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    Polypropylene composition and film thereof
    2.
    发明授权
    Polypropylene composition and film thereof 失效
    聚丙烯组合物及其膜

    公开(公告)号：US5340878A

    公开(公告)日：1994-08-23

    申请号：US79558

    申请日：1993-06-22

    申请人： Hajime Sadatoshi ,  Seiichiro Ima ,  Eisuke Shiratani

    发明人： Hajime Sadatoshi ,  Seiichiro Ima ,  Eisuke Shiratani

    IPC分类号： C08J5/18 ,  C08L23/00 ,  C08L23/06 ,  C08L23/10 ,  C08L23/14 ,  C08L23/04

    CPC分类号： C08L23/10 ,  C08L23/142 ,  C08L23/06

    摘要： A polypropylene composition comprising 100 parts by weight of a crystalline propylene polymer having a melt flow rate of at least 3.0 g/10 minutes and a molecular weight distribution of less than 5.0 and from 0.01 to less than 4.0 parts by weight of a crystalline ethylene polymer having a melt flow rate of from 0.5 to 300 g/10 minutes, a density of at least 0.910 g/cm.sup.3, and a crystallization temperature of at least 85.degree. C. and which is at least 1.degree. C. higher than the crystallization temperature of the crystalline propylene polymer.

    摘要翻译： 一种聚丙烯组合物，其包含100重量份的熔体流动速率为至少3.0g / 10分钟，分子量分布小于5.0和0.01至小于4.0重量份结晶乙烯聚合物的结晶丙烯聚合物 熔体流动速率为0.5-300g / 10分钟，密度至少为0.910g / cm3，结晶温度至少为85℃，比结晶温度高至少1℃ 的结晶丙烯聚合物。

    Process for producing propylene block copolymers
    4.
    发明授权
    Process for producing propylene block copolymers 失效
    制备丙烯嵌段共聚物的方法

    公开(公告)号：US4433110A

    公开(公告)日：1984-02-21

    申请号：US255005

    申请日：1981-04-17

    申请人： Kazuo Baba ,  Shyozo Kawamata ,  Yoshiharu Fukui ,  Seiichiro Ima ,  Tatsuya Miyatake

    发明人： Kazuo Baba ,  Shyozo Kawamata ,  Yoshiharu Fukui ,  Seiichiro Ima ,  Tatsuya Miyatake

    IPC分类号： C08F297/08

    CPC分类号： C08F297/08 ,  Y10S526/916

    摘要： A propylene block copolymer produced by polymerizing propylene, ethylene and an .alpha.-olefin having 4 to 8 carbon atoms in two stages with a Zieglar-Natta catalyst by a process which comprises (A) supplying propylene and ethylene in the first stage and propylene and the .alpha.-olefin in the second stage, or (B) supplying propylene and the .alpha.-olefin in the first stage and propylene and ethylene in the second stage, to the polymerization system, wherein the amounts of propylene and ethylene supplied in the first stage of (A) or in the second stage of (B) are 90 to 99 wt % and 10 to 1 wt % based on the total amount of propylene and ethylene supplied in the first stage of (A) or in the second stage of (B), respectively, the amounts of propylene and the .alpha.-olefin supplied in the second stage of (A) or in the first stage of (B) are 60 to 98 wt % and 40 to 2 wt % based on the total amount of propylene and the .alpha.-olefin supplied in the second stage of (A) or in the first stage of (B), respectively, and the amounts of copolymers formed in the first and second stages are 20 to 90 wt % and 80 to 10 wt % based on the final block copolymer, respectively.

    摘要翻译： 通过包括（A）在第一阶段中供应丙烯和乙烯的方法，用齐格列 - 纳塔催化剂将丙烯，乙烯和具有4至8个碳原子的碳原子的α-烯烃分两步制备的丙烯嵌段共聚物，其中丙烯和 第二阶段中的α-烯烃或（B）将第一阶段中的丙烯和α-烯烃和第二阶段中的丙烯和乙烯供应到聚合体系中，其中在第一阶段中供应的丙烯和乙烯的量 （A）或（B）的第二阶段中（A）或（B）的第二阶段中的丙烯和乙烯的总量为90〜99重量％，10〜1重量％ ）在（A）或第（B）的第一阶段中供应的丙烯和α-烯烃的量分别为基于丙烯总量的60至98重量％和40至2重量％ 和在（A）或第一阶段的第二阶段中提供的α-烯烃 （B），第一和第二阶段中形成的共聚物的量分别为最终嵌段共聚物的20〜90重量％和80〜10重量％。

    Propylene-ethylene copolymer having improved stretchability
    5.
    发明授权
    Propylene-ethylene copolymer having improved stretchability 失效
    具有改善的拉伸性的丙烯 - 乙烯共聚物

    公开(公告)号：US4414373A

    公开(公告)日：1983-11-08

    申请号：US399146

    申请日：1982-07-16

    申请人： Akinobu Shiga ,  Kiyoshi Matsuyama ,  Masahiro Kakugo ,  Yukio Naito ,  Seiichiro Ima ,  Katsuyoshi Yamashita

    发明人： Akinobu Shiga ,  Kiyoshi Matsuyama ,  Masahiro Kakugo ,  Yukio Naito ,  Seiichiro Ima ,  Katsuyoshi Yamashita

    IPC分类号： C08F4/00 ,  C08F2/00 ,  C08F4/60 ,  C08F4/64 ,  C08F10/00 ,  C08F10/06 ,  C08F210/00 ,  C08F210/06 ,  C08F210/16

    CPC分类号： C08F210/06

    摘要： In a process for producing polypropylene comprising polymerizing propylene in the presence of hydrogen and a catalyst system comprising (A) titanium trichloride obtained by reducing titanium tetrachloride with an organoaluminum compound and reacting the reduced solid with an ether represented by the formula:R.sup.1 --O--R.sup.2wherein R.sup.1 and R.sup.2 are defined hereinbefore, and a halogen compound selected from the group consisting of (i) halogen or interhalogen compounds of the formula, X.sup.1 X.sup.2.sub.a (wherein X.sup.1, X.sup.2 and a are defined hereinbefore), (ii) titanium halides, and (iii) organic halogen compounds, simultaneously or successively and (B) an organoaluminum compound, the improvement which comprises supplying ethylene together with propylene to the polymerization system such that the ethylene concentration in the vapor phase of the system based on the total amount of propylene, ethylene and hydrogen in the vapor phase of the system is 0.15 to 1.5 mol % to obtain a propylene-ethylene copolymer having an ethylene content of from 0.1 to 1.0 wt % is disclosed. The propylene-ethylene copolymer is improved in stretchability.

    摘要翻译： 在制备聚丙烯的方法中，包括在氢气存在下聚合丙烯和催化剂体系，所述催化剂体系包含（A）通过用有机铝化合物还原四氯化钛获得的三氯化钛，并将还原的固体与由下式表示的醚反应：R1-O- 其中R 1和R 2如上定义，卤素化合物选自（ⅰ）卤素或下式的卤代化合物：X1X2a（其中X1，X2和a定义如前），（ⅱ）卤化钛和 （iii）有机卤素化合物，同时或相继和（B）有机铝化合物，其改进包括将乙烯与丙烯一起供应到聚合体系中，使得基于丙烯总量的体系的气相中的乙烯浓度 ，系统的气相中的乙烯和氢为0.15〜1.5摩尔％，得到丙烯 - 乙烯共聚物 公开了乙烯含量为0.1〜1.0重量％。 丙烯 - 乙烯共聚物的拉伸性提高。

    Polypropylene film
    6.
    发明授权
    Polypropylene film 失效
    聚丙烯膜

    公开(公告)号：US5726269A

    公开(公告)日：1998-03-10

    申请号：US592705

    申请日：1996-01-26

    申请人： Seiichiro Ima ,  Eisuke Shiratani ,  Shigeki Kishiro

    发明人： Seiichiro Ima ,  Eisuke Shiratani ,  Shigeki Kishiro

    IPC分类号： C08F10/00 ,  C08F10/06 ,  C08F210/06 ,  C08J5/18 ,  C08F110/06

    CPC分类号： C08J5/18 ,  C08F10/06 ,  C08F210/06 ,  C08J2323/10

    摘要： A film having a low dependency of film transparency on film-forming conditions and film thickness, and having superior transparency and rigidity without compromising the original properties of polypropylene film. The film is produced from a polypropylene prepared from a propylene polymer having (1) a stereoirregularity index mmrr/mmmm of a part insoluble in xylene at 20.degree. C. within the range of 0.0095 to 0.0200; (2) a melting temperature within the range of 145.degree. to 160.degree. C.; (3) a part soluble in xylene at 20.degree. C. of 3.5% by weight or less, the polypropylene having: (4) a melt flow rate at 230.degree. C. within the range of 5 to 15 g/10 min.; and (5) a swelling ratio within the range of 1.20 to 1.35.

    摘要翻译： 对薄膜透明性对成膜条件和膜厚度的依赖性低的膜，并且具有优异的透明性和刚性而不损害聚丙烯薄膜的原始性能的薄膜。 该膜由丙烯聚合物制备，该聚丙烯具有（1）在20℃下不溶于二甲苯的部分的立构不规则指数mmrr / mmmm，范围为0.0095至0.0200; （2）熔融温度在145〜160℃的范围内。 （3）在20℃下可溶于二甲苯的部分为3.5重量％以下，聚丙烯具有：（4）在230℃下的熔体流动速率在5〜15g / 10分钟的范围内。 和（5）溶胀比在1.20至1.35的范围内。

    Polypropylene multi-layer film
    8.
    发明授权
    Polypropylene multi-layer film 失效
    聚丙烯多层膜

    公开(公告)号：US4769284A

    公开(公告)日：1988-09-06

    申请号：US854803

    申请日：1986-04-23

    申请人： Masahiro Kakugo ,  Seiichiro Ima ,  Tatsuya Miyatake ,  Hiroyuki Harada

    发明人： Masahiro Kakugo ,  Seiichiro Ima ,  Tatsuya Miyatake ,  Hiroyuki Harada

    IPC分类号： C08L23/00 ,  B32B27/32 ,  C08L7/00 ,  C08L21/00 ,  C08L23/14 ,  C08L23/16 ,  C08L101/00 ,  B32B27/00

    CPC分类号： B32B27/32 ,  Y10T428/2826 ,  Y10T428/31913

    摘要： A polypropylene multi-layer film which comprises a substrate layer formed of crystalline polypropylene and a composition laminated on at least one side of said substrate layer, said composition comprising 70 to 95% by weight of (A) a crystalline propylene-ethylene copolymer having an ethylene content of 1.5 to 6.0% by weight and/or a crystalline propylene-.alpha.-olefin copolymer having a propylene content of 80 to 98% by weight, a butene-1 content of 2 to 20% by weight, and an ethylene content of 0 to 5% by weight, and 5 to 30% by weight of (B) a crystalline propylene-butene-1 copolymer which is a copolymer obtained by decomposing a crystalline propylene-butene-1 copolymer having a butene-1 content of 25 to 45% by weight, an intrinsic viscosity of 2.5 dl/g or more as determined in tetralin at 135.degree. C., and a proportion of 35% by weight or more of a polymer component soluble in xylene at 20.degree. C., and containing 1.5% by weight or less of a polymer component having a molecular weight calculated in terms of polystyrene of 10,000 or less as determined by GPC.

    摘要翻译： 一种聚丙烯多层膜，其包含由结晶聚丙烯形成的基材层和层压在所述基材层的至少一侧上的组合物，所述组合物包含70-95重量％的（A）结晶丙烯 - 乙烯共聚物，其具有 乙烯含量为1.5〜6.0重量％，和/或丙烯含量为80〜98重量％，丁烯-1含量为2〜20重量％的结晶性丙烯-α-烯烃共聚物，乙烯含量为 0至5重量％，和5至30重量％的（B）结晶丙烯 - 丁烯-1共聚物，其是通过将丁烯-1含量为25的结晶丙烯 - 丁烯-1共聚物分解得到的共聚物， 45重量％，在135℃下在四氢化萘中测定的特性粘度为2.5dl / g以上，在20℃下可溶于二甲苯的聚合物成分的比例为35重量％以上， 1.5重量％以下的具有分子量的聚合物组分 以GPC测定的聚苯乙烯换算为10,000以下。

    Propylene-ethylene random copolymer film
    10.
    发明授权
    Propylene-ethylene random copolymer film 失效
    丙烯 - 乙烯无规共聚物膜

    公开(公告)号：US6057413A

    公开(公告)日：2000-05-02

    申请号：US706754

    申请日：1996-09-03

    申请人： Seiichiro Ima ,  Kazuki Wakamatsu ,  Shigeki Kishiro

    发明人： Seiichiro Ima ,  Kazuki Wakamatsu ,  Shigeki Kishiro

    IPC分类号： B29C47/00 ,  B29K67/00 ,  B29L7/00 ,  C08F2/34 ,  C08F4/60 ,  C08F4/646 ,  C08F4/654 ,  C08F4/658 ,  C08F10/00 ,  C08F210/06 ,  C08F210/16 ,  C08J5/18 ,  C08F4/649

    CPC分类号： C08J5/18 ,  C08F10/00 ,  C08F210/06 ,  C08F210/16 ,  C08J2323/14

    摘要： A propylene-ethylene random copolymer prepared by copolymerizing propylene with ethylene in the substantial absence of a liquid medium with a catalyst system comprising:(A) a solid catalyst component containing magnesium, titanium, a halogen and a first electron donor as an essential component,(B) an organoaluminum compound and(C) a second electron donor compound, wherein an ethylene content (E) of the copolymer is from 3.5 to 7.0% by weight, and wherein a content of a xylene-soluble portion at 20.degree. C. (D) of the copolymer satisfies the relationship D.ltoreq.E+2.0 (% by weight). Films of the copolymer have an excellent appearance (little bleed whitening) and an excellent balance between low-temperature heat-sealing property and rigidity.

    摘要翻译： 基本上不存在液体介质的丙烯与乙烯共聚制备的丙烯 - 乙烯无规共聚物，催化剂体系包含：（A）含有镁，钛，卤素和第一电子给体作为必要组分的固体催化剂组分， （B）有机铝化合物和（C）第二电子给体化合物，其中共聚物的乙烯含量（E）为3.5〜7.0重量％，其中二甲苯可溶部分的含量为20℃ （D）满足D