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    Biaxially oriented polypropylene-base film
    2.
    发明授权
    Biaxially oriented polypropylene-base film 有权
    双轴取向聚丙烯基膜

    公开(公告)号：US06326080B1

    公开(公告)日：2001-12-04

    申请号：US09319355

    申请日：1999-09-02

    申请人： Chikashi Okayama ,  Takanori Nakashima ,  Yasuhiro Shiraishi ,  Noriaki Saito ,  Yuya Ishimoto

    发明人： Chikashi Okayama ,  Takanori Nakashima ,  Yasuhiro Shiraishi ,  Noriaki Saito ,  Yuya Ishimoto

    IPC分类号： B32B516

    摘要： To provide an economically advantageous biaxially oriented polypropylene-based film, which is excellent in straight cuttability along the MD direction, strength along the TD direction and transparency, a film-forming material which comprises a polypropylene-based resin material consisting of 40 to 88% by weight of crystalline polypropylene, and 60 to 12% by weight of propylene-&agr;-olefin copolymer dispersed as particles in the crystalline polypropylene is biaxially oriented to afford a biaxially oriented polypropylene-based film wherein the particles of the copolymer have a mean dispersed particle diameter of 0.1 &mgr;m or less along the TD direction.

    摘要翻译： 为了提供经济有效的双轴取向聚丙烯基膜，其沿MD方向的直切割性优异，沿TD方向的强度和透明度，成膜材料包含由40〜88％ 的结晶聚丙烯，并且以结晶聚丙烯分散为颗粒的丙烯-α-烯烃共聚物的60〜12重量％进行双轴取向，得到双轴取向的聚丙烯系膜，其中共聚物的颗粒具有平均分散粒子 沿TD方向的直径为0.1μm以下。

    Unoriented polypropylene molding
    3.
    发明授权
    Unoriented polypropylene molding 有权
    无取向聚丙烯成型

    公开(公告)号：US06258893B1

    公开(公告)日：2001-07-10

    申请号：US09424001

    申请日：1999-11-15

    申请人： Chikashi Okayama ,  Takanori Nakashima ,  Yuya Ishimoto ,  Shinji Nakata ,  Yasuhiro Mochizuki ,  Shinichi Akitaya ,  Yoshitaka Sumi

    发明人： Chikashi Okayama ,  Takanori Nakashima ,  Yuya Ishimoto ,  Shinji Nakata ,  Yasuhiro Mochizuki ,  Shinichi Akitaya ,  Yoshitaka Sumi

    IPC分类号： C08I800

    CPC分类号： C08J5/18 ,  C08J2323/10 ,  C08L23/10 ,  C08L23/12 ,  C08L23/16 ,  C08L2666/04

    摘要： An unoriented polypropylene-based film or sheet possessing excellent impact resistance at low temperature, transparency, heat resistance at low temperature and excellent tear strength and/or stress whitening resistance. A molding material which comprises a polypropylene-based resin material comprising 40 to 80% by weight of crystalline polypropylene and 60 to 20% by weight of propylene-&agr;-olefin copolymer containing 20 to 80% by weight of propylene polymerization units, the propylene-&agr;-olefin copolymer dispersed as particles in the crystalline polypropylene, is unoriently molded to afford a film-shaped or sheet-shaped molding, wherein the particle diameter have an aspect ratio (L/D) of mean dispersed particle length (L) to mean dispersed particle diameter along the thickness of the molding (D) of 30 or more in a cross section of the molding along the MD direction, and the mean dispersed particle diameter of 0.3 &mgr;m or less.

    摘要翻译： 在低温下具有优异的耐冲击性，低透明性，耐热性以及优异的撕裂强度和/或耐应力增白性的无取向聚丙烯类膜或片。 一种模塑材料，其包含聚丙烯基树脂材料，其包含40至80重量％的结晶聚丙烯和60至20重量％的含有20至80重量％丙烯聚合单元的丙烯-α-烯烃共聚物， 作为颗粒分散在结晶聚丙烯中的α-烯烃共聚物是无取向成型的，以提供薄膜状或片状模制品，其中粒径具有平均分散粒度长度（L）至平均值的纵横比（L / D） 分散粒径沿成型体（D）的厚度为30以上，沿着MD方向在成形体的截面中，平均分散粒径为0.3μm以下。

    Process for producing polypropylene or propylene random copolymer
    5.
    发明授权
    Process for producing polypropylene or propylene random copolymer 有权
    生产聚丙烯或丙烯无规共聚物的方法

    公开(公告)号：US06512061B1

    公开(公告)日：2003-01-28

    申请号：US09889223

    申请日：2001-07-13

    申请人： Masami Kimura ,  Takanori Nakashima ,  Chikashi Okayama

    发明人： Masami Kimura ,  Takanori Nakashima ,  Chikashi Okayama

    IPC分类号： C08F442

    CPC分类号： C08F210/16 ,  C08F10/00 ,  C08F210/06 ,  Y10S526/901 ,  C08F4/6567 ,  C08F4/656 ,  C08F4/6492 ,  C08F4/6465 ,  C08F2500/12 ,  C08F210/08

    摘要： The invention provides a process for producing polypropylene and/or random copolymers of propylene type using a stereoregular catalyst which comprises a titanium-containing solid catalyst component (A), an organoaluminum compound (B) and if required an organosilicon compound (C), wherein [I] before carrying out homopolymerization of propylene or random copolymerization of propylene with an &agr;-olefin other than propylene, the above component (A), an organoaluminum compound (B′) and if required an organosilicon compound (C′) are used, and a small amount of propylene or ethylene and/or an &agr;-olefin of 4-20 carbon atoms for pre-activation treatment is supplied to the above component (A), and [II] a catalyst which is prepared by adding an organosilicon compound (C″) to the pre-activated stereoregular catalyst in a molar ratio of 0.1-50 as Si/Ti, is used to produce polypropylene or propylene random copolymers.

    摘要翻译： 本发明提供一种使用立体规则催化剂制备丙烯类型和/或无规共聚物的方法，其包括含钛固体催化剂组分（A），有机铝化合物（B）和如果需要的有机硅化合物（C），其中 在进行丙烯均聚或丙烯与丙烯以外的α-烯烃的无规共聚合时，上述组分（A），有机铝化合物（B'）和如果需要的话，使用有机硅化合物（C'）， 并将少量的丙烯或乙烯和/或4-20个碳原子的α-烯烃用于预活化处理被提供给上述组分（A），和[II]通过将有机硅化合物 （C“）与预活化的立构规整催化剂的摩尔比为0.1-50作为Si / Ti，用于生产聚丙烯或丙烯无规共聚物。

    Propylene polymer blends, processes of producing the same and polypropylene resin compositions
    6.
    发明授权
    Propylene polymer blends, processes of producing the same and polypropylene resin compositions 失效
    丙烯聚合物共混物，其制备方法和聚丙烯树脂组合物

    公开(公告)号：US06319991B1

    公开(公告)日：2001-11-20

    申请号：US09081678

    申请日：1998-05-20

    申请人： Chikashi Okayama ,  Takanori Nakashima ,  Shinichi Akitaya ,  Yoshitaka Sumi

    发明人： Chikashi Okayama ,  Takanori Nakashima ,  Shinichi Akitaya ,  Yoshitaka Sumi

    IPC分类号： C08L2314

    CPC分类号： C08L23/142 ,  B01J2219/182 ,  C08L23/14 ,  C08L23/16 ,  C08L2205/02 ,  C08L2308/00 ,  C08L2666/06

    摘要： A propylene polymer blend is disclosed which comprises (A) a propylene-&agr;-olefin random copolymer with a propylene content of 90 to 99% by weight and (B) a propylene-&agr;-olefin random copolymer with a propylene content of 55 to 90% by weight, wherein the intrinsic viscosity ([&eegr;B]) of the copolymer B ranges from 1.3 to 3.5 dl/g, the ratio ([&eegr;B]/[&eegr;A]) of the intrinsic viscosity ([&eegr;B]) of the copolymer B to the intrinsic viscosity ([&eegr;A]) of the copolymer A ranges from 0.5 to 1.3 and a product (([&eegr;B]/[&eegr;A])×(WA/WB)) of the intrinsic ratio ([&eegr;B]/[&eegr;A]) of both copolymers and the weight ratio (WA/WB) of both copolymers ranges from 1.0 to 4.5. A polypropylene resin composition comprises 99 to 99.9999% by weight of the propylene polymer blend and 1 to 0.0001% by weight of an &agr;-crystal nucleating agent.

    摘要翻译： 公开了一种丙烯聚合物共混物，其包含（A）丙烯含量为90至99重量％的丙烯-α-烯烃无规共聚物和（B）丙烯含量为55至90的丙烯-α-烯烃无规共聚物 重量％，其中共聚物B的特性粘度（η）为1.3-3.5dl / g，共聚物B的特性粘度（η）的比值（ηetaA）为 相对于共聚物A的特性粘度（η）为0.5-1.3，产物（（[ηa/ [ηa]）x（WA / WB））的固有比（[ηa] / [η] ）和两种共聚物的重量比（WA / WB）为1.0至4.5。 聚丙烯树脂组合物包含99至99.9999重量％的丙烯聚合物共混物和1至0.0001重量％的α-晶体成核剂。

    Film having gas permeability
    7.
    发明授权
    Film having gas permeability 有权
    具有透气性的薄膜

    公开(公告)号：US06348271B1

    公开(公告)日：2002-02-19

    申请号：US09445194

    申请日：1999-12-02

    申请人： Shinji Nakata ,  Youichi Kugimiya ,  Chikashi Okayama ,  Takanori Nakashima ,  Yuji Ando

    发明人： Shinji Nakata ,  Youichi Kugimiya ,  Chikashi Okayama ,  Takanori Nakashima ,  Yuji Ando

    IPC分类号： B32B2700

    CPC分类号： C08J5/18 ,  B29C55/04 ,  B29K2023/12 ,  B29K2995/0065 ,  C08J2323/10 ,  C08J2323/16 ,  C08L23/10 ,  C08L23/12 ,  C08L23/142 ,  C08L23/16 ,  Y10T428/31855 ,  Y10T428/31909 ,  C08L2666/04

    摘要： An object of the present invention is to provide a drawn polypropylene film as a wrapping material that has transparency and mechanical properties sufficient as a wrapping material yet having the needed gas permeability for maintaining the freshness of the enclosed goods and additionally enables control of permeability of gases to a certain proportion if needed even if secondary steps such as perforation processing, etc., are eliminated. The present invention provides a polypropylene film drawn at least monoaxially which comprises a propylene resin composition comprising a propylene polymer component and a copolymer component containing ethylene and propylene, wherein a content of the copolymer component is 7 to 70% by weight based on the weight of the composition, and the film has a thickness [D1] of 10 to 100&mgr;m and has the following characteristics (1) to (3): (1) [TH2O] (a permeability of water vapor)=9 to 50 (unit: g/m2·24 Hr, in accordance with JIS Z-0208), (2) [TO2] (a permeability of oxygen gas)=600-12,500 (unit: nmol (STP)/m2·s·100 kPa, in accordance with JIS K-7126A), (3) [Tethylene] (a permeability of ethylene gas)=600-22,500 (unit: nmol (STP)/m2·s·100 kPa, in accordance with JIS K-7126A.)

    摘要翻译： 本发明的目的是提供一种作为包装材料的拉伸聚丙烯薄膜，其具有足够的透明度和机械性能作为包装材料，但具有所需的气体渗透性，以保持封闭的商品的新鲜度，并且还可以控制气体的渗透性 如果需要，即使消除诸如穿孔处理等的二次步骤，也能够达到一定比例。 本发明提供至少单轴拉伸的聚丙烯薄膜，其包含丙烯聚合物组分和含有乙烯和丙烯的共聚物组分的丙烯树脂组合物，其中共聚物组分的含量为7至70重量％，基于 该组合物和膜的厚度[D1]为10〜100μm，具有以下特征（1）〜（3）：（1）[TH 2 O]（水蒸气的渗透性）= 9〜50（单位：g / m2·Hr，根据JIS Z-0208），（2）[TO2]（氧气的渗透性）= 600-12,500（单位：nmol（STP）/ m 2·s.100kPa），根据 JIS K-7126A），（3）[Tethylene]（乙烯气体的渗透性）= 600-22,500（单位：nmol（STP）/ m2.s.100kPa，按照JIS K-7126A）

    Polypropylene composition and process for producing the same
    8.
    发明授权
    Polypropylene composition and process for producing the same 有权
    聚丙烯组合物及其制备方法

    公开(公告)号：US06271310B1

    公开(公告)日：2001-08-07

    申请号：US09402998

    申请日：1999-10-15

    申请人： Chikashi Okayama ,  Takanori Nakashima ,  Akira Yamauchi ,  Jun Saito ,  Michitaka Sasaki

    发明人： Chikashi Okayama ,  Takanori Nakashima ,  Akira Yamauchi ,  Jun Saito ,  Michitaka Sasaki

    IPC分类号： C08F800

    CPC分类号： C08L23/10 ,  C08L23/02 ,  C08L23/0815 ,  C08L23/12 ,  C08L23/16 ,  C08L2666/04

    摘要： A polypropylene composition which contains 0.01 to 5 parts by weight of an olefin (co)polymer (a) having an intrinsic viscosity of 15 to 100 dl/g, 100 parts by weight of a propylene homopolymer (b) having an intrinsic viscosity of 0.2 to 10 dl/g, and 28 to 300 parts by weight of an ethylene/propylene copolymer (c) having an intrinsic viscosity of 0.2 to 10 dl/g, and in which the ratio of the melt flow rate of the homopolymer (b) to that of the copolymer (c), MFRPP/MFRRC, is 0.3 to 4 and the product of the ratio of the intrinsic viscosity of the copolymer (c) to that of the homopolymer (b), [&eegr;]RC/[&eegr;]PP, and the weight ratio of the amount of the homopolymer (b) to that of the copolymer (c), WPP/WRC, is in the range of from 0.2 to 3.0. The composition has high melt tension, high crystallization temperature, and excellent thermal stability, and yields a molded article having excellent transparency, reduced molding shrinkage, and excellent resistance to whitening by impact or bending.

    摘要翻译： 含有0.01〜5重量份特性粘度为15〜100dl / g的烯烃（共）聚合物（a），100重量份特性粘度为0.2的丙烯均聚物（b）的聚丙烯组合物 至10dl / g，和28-300重量份特性粘度为0.2-10dl / g的乙烯/丙烯共聚物（c），其中均聚物（b）的熔体流动速率 共聚物（c）的MFRPP / MFRRC为0.3〜4，共聚物（c）的特性粘度与均聚物（b）的特性粘度的比，ηRC /η PP，均聚物（b）与共聚物（c）的重量比WPP / WRC的重量比在0.2〜3.0的范围内。 该组合物具有高熔体张力，高结晶温度和优异的热稳定性，并且得到具有优异的透明性，降低的成型收缩率和通过冲击或弯曲而具有优异的抗白化性能的模制品。

    Polyolefin type resinous composition
    9.
    发明授权
    Polyolefin type resinous composition 有权
    聚烯烃类树脂组合物

    公开(公告)号：US06255390B1

    公开(公告)日：2001-07-03

    申请号：US09402788

    申请日：1999-10-12

    申请人： Takehiko Enomoto ,  Chikashi Okayama

    发明人： Takehiko Enomoto ,  Chikashi Okayama

    IPC分类号： C08L5300

    CPC分类号： C08L53/00 ,  C08L2666/04

    摘要： A polyolefin type resinous composition comprising 99 to 80% by weight of a propylene type block copolymer [A] and 1 to 20% by weight of an ethylene type or styrene type elastomer [B] which being superior in a transparency, a coloring property and a dimensional stability is provided. The said polyolefin composition comprises the said [A] consisting of a propylene homopolymer component and an ethylene propylene copolymer component having respective limiting viscosities: [&eegr;]PP, [&eegr;]RC, weight %: WPP, WRC, and melt flow rates: [MFR]PP, [MFR]RC, as well as the said [B] having a limiting viscosity: [&eegr;]R and a melt flow rate: [MFR]R, in such a way that the following relationships being established; ([&eegr;]RC/[&eegr;]PP)×(WPP/WRC)=0.2-3.0, ([MFR]RC/[MFR]PP)=0.3-4.0, [&eegr;]RC/[&eegr;]PP=0.7-1.2, [&eegr;]RC>6.5, [MFR]R/[MFR]PP=0.3-4, and [&eegr;]R/[&eegr;]PP=0.7-1.2.

    摘要翻译： 一种聚烯烃类树脂组合物，其包含99-80重量％的丙烯型嵌段共聚物[A]和1至20重量％的乙烯类或苯乙烯型弹性体[B]，其透明性，着色性和 提供尺寸稳定性。所述聚烯烃组合物包含由丙烯均聚物组分和乙烯丙烯共聚物组分组成的所述[A]，其具有各自的特性粘度：ηPP，ηRC，重量％：WPP，WRC， 和熔体流动速率：[MFR] PP，[MFR] RC，以及所述[B]具有特性粘度：ηR和熔体流动速率：[MFR] R，使得以下 建立关系;