利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

68 条记录 (耗时 0.017 秒)

    Polyimide composition
    31.
    发明授权
    Polyimide composition 失效
    聚酰亚胺组合物

    公开(公告)号：US5321096A

    公开(公告)日：1994-06-14

    申请号：US35043

    申请日：1993-03-22

    申请人： Yuichi Okawa ,  Nobuhito Koga ,  Hideaki Oikawa ,  Tadashi Asanuma ,  Akihiro Yamaguchi

    发明人： Yuichi Okawa ,  Nobuhito Koga ,  Hideaki Oikawa ,  Tadashi Asanuma ,  Akihiro Yamaguchi

    IPC分类号： C08G73/10 ,  C08L71/00 ,  C08L79/08 ,  C08L81/06 ,  C08F283/04 ,  C08G69/48

    CPC分类号： C08L71/00 ,  C08G73/101 ,  C08L79/08 ,  C08L81/06

    摘要： A thermoplastic resin composition comprise 99.9.about.50 parts by weight of one or more thermoplastic resin selected from the group consisting of aromatic polyimide, aromatic polyetherimide, aromatic polyamideimide, aromatic polyethersulfone and aromatic polyether ketone and 0.1.about.50 parts by weight of one or more liquid crystal type aromatic polyimide having recurring structural units represented by the formula (1): ##STR1## wherein R.sub.1 .about.R.sub.5 is a hydrogen atom, fluorine atom, trifluoromethyl, methyl, ethyl or cyano and may be the same or different, and R is a tetravalent radical having 6.about.27 carbon atoms and being selected from the group consisting of a monoaromatic radical, condensed polyaromatic radical and noncondensed aromatic radical connected each other with a direct bond or a bridge member.The present invention can provide thermoplastic resin compositions which have remarkably good processability and excellent thermal stability in addition to essentially excellent properties of each resin.

    摘要翻译： 热塑性树脂组合物包含99.9重量份的一种或多种选自芳族聚酰亚胺，芳族聚醚酰亚胺，芳族聚酰胺酰亚胺，芳族聚醚砜和芳族聚醚酮的热塑性树脂和0.1重量份的一种或多种液体 具有由式（1）表示的重复结构单元的结晶型芳族聚酰亚胺：（1）n原子，氟原子，三氟甲基，甲基，乙基或氰基，可以相同或不同，R是具有 6个碳原子，并且选自由直链或桥构件相互连接的单芳族基团，缩合多芳族基团和非缩合芳族基团组成的组。 本发明可以提供具有非常好的加工性和优异的热稳定性的热塑性树脂组合物，除了每种树脂的基本上优异的性能。

    Process for the production of block copolymer of propylene and ethylene
    34.
    发明授权
    Process for the production of block copolymer of propylene and ethylene 失效
    制备丙烯和乙烯的嵌段共聚物的方法

    公开(公告)号：US4921905A

    公开(公告)日：1990-05-01

    申请号：US205484

    申请日：1988-06-01

    申请人： Ichiro Fujio ,  Kaneo Ito ,  Tadashi Asanuma

    发明人： Ichiro Fujio ,  Kaneo Ito ,  Tadashi Asanuma

    IPC分类号： C08F293/00 ,  B01J19/18 ,  C08F2/00 ,  C08F2/01 ,  C08F297/08

    CPC分类号： B01J19/1862 ,  C08F297/083 ,  B01J2208/00539 ,  B01J2208/00548 ,  B01J2219/00162 ,  B01J2219/00164

    摘要： A block copolymer of propylene can be obtained with its quality controlled uniform by conducting at first continuous polymerization of propylene in a polymerization system, receiving a polymer slurry, which has been discharged continuously from the polymerization system, in a batchwise polymerization tank, feeding ethylene to the tank to conduct batchwise polymerization of ethylene and propylene. Upon discharge of a copolymer slurry formed by the preceding batchwise polymerization, at least a predetermined amount of unreacted ethylene is left over in the tank. Into the tank with the unreacted ethylene still left over therein, there are simultaneously charged the polymer slurry from the polymerization system and a deactivator. During this charging, ethylene is not supplied. The charging rate of the deactivator is controlled in such a way that the partial pressure of ethylene in the vapor phase of the tank always reaches a predetermined value at the time point of completion of reception of the polymer slurry therein.

    摘要翻译： 丙烯的嵌段共聚物可以通过在聚合体系中首先连续聚合丙烯而进行质量控制的均匀化，接受在间歇式聚合槽中连续从聚合体系中排出的聚合物浆料，将乙烯加入到 该罐进行乙烯和丙烯的分批聚合。 在排出通过前述分批聚合形成的共聚物浆料时，至少预定量的未反应的乙烯留在罐中。 在未反应的乙烯仍然残留在罐中的同时，从聚合体系中同时加入聚合物淤浆和失活剂。 在充电期间，不提供乙烯。 以这样的方式控制失活剂的充电速率，使得在其中的聚合物浆料的接收完成时，罐的气相中的乙烯分压总是达到预定值。

    Process of making polyprophylene fibers
    36.
    发明授权
    Process of making polyprophylene fibers 失效
    制造聚丙烯纤维的工艺

    公开(公告)号：US5624621A

    公开(公告)日：1997-04-29

    申请号：US518816

    申请日：1995-08-24

    申请人： Tadashi Asanuma ,  Tetsunosuke Shiomura ,  Shigeru Kimura ,  Nobutaka Uchikawa ,  Yoichi Kawai ,  Keigo Suehiro ,  Satoshi Fukushima

    发明人： Tadashi Asanuma ,  Tetsunosuke Shiomura ,  Shigeru Kimura ,  Nobutaka Uchikawa ,  Yoichi Kawai ,  Keigo Suehiro ,  Satoshi Fukushima

    IPC分类号： D01F6/06 ,  D01D5/12

    CPC分类号： D01F6/06 ,  Y10T428/2913 ,  Y10T428/2929 ,  Y10T428/2931

    摘要： A fiber excellent in strength and having an average size of 10,000-0.1 denier can be obtained by extruding a new material composed mainly of a polypropylene having a syndiotactic pentad fraction of 0.7 or more and optionally stretching the resulting extruded material. By using as the raw material a composition consisting of two kinds of polypropylenes each having an intrinsic viscosity .eta..sub.1 or .eta..sub.2, the log(.eta..sub.2 /.eta..sub.1) being more than 0.05 or less than -0.05, and a syndiotactic pentad traction of 0.7 or more at a weight ratio of 95:5-5:95 or a composition consisting of at least 50 parts by weight of a syndiotactic polypropylene having the intrinsic viscosity .eta..sub.1 and a syndiotactic pentad fraction of 0.7 or above and at most 50 parts by weight of an isotactic polypropylene having the intrinsic viscosity .eta..sub.2, the extrudability is improved and the fiber stretching conditions are broadened.

    摘要翻译： 通过挤出主要由间同立构五单元组分为0.7以上的聚丙烯组成的新材料，并任选地拉伸所得的挤出材料，可以获得强度优异且平均尺寸为10,000-0.1旦尼尔的纤维。 通过使用由具有特性粘度eta 1或eta 2的两种聚丙烯组成的组合物，log（eta 2 / eta 1）大于0.05或小于-0.05，间同立构五单元牵引力 0.7重量％以上，重量比为95:5.5:95的组合物或由至少50重量份的特性粘度η1和间同立构五单元组分数为0.7以上至多50份的间同立构聚丙烯组成的组合物 的特性粘度等于2的全同立构聚丙烯，可挤出性提高，纤维拉伸条件变宽。

    .alpha.-olefin-alkenylsilane copolymer and method for preparing same
    38.
    发明授权
    .alpha.-olefin-alkenylsilane copolymer and method for preparing same 失效
    α-烯烃 - 烯基硅烷共聚物及其制备方法

    公开(公告)号：US5334684A

    公开(公告)日：1994-08-02

    申请号：US894475

    申请日：1992-06-05

    申请人： Tadashi Asanuma ,  Kaoru Kawanishi

    发明人： Tadashi Asanuma ,  Kaoru Kawanishi

    IPC分类号： C08F210/00 ,  C08F4/60 ,  C08F4/642 ,  C08F4/6592 ,  C08F30/08 ,  C08F210/04 ,  C08F210/06 ,  C08F210/08 ,  C08F210/14 ,  C08F230/08

    CPC分类号： C08F230/08 ,  C08F210/04 ,  C08F210/06 ,  C08F210/08 ,  C08F210/14 ,  Y10S526/943

    摘要： An .alpha.-olefin-alkenylsilane copolymer having steric regularity in which the side chains in the .alpha.-olefin unit substantially have the steric regularity, the content of alkenylsilane units is from 0.01 to 50% by weight, and the intrinsic viscosity measured in a tetralin solution at 135.degree. C. is 0.01 or higher. A method for preparing the above copolymer comprises the step of copolymerizing an .alpha.-olefin having 3 to 25 carbon atoms with an alkenylsilane in the presence of a catalyst comprising an aluminoxane and a transition metal compound containing a cyclopentadiene group or its derivative as a ligand.

    摘要翻译： 具有空间规则性的α-烯烃 - 烯基硅烷共聚物，其中α-烯烃单元中的侧链基本上具有立体规则性，烯基硅烷单元的含量为0.01至50重量％，并且在四氢化萘溶液中测量的特性粘度 在135℃下为0.01以上。 制备上述共聚物的方法包括在包含铝氧烷和含有环戊二烯基或其衍生物作为配体的过渡金属化合物的催化剂存在下，使具有3至25个碳原子的α-烯烃与烯基硅烷共聚的步骤。