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15 条记录 (耗时 0.03 秒)

    Process for the production of cycloolefin-based random copolymer
    1.
    发明授权
    Process for the production of cycloolefin-based random copolymer 失效
    制备环烯烃基无规共聚物的方法

    公开(公告)号：US5142007A

    公开(公告)日：1992-08-25

    申请号：US735116

    申请日：1991-07-24

    申请人： Toshihiro Sagane ,  Toshiaki Kuroiwa ,  Shuji Minami

    发明人： Toshihiro Sagane ,  Toshiaki Kuroiwa ,  Shuji Minami

    IPC分类号： C08F2/06 ,  C08F4/60 ,  C08F4/68 ,  C08F32/00 ,  C08F36/00 ,  C08F210/00 ,  C08F210/02 ,  C08F232/00 ,  C08F232/02 ,  C08F232/08 ,  C08F236/20

    CPC分类号： C08F232/08 ,  C08F210/02 ,  Y10S526/903

    摘要： A process for the production of a cycloolefin-based random copolymer, which comprises:(A) copolymerizing (a) ethylene and (b) at least one cycloolefin,(B) in the presence of a catalyst comprising a vanadium compound soluble in a mixed solvent described below and an organoaluminum compound.(C) in a mixed solvent comprising (a) a hydrocarbon-based solvent having a solubility parameter (.delta. value) of not less than 7.7 (cal/cm.sup.3).sup.1/2 and (b) a hydrocarbon-based solvent having a solubility parameter (.delta. value) of not more than 7.5 (cal/cm.sup.3).sup.1/2, the mixed solvent having a volume ratio (a)/(b) of 90/10 to 50/50. The said process permits the production of a copolymer in a higher concentration when copolymers having an identical molecular weight to that of conventional copolymers are produced, and permits the production of a copolymer having a higher molecular weight when copolymers are produced in an identical concentration to that of conventional copolymers.

    摘要翻译： 一种制备环烯烃基无规共聚物的方法，其包括：（A）在（a）乙烯和（b）至少一种环烯烃下共聚合（B）），在（B）催化剂存在下，将可溶于混合物 溶剂和有机铝化合物。 （C）在包含（a）溶解度参数（δ值）不小于7.7（cal / cm 3）1/2的烃类溶剂和（b）具有溶解度参数的烃基溶剂的混合溶剂中 （δ值）不超过7.5（cal / cm 3）1/2，混合溶剂的体积比（a）/（b）为90/10〜50/50。 当制备具有与常规共聚物相同的分子量的共聚物时，所述方法允许以更高的浓度制备共聚物，并且当以与该共聚物相同的浓度制备共聚物时，允许制备具有较高分子量的共聚物 的常规共聚物。

    Recording and/or reproducing apparatus for disc-shaped recording medium
    5.
    发明授权
    Recording and/or reproducing apparatus for disc-shaped recording medium 失效
    用于盘形记录介质的记录和/或再现装置

    公开(公告)号：US5644558A

    公开(公告)日：1997-07-01

    申请号：US608659

    申请日：1996-05-10

    申请人： Akihisa Inatani ,  Shuichi Nagano ,  Kanji Mita ,  Shuji Minami ,  Haruyuki Tamura ,  Tsutomu Watanabe ,  Akira Katsuyama ,  Masami Ishikawa ,  Taiji Noshitani

    发明人： Akihisa Inatani ,  Shuichi Nagano ,  Kanji Mita ,  Shuji Minami ,  Haruyuki Tamura ,  Tsutomu Watanabe ,  Akira Katsuyama ,  Masami Ishikawa ,  Taiji Noshitani

    IPC分类号： G11B17/22 ,  G11B27/00 ,  G11B27/10 ,  G11B27/11 ,  G11B27/34

    CPC分类号： G11B17/22 ,  G11B27/002 ,  G11B27/105 ,  G11B27/11 ,  G11B27/34 ,  G11B2220/20 ,  G11B2220/2525 ,  G11B2220/65

    摘要： A recording and/or reproducing apparatus for discs including a housing unit housing a large number of discs, a recording and/or reproducing unit on which one of the discs held within a large number of disc holders provided in the housing unit is selectively loaded and a transporting mechanism for transporting the disc held within a pre-set one of the holders of the housing unit to the recording and/or reproducing unit. In the course of transporting the disc, the disc transporting mechanism detects whether or not the disc is held in the holder. The housing unit include a plurality of the holders for radially holding the discs with the disc surfaces being erected upright. The disc held in the holder is transported by the transporting mechanism in the upstanding position as far as the disc reproducing unit and there loaded. The recording and/or reproducing apparatus for disc-shaped recording media has a group designating unit for designating the information of a desired one of the recording media housed within the housing unit and the air information recorded on such desired disc-shaped recording medium and grouping the designated information for classing the large number of the recording media into several groups.

    摘要翻译： 用于盘的记录和/或再现装置，包括容纳大量盘的壳体单元，记录和/或再现单元，其中保持在设置在壳体单元中的大量盘保持器中的盘之一被选择性地加载在其上; 传送机构，用于将保持在壳体单元的预定一个保持器内的盘传送到记录和/或再现单元。 在运送盘的过程中，盘传送机构检测盘是否保持在保持器中。 壳体单元包括用于径向保持盘的多个保持器，其中盘表面直立。 保持在保持架中的盘通过传送机构在直立位置被传送到盘重放单元并在那里被装载。 用于盘形记录介质的记录和/或再现装置具有组指定单元，用于指定容纳在容纳单元内的所需记录介质的信息和记录在所需的盘形记录介质上的空气信息和分组 将大量记录媒体分类为数组的指定信息。

    Solid titanium catalyst component, ethylene polymerization catalyst containing the same, and ethylene polymerization process
    9.
    发明授权
    Solid titanium catalyst component, ethylene polymerization catalyst containing the same, and ethylene polymerization process 有权
    固体钛催化剂组分，乙烯聚合催化剂含有相同的乙烯聚合方法

    公开(公告)号：US06806222B2

    公开(公告)日：2004-10-19

    申请号：US10025548

    申请日：2001-12-26

    申请人： Tsuneo Yashiki ,  Shuji Minami

    发明人： Tsuneo Yashiki ,  Shuji Minami

    IPC分类号： C08F6602

    CPC分类号： C08F10/00 ,  C08F4/6565

    摘要： Disclosed is a solid titanium catalyst component which is obtained by a process comprising the steps of bringing (a) a liquid magnesium compound into contact with (b) a liquid titanium compound in the presence of (c) an organosilicon compound having no active hydrogen in an amount of 0.25 to 0.35 mol based on 1 mol of the magnesium compound (a), elevating the temperature of the resulting contact product to a temperature of 105 to 115° C. and maintaining the contact product at this temperature. The contact product may be further brought into contact with not more than 0.5 mol of the organosilicon compound having no active hydrogen (c). Also disclosed are an ethylene polymerization catalyst formed from the solid titanium catalyst component and an organometallic compound and an ethylene polymerization process using the catalyst. By the use of the solid titanium catalyst component, ethylene can be polymerized with high activities and an ethylene polymer having excellent particle properties can be prepared.

    摘要翻译： 公开了一种固体钛催化剂组分，其通过包括以下步骤的方法获得：（a）液体镁化合物与（b）液态钛化合物在（c）无活性氢的有机硅化合物存在下接触的步骤 相对于1摩尔镁化合物（a）为0.25〜0.35摩尔，将所得接触产物的温度升高至105〜115℃，并将该接触产物保持在该温度。 接触产物可以进一步与不超过0.5mol的没有活性氢的有机硅化合物（c）接触。 还公开了由固体钛催化剂组分和有机金属化合物形成的乙烯聚合催化剂和使用该催化剂的乙烯聚合方法。 通过使用固体钛催化剂组分，乙烯可以以高活性聚合，并且可以制备具有优异颗粒性能的乙烯聚合物。