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    Polymer composition for pipes
    12.
    发明申请
    Polymer composition for pipes 有权
    管道聚合物组成

    公开(公告)号：US20020045711A1

    公开(公告)日：2002-04-18

    申请号：US09832227

    申请日：2001-04-10

    Inventor： Mats Backman ,  Eeva-Leena Heino ,  Solveig Johansson ,  Jussi Laurell ,  Arja Lehtinen ,  Jarmo Lindroos ,  Marja Ora ,  Elisabeth Ribarits ,  Teija Sihvonen ,  Jari Aarila

    IPC: C08L023/04

    CPC classification number: C08F10/02 ,  C08F110/02 ,  C08F210/16 ,  C08L23/06 ,  C08L23/0815 ,  Y10S138/07 ,  C08F2/001 ,  C08L2666/04 ,  C08F2500/02 ,  C08F2500/12 ,  C08F2500/07 ,  C08F2500/17 ,  C08F2500/13 ,  C08F210/14 ,  C08F2500/01 ,  C08F210/08

    Abstract: A multimodal polymer composition for pipes is disclosed as well as a pipes made thereof. The polymer is a multimodal polyethylene with a density of 0.930-0.965 g/cm3, and a viscosity at a shear stress of 747 Pa (null747Pa) of at least 650 Pa.s, said multimodal polyethylene comprising a low molecular weight (LMW) ethylene homopolymer fraction and a high molecular weight (HMW) ethylene copolymer fraction, said HMW fraction having a weight ratio of the LMW fraction to the HMW fraction of (35-55):(65-45). Preferably, the multimodal polyethylene has a viscosity at a shear stress of 2.7 kPa (null2.7 kPa ) of 260-450 kPa.s; and a shear thinning index (SHI) defined as the ratio of the viscosities at shear stresses of 2.7 and 210 kPa, respectively, of SHI2 7/210null50-150, and a storage modulus (Gnull) at a loss modulus (Gnull) of 5 kPa, of Gnull5 kPanull3000 Pa. The pipe is made of the multimodal polymer composition and withstands a stress of 8.0 MPa gauge during 50 years at 20null C. (MRS8.0). Preferably, the pipe has a rapid crack propagation (RCP) S4-value, determined according to ISO 13477:1997(E), of null5null C. or lower and a slow crack propagation resistance, determined according to ISO 13479:1997, of at least 500 hrs at 4.6 MPa/80null C. The polymer composition affords good non-sagging properties to pipe made thereof.

    Abstract translation: 公开了一种用于管道的多峰聚合物组合物以及由其制成的管。 聚合物是密度为0.930-0.965g / cm3的多峰聚乙烯，剪切应力为747Pa（eta747Pa）下的粘度为至少650Pa.s，所述多峰聚乙烯包含低分子量（LMW）乙烯 均聚物级分和高分子量（HMW）乙烯共聚物级分，所述HMW级分的LMW级分与HMW级分的重量比为（35-55）：（65-45）。 优选地，多峰聚乙烯在剪切应力为2.7kPa（eta2.7kPa）下的粘度为260-450kPa·s; 和剪切稀化指数（SHI），其分别定义为SHI2 7/210 = 50-150的剪切应力分别为2.7和210kPa的粘度比，以及损耗模量下的储能模量（G'） ''）为5kPa，G'5kPa> = 3000Pa。该管由多峰聚合物组合物制成，并且在20℃下在50年内经受8.0MPa表压的应力（MRS8.0）。 优选地，管具有根据ISO 13477：1997（E）确定的-5℃或更低的快速裂纹扩展（RCP）S4值，并且根据ISO 13479：1997确定的缓慢的抗裂纹扩展性， 在4.6MPa / 80℃下至少500小时。聚合物组合物为其制成的管制得到良好的不下垂性能。

    CATALYST COMPOSITION
    13.
    发明申请
    CATALYST COMPOSITION 有权
    催化剂组合物

    公开(公告)号：US20020026012A1

    公开(公告)日：2002-02-28

    申请号：US09871735

    申请日：2001-06-04

    Inventor： Stefan Mecking

    IPC: C08L023/04 ,  C08L023/06 ,  C08L023/08

    CPC classification number: C08F10/00 ,  C08F4/65912 ,  C08F4/65925 ,  C08F2410/04 ,  C08F4/61904 ,  C08F4/7006

    Abstract: A catalyst composition comprises at least two different polymerization catalysts of which a) at least one is a polymerization catalyst based on an early transition metal component and b) at least one is a polymerization catalyst based on a late transition metal component.

    Abstract translation: 催化剂组合物包含至少两种不同的聚合催化剂，其中a）至少一种是基于早期过渡金属组分的聚合催化剂，和b）至少一种是基于后期过渡金属组分的聚合催化剂。

    Propylene-ethylene block copolymer compositions and processes for production thereof
    14.
    发明申请
    Propylene-ethylene block copolymer compositions and processes for production thereof 失效

    公开(公告)号：US20010021732A1

    公开(公告)日：2001-09-13

    申请号：US09764384

    申请日：2001-01-19

    Applicant: Chisso Corporation

    Inventor： Minoru Terano ,  Takahiro Oka ,  Nobutoshi Komori ,  Tetsuya Matsukawa

    IPC: C08L001/00 ,  C08L053/00 ,  C08L023/04

    CPC classification number: C08L23/10 ,  C08L53/00 ,  C08L2666/24

    Abstract: A propylene-ethylene block copolymer composition is disclosed which comprises 0.01 to 10% by weight of an A-B type propylene-ethylene block copolymer (C) consisting essentially of a polypropylene segment (A) and an ethylene-propylene random copolymer segment (B), and 99.99 to 90% by weight of a propylene polymer (D), wherein the A-B type propylene-ethylene block copolymer (C) comprises 5 to 80% by weight of the ethylene-propylene random copolymer segment (B) having an ethylene content of 10 to 90% by weight and the propylene polymer (D) comprises 60 to 95% by weight of a homopolymer of propylene or a copolymer of propylene containing a copolymerizable monomer therewith (D1) and 40 to 5% by weight of an ethylene-propylene random copolymer (D2).

    Soft touch polyolefin compositions
    16.
    发明申请
    Soft touch polyolefin compositions 失效
    软接触聚烯烃组合物

    公开(公告)号：US20040249080A1

    公开(公告)日：2004-12-09

    申请号：US10457753

    申请日：2003-06-09

    Inventor： Manivakkam J. Shankernarayanan ,  Christopher M. Dickerson

    IPC: C08L023/00 ,  C08L023/04

    CPC classification number: C08L23/10 ,  C08L23/16 ,  C08L2666/06

    Abstract: The present invention provides a soft touch soft touch thermoplastic olefin composition. The soft touch thermoplastic olefin composition comprises a polypropylene-ethylene copolymer and a cross-linked or uncross-linked ethylene-propylene thermoplastic elastomer. The thermoplastic elastomer is present in a sufficient amount that the soft touch thermoplastic olefin composition has a 1% flexural secant modulus from about from about 10,000 psi to about 80,000 psi.

    Abstract translation: 本发明提供一种软触摸软触摸热塑性烯烃组合物。 软触摸热塑性烯烃组合物包含聚丙烯 - 乙烯共聚物和交联或未交联的乙烯 - 丙烯热塑性弹性体。 热塑性弹性体以足够的量存在，使得软接触热塑性烯烃组合物具有约10,000psi至约80,000psi的1％弯曲割线模量。

    Resin compositions and use of the same
    17.
    发明申请
    Resin compositions and use of the same 失效
    树脂组合物及其用途

    公开(公告)号：US20040186237A1

    公开(公告)日：2004-09-23

    申请号：US10765903

    申请日：2004-01-29

    Applicant: Mitsui Chemicals, Inc.

    Inventor： Mamoru Kagami ,  Yasuo Tanaka ,  Masahiro Sugi

    IPC: C08L023/00 ,  C08L023/04

    CPC classification number: C08J5/18 ,  C08J2323/04 ,  C08L23/04 ,  C08L23/0815 ,  C08L2205/02 ,  C08L2205/025 ,  C08L2314/06 ,  C08L2666/04 ,  C08L2666/06

    Abstract: A soft resin composition of the present invention comprises a polyethylene resin (A) and an ethylene/null-olefin random copolymer (B) comprising ethylene and an null-olefin having 3 to 20 carbon atoms at a specific proportion, wherein an MFR and density of the polyethylene resin (A), and a density, intrinsic viscosity, glass transition temperature, crystallinity, molecular weight distribution, B value and gnull* values of the copolymer (B) are each in a specific range. The soft resin composition is excellent in melt flow characteristics, namely excellent in moldability, and is capable of providing moldings excellent in balance between pliability and heat resistance. An ethylene/null-olefin copolymer resin composition of the present invention comprises a liner ethylene/null-olefin copolymer (A-null) comprising ethylene and an null-olefin having 4 to 20 carbon atoms and a long-chain branched ethylene/null-olefin random copolymer (B-null) comprising ethylene and an null-olefin having 3 to 20 carbon atoms in a specific proportion, wherein a density and melt flow rate of the copolymer (A-null) and a density, MFR, intrinsic viscosity, glass transition temperature, crystallinity, molecular weight distribution, B value and gnull* values of the copolymer (B-null) are each in a specific range. A film of the invention is produced from the resin composition. The ethylene/null-olefin copolymer resin composition is excellent in heat stability and suitability for high-speed molding, and can provide the films excellent in mechanical strength properties, low temperature heat-sealing properties and sealing stability, and further in slip characteristics and anti-blocking properties thereby being excellent in handling properties and suitability for high-speed filling upon packaging by automatic filling machines. The film also exhibits the effect as described above.

    Abstract translation: 本发明的软质树脂组合物包含聚乙烯树脂（A）和包含乙烯和碳原子数为3〜20的α-烯烃的特定比例的乙烯/α-烯烃无规共聚物（B），其中MFR和密度 的聚乙烯树脂（A），共聚物（B）的密度，特性粘度，玻璃化转变温度，结晶度，分子量分布，B值和geta *值分别在特定范围内。 软质树脂组合物的熔体流动特性优异，成型性优异，并且能够提供在柔软性和耐热性之间平衡优异的模制品。 本发明的乙烯/α-烯烃共聚物树脂组合物包含含有乙烯和碳原子数为4〜20的α-烯烃和长链支化乙烯/α-烯烃共聚物的内衬乙烯/α-烯烃共聚物（A-α） 烯烃无规共聚物（B-α），其特征在于，所述共聚物（A-α）的密度和熔体流动速率和MFR，特性粘度， 共聚物（B-α）的玻璃化转变温度，结晶度，分子量分布，B值和geta *值各自在特定范围内。 本发明的薄膜由树脂组合物制成。 乙烯/α-烯烃共聚物树脂组合物的热稳定性和高速成型的适用性优异，可以提供机械强度特性，低温热封性，密封稳定性优异的薄膜，以及滑动特性和抗反射性 阻挡性能，因此在自动灌装机的包装时具有优异的操作性能和适用于高速填充的适用性。 该膜还具有如上所述的效果。

    COMPOSITION FOR MOLDING THIN-WALLED PARTS, AND INJECTION-MOLDED SQUEEZE TUBE MADE THEREOF
    18.
    发明申请
    COMPOSITION FOR MOLDING THIN-WALLED PARTS, AND INJECTION-MOLDED SQUEEZE TUBE MADE THEREOF 失效
    用于模制薄壁部件的组合物和其注射成型的管状管

    公开(公告)号：US20040087723A1

    公开(公告)日：2004-05-06

    申请号：US10285261

    申请日：2002-10-31

    Applicant: Sonoco Development, Inc.

    Inventor： Alan D. Williams ,  James Stevens ,  Jeremy Morin

    IPC: C08L023/00 ,  C08L023/04

    CPC classification number: B65D35/08 ,  C08L23/06 ,  C08L23/10 ,  Y10T428/13 ,  C08L2666/06

    Abstract: Compositions for injection-molding of long, thin-walled, one-piece squeeze tubes include low-density polyethylene having a density less than about 0.925 g/cc and a melt index of at least about 50 g/10 minutes, and polypropylene having a high melt index greater than about 800 g/10 minutes, wherein the high melt index is attained by peroxide degradation of the polypropylene during melt processing. The compositions can also include a polymer that is miscible and compatible with low-density polyethylene and polypropylene for enhancing flow of the molding composition in the mold, the polymer having a glass transition temperature Tg of about null20 to null40null C, and/or a metallocene resin having a density less than about 0.915 g/cc.

    Abstract translation: 用于注射成型长，薄壁，一体式挤压管的组合物包括密度小于约0.925g / cc和熔体指数为至少约50g / 10分钟的低密度聚乙烯，以及具有 高熔体指数大于约800g / 10分钟，其中高熔体指数通过熔融加工过程中聚丙烯的过氧化物降解而达到。 组合物还可以包括与低密度聚乙烯和聚丙烯是可混溶的并且与低密度聚乙烯和聚丙烯相容的聚合物，用于增加模具中模塑组合物的流动，聚合物的玻璃化转变温度Tg为约-20至-40℃，和/ 或密度小于约0.915g / cc的茂金属树脂。

    Clear impact-resistant syndiotactic polypropylene
    19.
    发明申请
    Clear impact-resistant syndiotactic polypropylene 失效
    透明抗冲击间同立构聚丙烯

    公开(公告)号：US20040034167A1

    公开(公告)日：2004-02-19

    申请号：US10222552

    申请日：2002-08-15

    Inventor： Joseph M. Schardl ,  Likuo Sun ,  Alan S. Baumgartner ,  Kevin Boyle ,  Greg Dekunder

    IPC: C08L023/00 ,  C08L023/04

    CPC classification number: C08L23/12 ,  C08L23/0815 ,  C08L23/142 ,  C08L2205/03 ,  C08L2666/06

    Abstract: Syndiotactic polypropylene blends having a unique set of mechanical properties may be prepared by blending syndiotactic polypropylene with an ultra low density polyethylene and, optionally, an isotactic polypropylene random copolymer. The syndiotactic polypropylene blends of the present invention have been found to have improved impact strength, reduced haze, increased light transmittance, and reduced flexural modulus. It has been determined that the addition of about 10 to about 50 wt % of an ultra low density polyethylene plastomer to a syndiotactic polypropylene can greatly enhance mechanical toughness, particularly at low temperatures, while maintaining good optical clarity. These results are made possible by using a sPP material with good optical clarity and dispersing the ULDPE plastomer uniformly throughout the sPP matrix to act as a sort of impact modifier. Moreover, the addition of about 10 to about 50 wt % of an iPP random copolymer to the sPP matrix phase provides comparable or improved mechanical properties while also resulting in a significant reduction in injection molding cycle times. The syndiotactic polypropylene blends according to the present invention may be further processed according to accepted practices to make cast films, blown films, co-extruded films, laminated sheets, injection molded parts, blow molded containers, and other articles using basic plastic fabrication techniques as known in the art.

    Abstract translation: 具有独特机械性能的间同立构聚丙烯共混物可以通过将间同立构聚丙烯与超低密度聚乙烯和任选的全同立构聚丙烯无规共聚物共混来制备。 已经发现本发明的间同立构聚丙烯共混物具有改善的冲击强度，降低的雾度，增加的透光率和降低的弯曲模量。 已经确定，将约10至约50重量％的超低密度聚乙烯塑性体添加到间同立构聚丙烯可以极大地增强机械韧性，特别是在低温下，同时保持良好的光学透明度。 通过使用具有良好光学透明度的sPP材料并将ULDPE塑性体均匀地分散在整个sPP基体中作为一种抗冲改性剂，可以实现这些结果。 此外，向sPP基体相添加约10至约50重量％的iPP无规共聚物可提供相当或改进的机械性能，同时也导致注塑周期时间的显着降低。 根据本发明的间同立构聚丙烯共混物可以根据公认的做法进一步加工，以使用基本的塑料制造技术制造流延膜，吹塑薄膜，共挤出薄膜，层压片，注模部件，吹塑容器和其它制品， 本领域已知

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