sub.4 or with a halogen compound of silicon such as SiCl.sub.4 and a halogen compound of titanium such as TiCl.sub.4, (B) an organoaluminum compound such as Al(Et).sub.3 ; and (C) an organic silicon compound having an Si--O--C linkage such as PhSi(OEt).sub.3. According to this process, a polymer having a high stereoregularity, a narrow particle size distribution and a high bulk density can be obtained in a high yield with a high efficiency.

    摘要翻译： 一种制备烯烃聚合物的方法，其包括在催化剂存在下使烯烃聚合，所述催化剂包括：（A）通过使二氯化镁如MgCl 2与四烷氧基钛如Ti（O）接触而获得的固体催化剂组分 -nBu）4，然后与具有由式“IMAGE”表示的结构的聚合物硅化合物反应，其中R代表烃残基例如CH 3，并使得到的固体组分与硅的卤素化合物如SiCl 4或与 诸如SiCl 4的硅卤素化合物和钛的卤素化合物如TiCl 4，（B）有机铝化合物如Al（Et）3; 和（C）具有Si-O-C键的有机硅化合物如PhSi（OEt）3。 根据该方法，可以高效率地获得具有高立构规整性，窄粒度分布和高堆积密度的聚合物。

    Catalyst component for .alpha.-olefin polymerization and method of producing the same
    2.
    发明授权
    Catalyst component for .alpha.-olefin polymerization and method of producing the same 失效
    用于α-烯烃聚合的催化剂组分及其制备方法

    公开(公告)号：US4563436A

    公开(公告)日：1986-01-07

    申请号：US681209

    申请日：1984-12-13

    申请人： Masuzo Yokoyama ,  Toshihiko Sugano

    发明人： Masuzo Yokoyama ,  Toshihiko Sugano

    IPC分类号： C08F4/00 ,  C08F4/60 ,  C08F4/64 ,  C08F4/654 ,  C08F10/00

    CPC分类号： C08F10/00

    摘要： A catalyst component for polymerization of .alpha.-olefins is produced by causing mutual contact of:(A) a magnesium halide containing solid;(B) an electron donating compound, having the structural site as represented by the formula show below in its molecule: ##STR1## and (C) a titanium halide. The catalyst thus produced has high polymerization activity and is capable of producing polymers having excellent stereoregularity.

    摘要翻译： 用于α-烯烃聚合的催化剂组分是通过使（A）含卤化镁固体的相互接触而产生的; （B）具有如下式所示的结构位点的给电子化合物：其分子中：＆lt; IMAGE＆gt;和（C）卤化钛。 由此制备的催化剂具有高聚合活性，并且能够制备具有优异立构规整性的聚合物。

    Process for producing aromatic polycarbonate
    3.
    发明授权
    Process for producing aromatic polycarbonate 失效
    制备芳香族聚碳酸酯的方法

    公开(公告)号：US5578694A

    公开(公告)日：1996-11-26

    申请号：US526548

    申请日：1995-09-12

    申请人： Masuzo Yokoyama ,  Junji Takano ,  Masami Hasegawa ,  Yukiko Tatsukawa

    发明人： Masuzo Yokoyama ,  Junji Takano ,  Masami Hasegawa ,  Yukiko Tatsukawa

    IPC分类号： C08G64/30 ,  C08G64/04 ,  C07C68/06

    CPC分类号： C08G64/307 ,  C08G64/30

    摘要： A process for producing an aromatic polycarbonate is described, which comprises melt-polycondensing an aromatic diol compound with a diaryl carbonate compound in the presence of an interesterification catalyst, said interesterification catalyst comprising a quaternary phosphonium salt compound represented by formula (II): ##STR1## wherein R.sup.3, R.sup.4, R.sup.5, and R.sup.6 each independently represent an alkyl group having 1 to 12 carbon atoms, an aryl group, an aralkyl group, or a cycloalkyl group, and X.sup.l- is an anion selected from the group consisting of a carbonate ion, a phosphate ion, and a tetrahydroxyboron ion, with the letter l indicating the valency of X.

    摘要翻译： 描述了一种制备芳族聚碳酸酯的方法，其包括在酯交换催化剂存在下使芳族二醇化合物与二芳基碳酸酯化合物熔融缩聚，所述酯交换催化剂包含由式（II）表示的季鏻盐化合物：

    Process for producing aromatic polycarbonate
    8.
    发明授权
    Process for producing aromatic polycarbonate 失效
    制备芳香族聚碳酸酯的方法

    公开(公告)号：US5527875A

    公开(公告)日：1996-06-18

    申请号：US386268

    申请日：1995-02-09

    申请人： Masuzo Yokoyama ,  Fumio Keitoku ,  Junji Takano ,  Masami Hasegawa ,  Yukiko Tatsukawa

    发明人： Masuzo Yokoyama ,  Fumio Keitoku ,  Junji Takano ,  Masami Hasegawa ,  Yukiko Tatsukawa

    IPC分类号： C08G64/20 ,  C08G64/30 ,  C08G64/00

    CPC分类号： C08G64/307

    摘要： A process for producing an aromatic polycarbonate having a weight average molecular weight of from 7,000 to 60,000 is disclosed, comprising melt polycondensing an aromatic diol compound (e.g., bisphenol A) and a diaryl carbonate compound (e.g., diphenyl carbonate) in the presence of a combination of (a) an alkali metal compound and (b) a phosphonium hydroxide compound (e.g., tetraethylphosphonium hydroxide) as an interesterification catalyst. The aromatic polycarbonate has improved heat resistance and hue.

    摘要翻译： 公开了一种重均分子量为7,000至60,000的芳族聚碳酸酯的制备方法，其包括将芳族二醇化合物（例如双酚A）和碳酸二芳基酯化合物（例如碳酸二苯酯）熔融缩聚在 （a）碱金属化合物和（b）氢氧化鏻化合物（例如氢氧化四乙基鏻）作为酯交换催化剂的组合。 芳族聚碳酸酯具有改善的耐热性和色调。

    Process for preparing titanium trichloride compositions
    9.
    发明授权
    Process for preparing titanium trichloride compositions 失效
    制备三氯化钛组合物的方法

    公开(公告)号：US4151111A

    公开(公告)日：1979-04-24

    申请号：US787969

    申请日：1977-04-15

    申请人： Masuzo Yokoyama ,  Akira Yamada ,  Siyouzo Okosi ,  Tokuo Katou ,  Shinichi Yoshida

    发明人： Masuzo Yokoyama ,  Akira Yamada ,  Siyouzo Okosi ,  Tokuo Katou ,  Shinichi Yoshida

    IPC分类号： C08F4/00 ,  C01G23/02 ,  C08F4/60 ,  C08F4/64 ,  C08F10/00

    CPC分类号： C08F10/00

    摘要： A process for preparing a titanium trichloride composition comprises the steps of:(1) reducing titanium tetrachloride with oaganoaluminum compounds to produce a titanium trichloride composition having a .beta.-crystal structure;(2) heat treating the resulting titanium trichloride having a .beta.-crystal structure and subsequently pulverizing the heat-treated titanium trichloride in the presence or absence of titanium tetrachloride to produce a titanium trichloride composition containing substantially no titanium trichloride having a .beta.-crystal structure;(3) treating the pulverized titanium trichloride composition with a complexing agent; and(4) treating the resulting titanium trichloride composition with a compound selected from the group consisting of metal halide compounds having Lewis acidity and interhalogen compounds.

    摘要翻译： 制备三氯化钛组合物的方法包括以下步骤：