Crystalline polymers of propylene having improved processability in the molten state and process for their preparation
    1.
    发明授权
    Crystalline polymers of propylene having improved processability in the molten state and process for their preparation 失效
    丙烯的结晶聚合物在熔融状态下具有改进的加工性能及其制备方法

    公开(公告)号:US07332556B2

    公开(公告)日:2008-02-19

    申请号:US11385711

    申请日:2006-03-22

    IPC分类号: C08F110/06

    摘要: Crystalline polymers and copolymers of propylene having total MIL values>2 g/10 minutes, total [η] values in tetrahydronaphthalene at 135° C.≦2.8 dl/g, mW/MN values>20, a fraction insoluble in xylene at 25° C.≧94, and including from 10 to 60% by weight of a fraction (A) having [η]≧2.6, are prepared by way of sequential polymerization in at least two stages, in the presence of a particular Ziegler-Natta catalysts supported on magnesium halides. These polymers have high melt strength, high mechanical properties, and are particularly adequate for the manufacture of articles by using various conversion technologies, such as for example extrusion in thin sheets to be subjected to thermoforming, as well as for injection molding, and blow molding.

    摘要翻译: 总共MIL值> 2g / 10分钟的丙烯结晶聚合物和共聚物,四氢化萘在135℃时的总η= 2.8dl / g,mW / MN值> 20,在25℃下不溶于二甲苯的级分 °C = 94,并且包括10至60重量%的具有η= 2.6的级分(A),通过在至少两个阶段中的顺序聚合,在特定的齐格勒(Ziegler)的存在下制备 -Natta催化剂负载在卤化镁上。 这些聚合物具有高熔体强度,高机械性能,并且特别适用于通过使用各种转化技术制造制品,例如在薄片中挤出以进行热成型,以及用于注射成型和吹塑 。

    Crystalline polymers of propylene having improved processability in the molten state and process for their preparation
    2.
    发明申请
    Crystalline polymers of propylene having improved processability in the molten state and process for their preparation 失效
    丙烯的结晶聚合物在熔融状态下具有改进的加工性能及其制备方法

    公开(公告)号:US20060160963A1

    公开(公告)日:2006-07-20

    申请号:US11385711

    申请日:2006-03-22

    IPC分类号: C08G85/00

    摘要: Crystalline polymers and copolymers of propylene having total MIL values>2 g/10 minutes, total [η] values in tetrahydronaphthalene at 135° C.≦2.8 dl/g, Mw/Mn values>20, a fraction insoluble in xylene at 25° C.≧94, and including from 10 to 60% by weight of a fraction (A) having [η]≧2.6, are prepared by way of sequential polymerization in at least two stages, in the presence of a particular Ziegler-Natta catalysts supported on magnesium halides. These polymers have high melt strength, high mechanical properties, and are particularly adequate for the manufacture of articles by using various conversion technologies, such as for example extrusion in thin sheets to be subjected to thermoforming, as well as for injection molding, and blow molding.

    摘要翻译: 总共MIL值> 2g / 10分钟的丙烯的结晶聚合物和共聚物,四氢化萘在135℃下的总η= 2.8dl / g,Mw / Mn值> 20,在25℃下不溶于二甲苯的级分 °C = 94,并且包括10至60重量%的具有η= 2.6的级分(A),通过在至少两个阶段中的顺序聚合,在特定的齐格勒(Ziegler)的存在下制备 -Natta催化剂负载在卤化镁上。 这些聚合物具有高熔体强度,高机械性能,并且特别适用于通过使用各种转化技术制造制品,例如在薄片中挤出以进行热成型,以及用于注射成型和吹塑 。

    Crystalline polymers of propylene having improved processability in the molten state and process for their preparation
    3.
    发明授权
    Crystalline polymers of propylene having improved processability in the molten state and process for their preparation 失效
    丙烯的结晶聚合物在熔融状态下具有改进的加工性能及其制备方法

    公开(公告)号:US07074871B2

    公开(公告)日:2006-07-11

    申请号:US10361569

    申请日:2003-02-11

    IPC分类号: C08F110/06

    摘要: Crystalline polymers and copolymers of propylene having total MIL values>2 g/10 minutes, total [η] values in tetrahydronaphthalene at 135° C.≦2/8 dl/g, Mw/Mn values>20, a fraction insoluble in xylene at 25° C.≧94, and including from 10 to 60% by weight of a fraction (A) having [η]≧2.6, are prepared by way of sequential polymerization in at least two stages, in the presence of particular Ziegler-Natta catalysts supported on magnesium halides. These polymers have high melt strength, high mechanical properties, and are particularly adequate for the manufacture of articles by using various conversion technologies, such as for example extrusion in thin sheets to be subjected to thermoforming, as well as for injection molding, and blow molding.

    摘要翻译: 总共MIL值> 2g / 10分钟的丙烯的结晶聚合物和共聚物,在四氢化萘中135℃时的总η= 2 / 8dl / g,Mw / Mn值> 20,不溶于二甲苯的级分 在25℃下,≥94,并且包括10至60重量%的具有η= 2.6的级分(A),通过在至少两个阶段中的顺序聚合制备,在特定的存在下 齐格勒 - 纳塔催化剂负载在卤化镁上。 这些聚合物具有高熔体强度,高机械性能,并且特别适用于通过使用各种转化技术制造制品,例如在薄片中挤出以进行热成型,以及用于注射成型和吹塑 。

    Polypropylene compositions having good transparency and improved impact
resistance
    4.
    发明授权
    Polypropylene compositions having good transparency and improved impact resistance 失效
    具有良好的透明性和耐冲击性的聚丙烯组合物

    公开(公告)号:US5541260A

    公开(公告)日:1996-07-30

    申请号:US399959

    申请日:1995-03-06

    摘要: Disclosed is a polymer composition containing:(A) from 70 to 98 parts by weight of a crystalline propylene homopolymer, or a crystalline random copolymer of propylene with ethylene and/or C.sub.4 -C.sub.10 .alpha.-olefins, containing from 0.5 to 10% by weight of ethylene and/or .alpha.-olefins [fraction (A)]; and(B) from 2 to 30 parts by weight of elastomeric copolymer of ethylene with one or more C.sub.4 -C.sub.10 .alpha.-olefins, containing from 60 to 85% by weight of ethylene, and partially soluble in xylene at 25.degree. C. [fraction (B)];wherein the composition has an intrinsic viscosity value in tetrahydronaphthalene at 135.degree. C. of the fraction soluble in xylene at 25.degree. C. ranging from 0.8 to 1.1 dl/g.

    摘要翻译: 公开了一种聚合物组合物,其包含:(A)70至98重量份的结晶丙烯均聚物,或丙烯与乙烯和/或C 4 -C 10α-烯烃的结晶无规共聚物,其含有0.5至10重量% 的乙烯和/或α-烯烃[级分(A)]; 和(B)2-30重量份的乙烯与一种或多种C 4 -C 10α-烯烃的弹性体共聚物,其含有60至85重量%的乙烯,并且部分可溶于25℃的二甲苯中。 (B)]; 其中所述组合物在135℃下在四氢萘中在25℃下可溶于二甲苯的级分的特性粘度值为0.8-1.1dl / g。

    Compositions of crystalline propylene polymers having a low seal
temperature
    7.
    发明授权
    Compositions of crystalline propylene polymers having a low seal temperature 失效
    具有低密封温度的结晶丙烯聚合物的组合物

    公开(公告)号:US5296548A

    公开(公告)日:1994-03-22

    申请号:US763695

    申请日:1991-09-23

    摘要: Discosed are compositions of crystalline propylene polymers comprising (by weight):A) 30-65% of a copolymer of propylene with a C.sub.4 -C.sub.8 .alpha.-olefin, containing from 98 to 80% propylene;B) 35-70% of a copolymer of propylene with ethylene and optionally from 2 to 10% of a C.sub.4 -C.sub.8 .alpha.-olefin, said copolymer containing 2 to 10% ethylene when the C.sub.4 -C.sub.8 .alpha.-olefin is not present, and 0.5 to 5% ethylene when the C.sub.4 -C.sub.8 .alpha.-olefin is present.

    摘要翻译: 所述的结晶丙烯聚合物的组合物包含(按重量计):A)30-65%的丙烯与含有98-80%丙烯的C 4 -C 8(α-) - 烯烃的共聚物; B)35-70%的丙烯与乙烯和任选的2至10%的C 4 -C 8(α) - 烯烃的共聚物,当C4-C8(α) - 烯烃是含有2-10%乙烯的共聚物是 不存在,当存在C4-C8(α) - 烯烃时为0.5〜5%的乙烯。