High-density polyethylene compositions, method of producing the same, closure devices made therefrom, and method of making such closure devices
    22.
    发明授权
    High-density polyethylene compositions, method of producing the same, closure devices made therefrom, and method of making such closure devices 有权
    高密度聚乙烯组合物,其制造方法,由其制成的封闭装置以及制造这种闭合装置的方法

    公开(公告)号:US09056970B2

    公开(公告)日:2015-06-16

    申请号:US13144465

    申请日:2010-01-27

    摘要: The instant invention is a high-density polyethylene composition, method of producing the same, closure devices made therefrom, and method of making such closure devices. The high-density polyethylene composition according to the present invention comprises (a) a first component comprising a high molecular weight ethylene alpha-olefin copolymer having a density in the range of 0.927 to 0.938 g/cm3, and a melt flow rate (I21) in the range of 4 to 10 g/10 minutes, and (b) a second component comprising a low molecular weight ethylene polymer having a density in the range of 0.960 to 0.975 g/cm3, and a melt index (I2) in the range of 100 to 1200 g/10 minutes; and wherein the high-density polyethylene composition has a melt index (I2) in the range of from 2 to 10 g/10 minutes, a density in the range of from 0.950 to 0.960 g/cm3, and a flow direction shrinkage to cross flow direction shrinkage ratio in the range of from 2 to 3.2, and an environmental stress crack resistance (ESCR) (F50) according to ASTM D-1693, condition B at 50° C., and using 10 percent Branched Octylphenoxy Poly(Ethyleneoxy) Ethanol, in the range of equal to or greater than 50 hours.

    摘要翻译: 本发明是高密度聚乙烯组合物,其制造方法,由其制成的封闭装置,以及制造这种闭合装置的方法。 根据本发明的高密度聚乙烯组合物包含(a)包含密度在0.927至0.938g / cm 3范围内的高分子量乙烯α-烯烃共聚物和熔体流动速率(I21)的第一组分, 在4至10g / 10分钟的范围内,和(b)包含密度在0.960至0.975g / cm 3范围内的低分子量乙烯聚合物的第二组分和在该范围内的熔体指数(I 2) 为100〜1200g / 10分钟; 并且其中所述高密度聚乙烯组合物具有在2至10g / 10分钟范围内的熔体指数(I 2),在0.950至0.960g / cm 3范围内的密度和横向流动方向收缩 方向收缩率在2至3.2范围内,以及根据ASTM D-1693,条件B在50℃下的环境应力开裂抗力(ESCR)(F50),并使用10%支链辛基苯氧基聚(乙烯氧基)乙醇 在等于或大于50小时的范围内。

    Method for controlling chain structure of copolymer
    23.
    发明授权
    Method for controlling chain structure of copolymer 有权
    控制共聚物链结构的方法

    公开(公告)号:US08969496B2

    公开(公告)日:2015-03-03

    申请号:US13813370

    申请日:2011-07-22

    申请人: Shojiro Kaita

    发明人: Shojiro Kaita

    摘要: The present invention provides a method for controlling the chain structure of a copolymer. The disclosed method is capable of controlling the arrangement of monomeric units in a copolymer, and of selectively forming a random copolymer, tapered copolymer, multiblock copolymer and block copolymer. In the method for controlling the chain structure of a copolymer of a conjugated diene compound and a non-conjugated olefin, the introduction of the conjugated diene compound is controlled in the presence of the non-conjugated olefin so as to control the chain structure of the copolymer.

    摘要翻译: 本发明提供一种控制共聚物的链结构的方法。 所公开的方法能够控制共聚物中单体单元的排列,并且可选择性地形成无规共聚物,渐缩共聚物,多嵌段共聚物和嵌段共聚物。 在共轭二烯化合物和非共轭烯烃的共聚物的链结构控制方法中,共轭二烯化合物的引入在非共轭烯烃的存在下进行控制,从而控制 共聚物。

    Polyolefin compositions
    28.
    发明授权
    Polyolefin compositions 有权
    聚烯烃组合物

    公开(公告)号:US08378028B2

    公开(公告)日:2013-02-19

    申请号:US12735705

    申请日:2009-02-04

    摘要: Polyolefin composition, comprising in percent by weight: 1) 75-85% of a copolymer of propylene, said copolymer containing up to 15% by weight, of ethylene and/or C4-C10 α-olefin(s) and having a fraction soluble in Xilene at room temperature lower than 6% by weight, and 2) 15-25% of a copolymer of ethylene with one or more C4-C10 α-olefin(s) containing from 10 to 25% by weight of said C4-C10 α-olefin(s); said composition having the value of MFR, measured at 230° C., 2.16 kg, of less than 2.5 g/10 min, the total content of ethylene of from 14 to 22% by weight, the total content of C4-C10 α-olefin(s) of less than 4.5% by weight, the ratio of the total content of ethylene to the total content of C4-C10 α-olefin(s) equal to or higher than 4, the value of the intrinsic viscosity of the total fraction soluble in xylene at room temperature equal to or less than 1.5 dl/g, and the ratio of the amount of component 2) and the amount of C4-C10 α-olefin(s) in component 2) equal to or higher than 0.80.

    摘要翻译: 聚烯烃组合物,其包含以重量百分比计:1)75-85%的丙烯共聚物,所述共聚物含有至多15重量%的乙烯和/或C 4 -C 10α-烯烃,并且具有可溶解的馏分 在Xilene中,室温低于6重量%,和2)15-25%的乙烯与一种或多种含有10至25重量%的所述C 4 -C 10的C 4 -C 10α-烯烃的共聚物 α-烯烃; 所述组合物具有在230℃,2.16kg,小于2.5g / 10min下测量的MFR值,乙烯的总含量为14至22重量%,C 4 -C 10α-烯烃的总含量, 小于4.5重量%的烯烃,乙烯的总含量与C4-C10α-烯烃的总含量的比等于或高于4,特性粘度的值为总计 室温下可溶于二甲苯的馏分等于或小于1.5dl / g,组分2中的组分2的量与组分2中的C 4 -C 10α-烯烃的比例等于或高于0.80 。

    Propylene block copolymer and process for production thereof
    30.
    发明授权
    Propylene block copolymer and process for production thereof 有权
    丙烯嵌段共聚物及其制备方法

    公开(公告)号:US07875682B2

    公开(公告)日:2011-01-25

    申请号:US11989418

    申请日:2006-07-28

    IPC分类号: C08F297/08 C08F2/38

    摘要: Disclosed is a propylene block copolymer having excellent flexibility and impact resistance and showing a good polymer powder form. Also disclosed is a process for producing the copolymer. More specifically, the copolymer is a novel propylene block copolymer which satisfies a specific requirement and is produced by a process comprising continuously performing a multi-step polymerization composed of a former step in which a propylene homopolymer component or a specific propylene copolymer component is produced in the presence of a metallocene catalyst carried on a support and a latter step in which propylene and a specific copolymer component are produced by gas phase polymerization.

    摘要翻译: 公开了具有优异的柔韧性和耐冲击性并显示出良好的聚合物粉末形式的丙烯嵌段共聚物。 还公开了制备共聚物的方法。 更具体地说,该共聚物是满足特定要求的新型丙烯嵌段共聚物,是通过连续进行多步聚合的方法制造的,该多步聚合由前述步骤组成,其中制备丙烯均聚物组分或特定的丙烯共聚物组分 负载在载体上的金属茂催化剂的存在和后一步骤,其中通过气相聚合制备丙烯和特定的共聚物组分。