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45 条记录 (耗时 0.025 秒)

    Process for the production of block copolymer of propylene
    2.
    发明授权
    Process for the production of block copolymer of propylene 失效
    生产丙烯嵌段共聚物的方法

    公开(公告)号：US4772661A

    公开(公告)日：1988-09-20

    申请号：US934801

    申请日：1986-11-25

    申请人： Tadashi Asanuma ,  Mitsuru Ito ,  Kaneo Ito ,  Shigeru Kimura ,  Nobutaka Uchikawa ,  Ichiro Fujio

    发明人： Tadashi Asanuma ,  Mitsuru Ito ,  Kaneo Ito ,  Shigeru Kimura ,  Nobutaka Uchikawa ,  Ichiro Fujio

    IPC分类号： B23Q39/02 ,  C08F2/00 ,  C08F297/08

    CPC分类号： C08F297/083

    摘要： A block copolymer of propylene is produced by using propylene itself as a liquid medium, conducting continuous polymerization (former-stage polymerization) of propylene alone or propylene and a small amount of ethylene at first and then conducting batchwise copolymerization (latter-stage polymerization) of ethylene and propylene. The amount of an activity improver to be added to a polymerization tank for the latter-stage polymerization and/or the polymerization time of the latter-stage polymerization are controlled in accordance with the amount of a slurry transferred from a polymerization tank for the former-stage polymerization to the polymerization tank for the latter-stage polymerization so as to maintain the ratio of the amount of the polymer polymerized by the former-stage polymerization to the amount of the polymer polymerized by the latter-stage polymerization constant in the block copolymer.

    摘要翻译： 丙烯的嵌段共聚物通过使用丙烯本身作为液体介质，首先进行单独的丙烯或丙烯的连续聚合（前段聚合）和少量乙烯，然后进行分批共聚（后期聚合） 乙烯和丙烯。 添加到用于后期聚合的聚合槽中的活性改进剂的量和/或后期聚合的聚合时间的量根据从前者聚合的聚合槽转移的浆料的量来控制， 进行后段聚合的聚合槽进行聚合，以保持前段聚合所聚合的聚合物的量与通过嵌段共聚物中的后期聚合常数聚合的聚合物的量的比例。

    Molded articles of syndiotactic polypropylene and method for preparing same
    3.
    发明授权
    Molded articles of syndiotactic polypropylene and method for preparing same 失效
    间同立构聚丙烯的成型制品及其制备方法

    公开(公告)号：US5591817A

    公开(公告)日：1997-01-07

    申请号：US210082

    申请日：1994-03-18

    申请人： Tadashi Asanuma ,  Tateyo Sasaki ,  Mitsuru Ito ,  Tetusnosuke Shiomura

    发明人： Tadashi Asanuma ,  Tateyo Sasaki ,  Mitsuru Ito ,  Tetusnosuke Shiomura

    IPC分类号： C08J5/00 ,  B29C35/00 ,  B29C67/24 ,  B29C71/02 ,  B29K23/00 ,  B29K105/32 ,  C08F4/642 ,  C08F110/06 ,  C08F10/06

    CPC分类号： B29C67/24 ,  B29K2023/12 ,  B29K2995/0026 ,  C08F110/06 ,  Y10T428/26

    摘要： A molded article of a syndiotactic polypropylene having excellent transparency in which a melting point attributed to the polypropylene having the syndiotactic structure measured at a heating rate of 10.degree. C./minute by differential scanning thermal analysis is represented by a substantially single peak, the aforesaid molded article being prepared by heating, melting and then hot-molding a homopolymer of propylene or a copolymer of propylene and a small amount of another olefin, which have a substantially syndiotactic structure, or a mixture of the homopolymer or the copolymer and a small amount of a polypropylene having a substantially isotactic structure, followed by quenching, or, after these steps, additionally subjecting the above molded article to a heat treatment at a temperature of less than its melting point. A method for preparing the above molded article is also disclosed here.

    摘要翻译： 间隔立构聚丙烯的模塑制品具有优异的透明性，其中通过差示扫描热分析以10℃/分钟的加热速率测量的具有间同立构结构的聚丙烯的熔点由基本上单峰表示，上述 通过将具有基本上间同立构结构的丙烯或丙烯与少量的另一种烯烃的共聚物或均聚物或共聚物的混合物和少量的均聚物进行加热，熔融，然后热模塑， 的具有基本上全同立构结构的聚丙烯，然后淬火，或者在这些步骤之后，另外对上述模塑制品在低于其熔点的温度进行热处理。 此处也公开了制备上述模制品的方法。

    Method for molding syndiotactic polypropylene and molded article
    6.
    发明授权
    Method for molding syndiotactic polypropylene and molded article 失效
    间同立构聚丙烯和模塑制品的成型方法

    公开(公告)号：US5260395A

    公开(公告)日：1993-11-09

    申请号：US928062

    申请日：1992-08-11

    申请人： Tadashi Asanuma ,  Tateyo Sasaki ,  Mitsuru Ito ,  Shigeru Kimura ,  Takeo Inoue

    发明人： Tadashi Asanuma ,  Tateyo Sasaki ,  Mitsuru Ito ,  Shigeru Kimura ,  Takeo Inoue

    IPC分类号： C08J5/18 ,  C08J7/02 ,  C08L23/10 ,  D01F6/06 ,  C08F10/06 ,  C08F110/06 ,  C08F210/06

    CPC分类号： D01F6/06 ,  C08J5/18 ,  C08J7/02 ,  C08L23/12 ,  C08J2323/10 ,  C08L2203/12 ,  C08L2205/02 ,  C08L2205/025 ,  C08L2207/12 ,  C08L23/142

    摘要： A method for molding a polypropylene or a propylene copolymer having a syndiotactic structure which comprises the steps of melting, molding, if desired, quenching and then stretching a propylene homopolymer or a copolymer of propylene and a small amount of ethylene or another .alpha.-olefin which has a substantially syndiotactic structure, or a mixture of the same and a small amount of a polypropylene having a substantially isotactic structure. The molded and stretched article can be heated at a temperature of a molding temperature or more, while a load is applied to the article. Furthermore, the molded and stretched article, if desired, can be treated with a hydrocarbon vapor, while a load is applied to the article. The molded article obtained by the method of the present invention has a novel crystalline structure.

    摘要翻译： 用于模制具有间同立构结构的聚丙烯或丙烯共聚物的方法包括以下步骤：熔融，模塑，如果需要，淬火然后拉伸丙烯均聚物或丙烯与少量乙烯或另一种α-烯烃的共聚物 具有基本间同立构结构，或相同和少量具有基本上全同立构结构的聚丙烯的混合物。 模制和拉伸的制品可以在成型温度或更高的温度下加热，同时将负载施加到制品上。 此外，如果需要，模制和拉伸的制品可以用烃蒸气处理，同时将负载施加到制品上。 通过本发明的方法获得的模制品具有新颖的晶体结构。

    Method for preparing molded articles of syndiotactic polypropylene
    8.
    发明授权
    Method for preparing molded articles of syndiotactic polypropylene 失效
    间规聚丙烯的制备方法

    公开(公告)号：US5759469A

    公开(公告)日：1998-06-02

    申请号：US719514

    申请日：1996-09-25

    申请人： Tadashi Asanuma ,  Tateyo Sasaki ,  Mitsuru Ito ,  Tetusnosuke Shiomura

    发明人： Tadashi Asanuma ,  Tateyo Sasaki ,  Mitsuru Ito ,  Tetusnosuke Shiomura

    IPC分类号： C08J5/00 ,  B29C35/00 ,  B29C67/24 ,  B29C71/02 ,  B29K23/00 ,  B29K105/32 ,  C08F4/642 ,  C08F110/06 ,  C08F10/06 ,  B29C71/00 ,  B29D7/01

    CPC分类号： B29C67/24 ,  B29K2023/12 ,  B29K2995/0026 ,  C08F110/06 ,  Y10T428/26

    摘要： A molded article of a syndiotactic polypropylene having excellent transparency in which a melting point attributed to the polypropylene having the syndiotactic structure measured at a heating rate of 10.degree. C./minute by differential scanning thermal analysis is represented by a substantially single peak, the aforesaid molded article being prepared by heating, melting and then hot-molding a homopolymer of propylene or a copolymer of propylene and a small amount of another olefin, which have a substantially syndiotactic structure, or a mixture of the homopolymer or the copolymer and a small amount of a polypropylene having a substantially isotactic structure, followed by quenching, or, after these steps, additionally subjecting the above molded article to a heat treatment at a temperature of less than its melting point. A method for preparing the above molded article is also disclosed here.

    摘要翻译： 间隔立构聚丙烯的模塑制品具有优异的透明性，其中通过差示扫描热分析以10℃/分钟的加热速率测量的具有间同立构结构的聚丙烯的熔点由基本上单峰表示，上述 通过将具有基本上间同立构结构的丙烯或丙烯与少量的另一种烯烃的共聚物或均聚物或共聚物的混合物和少量的均聚物进行加热，熔融，然后热模塑， 的具有基本上全同立构结构的聚丙烯，然后淬火，或者在这些步骤之后，另外对上述模塑制品在低于其熔点的温度进行热处理。 此处也公开了制备上述模制品的方法。

    Method for preparing block copolymers of propylene
    9.
    发明授权
    Method for preparing block copolymers of propylene 失效
    制备丙烯嵌段共聚物的方法

    公开(公告)号：US5175208A

    公开(公告)日：1992-12-29

    申请号：US377268

    申请日：1989-07-10

    申请人： Tadashi Asanuma ,  Mitsuru Ito ,  Tutomu Iwatani ,  Kaoru Kawanishi ,  Nobutaka Uchikawa ,  Shigeru Kimura ,  Ryuichi Sugimoto

    发明人： Tadashi Asanuma ,  Mitsuru Ito ,  Tutomu Iwatani ,  Kaoru Kawanishi ,  Nobutaka Uchikawa ,  Shigeru Kimura ,  Ryuichi Sugimoto

    IPC分类号： C08F297/08

    CPC分类号： C08F297/083

    摘要： An improved method for preparing block copolymers of propylene which comprises providing a polymerizer composed of at least two reaction vessels connected to one another, substantially homopolymerizing propylene in a first step and then copolymerizing ethylene and propylene in a second step in the presence of a stereoregular catalyst, characterized by carrying out the homopolymerization of propylene in the polymerizer composed of at least two reaction vessels connected to one another in series, then introducing the resulting polymer slurry into a countercurrent washing column and countercurrently washing the slurry with propylene, introducing the washed slurry withdrawn from the lower part of the washing column into a reaction vessel in the second step connected to the washing column and performing the polymerization of ethylene and propylene, of which ratio ranges from 15/85 to 95/5. According to this method, a block copolymer of propylene exhibiting excellent physical properties can be obtained efficiently.

    Optical pickup lens
    10.
    发明授权
    Optical pickup lens 失效
    光学拾音镜头

    公开(公告)号：US08427926B2

    公开(公告)日：2013-04-23

    申请号：US13585431

    申请日：2012-08-14

    申请人： Mitsuru Ito

    发明人： Mitsuru Ito

    IPC分类号： G11B7/00

    CPC分类号： G02B3/04 ,  G11B7/1374 ,  G11B7/13922

    摘要： An optical pickup lens for focusing a light beam from a laser light source on an optical information recording medium is a single lens. The optical pickup lens has two surfaces, and a surface R2 opposite to a surface R1 closer to the laser light source has a continuous shape. When the surface R2 has radii h1, h2 and h3 (h1 Δsag1>Δsag2 and Δsag2

    摘要翻译： 用于将来自激光源的光束聚焦在光学信息记录介质上的光学拾取透镜是单个透镜。 光学拾取透镜具有两个表面，与靠近激光光源的表面R1相对的表面R2具有连续的形状。 当表面R2具有从光轴到透镜周边的半径h1，h2和h3（h1

    Deltasag1> Deltasag2和Deltasag2