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45 条记录 (耗时 0.018 秒)

    Alpha-olefin block copolymer particles and process for the production thereof
    21.
    发明公开
    Alpha-olefin block copolymer particles and process for the production thereof 失效
    阿尔法 - Olefinblockpolymere的颗粒和它们的制备方法。

    公开(公告)号：EP0202946A2

    公开(公告)日：1986-11-26

    申请号：EP86303915.2

    申请日：1986-05-22

    申请人： SUMITOMO CHEMICAL COMPANY, LIMITED

    发明人： Shiga, Akinobu ,  Kakugo, Masahiro ,  Sadatoshi, Hajime ,  Kora, Hiroyuki ,  Sasaki, Toshio ,  Kojima, Junpei ,  Wakamatsu, Kazuki ,  Kawamata, Syozo

    IPC分类号： C08F297/08

    CPC分类号： C08F297/083

    摘要： A process for the production of a-olefin block copolymer particles which comprises

    (1) homopolymerizing propylene or copolymerising propylene with ethylene or an a-olefin having 4 to 6 carbon atoms in liquified propylene or in the gaseous phase, the resultant polymer containing not more than 6 mole % of ethylene or said a-olefin,
    (2) further reacting the polymer produced in step (1) by homopolymerizing ethylene or copolymerizing ethylene and propylene and optionally an a-olefin having 4 to 6 carbon atoms so that the ethylene content in the polymer produced in this step is not less than 10 mole % and that the polymer produced in this step amounts to 10 to 70 % by weight based on the weight of the whole polymer, said polymerization in steps (1) and (2) being carried out in the presence of a catalyst system comprising

    (A) a solid catalyst component containing at least titanium, chlorine and an electron-donating compund and having a pore volume in respect of pores having a radius of 200 to 15,000 A of not less than 0.08 cc/g, a mean particle size of 5 to 100 µm, and a geometric standard deviation (ag) of the particle size distribution of not more than 2, and
    (B) an organic aluminum compound.

    Polypropylene resin composition for oriented film and oriented film of the composition
    24.
    发明公开
    Polypropylene resin composition for oriented film and oriented film of the composition 失效
    Polypropylen Zusammensetzungfürorientierte Filme und daraus hergestellte orientierte Filme

    公开(公告)号：EP0718360A1

    公开(公告)日：1996-06-26

    申请号：EP95309328.3

    申请日：1995-12-21

    申请人： SUMITOMO CHEMICAL COMPANY, LIMITED

    发明人： Ebara, Takeshi ,  Tanimura, Hiroyuki ,  Sadatoshi, Hajime ,  Yamazaki, Kazuhiro ,  Yamada, Taiji ,  Hashimoto, Tuyoshi

    IPC分类号： C08L23/02 ,  C08J5/18

    CPC分类号： C08J5/18 ,  C08J2323/10 ,  C08L23/12 ,  C08L25/14 ,  C08L2201/04 ,  C08L2205/22 ,  C08L2312/00 ,  C08L2555/40 ,  Y10T428/24405 ,  C08L2666/06

    摘要： A polypropylene resin composition which comprises:

    (a) 100 parts by weight of a crystalline polypropylene resin, and
    (b) 0.05 or more but less than 1 part by weight of crosslinked polymer beads which have a weight average particle diameter of 0.5-5 µm and which comprise 60-96% by weight of styrenic monomer units, 2-38% by weight of radical-polymerizable monomer units, the refractive index of the polymer of the radical-polymerizable monomer being 1.50 or less, and 2-50% by weight of crosslinkable monomer units; may be oriented in at least a uniaxial direction to give an oriented film having an average protuberance height of 60-600 nm on its surface and possessing good transparency, slip and blocking resistance characteristics.

    摘要翻译： 一种聚丙烯树脂组合物，其包含：（a）100重量份的结晶聚丙烯树脂，和（b）0.05重量份以上且小于1重量份的重均粒径为0.5-5μm的交联聚合物珠粒 m，并且包含60-96重量％的苯乙烯单体单元，2-38重量％的可自由基聚合的单体单元，可自由基聚合单体的折射率为1.50以下，和2-50重量％ 的可交联单体单元; 可以至少在单轴方向取向，从而在其表面上具有平均突起高度为60-600nm的取向膜，并且具有良好的透明性，防滑和抗粘连性。

    Syndiotactic crystalline copolymer of propylene and butene-1
    25.
    发明公开
    Syndiotactic crystalline copolymer of propylene and butene-1 失效
    Syndiotaktischen kristallines共聚物，Propen und Buten-1

    公开(公告)号：EP0686648A1

    公开(公告)日：1995-12-13

    申请号：EP95304019.3

    申请日：1995-06-09

    申请人： SUMITOMO CHEMICAL COMPANY, LIMITED

    发明人： Sadatoshi, Hajime

    IPC分类号： C08F210/08 ,  C08F210/06

    CPC分类号： C08F210/06 ,  C08F210/08 ,  C08F2500/16

    摘要： The present invention relates to provide crystalline copolymer of propylene and butene-1 with an essentially syndiotactic structure, which have crystalline structure even in the region where content of butene-1 is relatively high and which is excellent in stiffness.
    A crystalline copolymer of propylene and butene-l with an essentially syndiotactic structure, the copolymer containing from 31 to 99 mole % of butene-l and having an intrinsic viscosity [η] of from 0.5 to 10 dl/g when measured in tetralin at 135°C and a crystalline structure.

    摘要翻译： 本发明涉及提供具有基本上间同立构结构的丙烯和丁烯-1的结晶共聚物，即使在丁烯-1的含量相对较高并且刚度优异的区域中也具有结晶结构。 丙烯和丁烯-1具有基本间同立构结构的结晶共聚物，该共聚物含有31至99摩尔％的丁烯-1，并且当在135℃的四氢化萘中测量时，其特性粘度η为0.5至10dl / g DEG和结晶。

    Polypropylene block copolymers and films thereof
    26.
    发明公开
    Polypropylene block copolymers and films thereof 无效
    聚丙烯嵌段共聚物及其薄膜

    公开(公告)号：EP0588581A3

    公开(公告)日：1994-07-27

    申请号：EP93307190.4

    申请日：1993-09-13

    申请人： SUMITOMO CHEMICAL COMPANY LIMITED

    发明人： Sadatoshi, Hajime ,  Ima, Seiichiro ,  Wakamatsu, Kazuki ,  Mori, Jiro ,  Shiratani, Eisuke

    IPC分类号： C08F297/08

    CPC分类号： C08L53/00 ,  C08F297/083

    摘要： A melt-kneaded polypropylene block copolymer is obtained, using a Ziegler-Natta catalyst, firstly by polymerizing propylene monomer to form a polymer comprising polypropylene (component A) in the substantial absence of an inert solvent. Secondly, a mixture of ethylene and propylene is polymerized in the vapor phase to form an ethylene-propylene copolymer (component B: ethylene content 20-50%). Content of A in the final polymer is 60-80%, and of B 20-40%, by weight. The intrinsic viscosity of component B ([η]B is at least 2.0 dl/g, and the ratio [η]B/[η]A, where [η]B is the intrinsic viscosity of the component A, is 1.8 or less. The block copolymer so produced is of good appearance, being free from fish eyes, and has excellent low-temperature impact, heat and blocking resistance.

    Crystalline polypropylene and compositions thereof
    30.
    发明公开
    Crystalline polypropylene and compositions thereof 无效
    Kristallines Polypropylen und daraus gefertigte Zusammensetzungen。

    公开(公告)号：EP0368577A2

    公开(公告)日：1990-05-16

    申请号：EP89311433.0

    申请日：1989-11-03

    申请人： SUMITOMO CHEMICAL COMPANY, LIMITED

    发明人： Kakugo, Masahiro ,  Sadatoshi, Hajime ,  Sakai, Jiro ,  Wakamatsu, Kazuki ,  Chikaishi, Kazuhiro ,  Kojima, Toshiro ,  Nomura, Hideo ,  Fukao, Tomohisa

    IPC分类号： C08L23/10

    CPC分类号： C08L23/142 ,  C08F297/08 ,  C08F297/086 ,  C08L23/10 ,  C08L2205/02 ,  C08L2308/00 ,  C08L2666/04

    摘要： A crystalline polypropylene has a ratio of weight average molecular weight to number average molecular weight of 10 or more, preferably 15 or more, an intrinsic viscosity (η) of from 0.8 to 5.0 dl/g (measured in tetralin at 135°C), a cold xylene-soluble content of not more than 4% by weight, a density (d) of 0.910 g/cm or more (measur­ed at 23°C), and a long period (L) (Å) (measured at 25°C by a small-angle X-ray scattering method) satisfying:
    L ≦ Lc = 6667d - 5894
    wherein d is the density at 23°C and Lc is a value (Å) obtained by Lc =6667d - 5894.
    The crystalline polymer can be compounded with 1 ppm to 20 wt% of an alpha-olefin or vinylcyloalkane whose homo­polymer melts at at least 270°C, the composition produced having (d) and (L) as above; part of the composition can be block copolymerized.
    Catalysts for producing the polymer are described.
    The product as a powder is melted and moulded to shape. The mouldings have good rigidity, heat resistance and surface hardness.

    摘要翻译： 结晶性聚丙烯的重均分子量与数均分子量的比例为10以上，优选为15以上，特性粘度（η）为0.8〜5.0dl / g（在135℃的四氢化萘中测定）， 冷二甲苯可溶物含量不超过4重量％，密度（d）为0.910g / cm 3以上（在23℃下测定）和长时间（L）（ANGSTROM）（25℃测定） C，通过小角X射线散射法）满足：L <= Lc = 6667d-5894其中d是23℃下的密度，Lc是通过Lc = 6667d-5894获得的值（ANGSTROM）。结晶 聚合物可以与1ppm至20wt％的均聚物在至少270℃熔融的α-烯烃或乙烯基环烷烃混合，所制备的组合物具有如上所述的（d）和（L）; 组合物的一部分可以是嵌段共聚的。 描述了用于生产聚合物的催化剂。 将作为粉末的产品熔化并模塑成型。 模具具有良好的刚性，耐热性和表面硬度。