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    CROSSLINKABLE POLYMERIC COMPOSITIONS FOR FLEXIBLE CROSSLINKED CABLE INSULATION AND METHODS FOR MAKING FLEXIBLE CROSSLINKED CABLE INSULATION
    1.
    发明公开
    CROSSLINKABLE POLYMERIC COMPOSITIONS FOR FLEXIBLE CROSSLINKED CABLE INSULATION AND METHODS FOR MAKING FLEXIBLE CROSSLINKED CABLE INSULATION 审中-公开

    公开(公告)号：EP3368602A1

    公开(公告)日：2018-09-05

    申请号：EP16788612.6

    申请日：2016-10-13

    申请人： Dow Global Technologies, LLC

    发明人： CHAUDHARY, Bharat I. ,  WICKHAM, Rennisha ,  HUGHES, Morgan M. ,  TUBERQUIA, Juan C.

    IPC分类号： C08L23/04 ,  C08L23/06 ,  C08L23/08 ,  C08L23/16

    摘要： Crosslinkable polymeric compositions comprising: (a) a polymer blend comprising: (1) 10 to 94 weight percent, based on the total weight of the crosslinkable polymeric composition, of an ethylene-based interpolymer having the following properties: (i) a density of 0.93 g/cm3 or less, (ii) a melt index (I2) at 190° C. of greater than 0.2 g/10 minutes, and (iii) a shear thinning ratio (V0.1/V100) at 190° C. and 10% strain of less than 8; and (2) 5 to 90 weight percent, based on the total weight of the crosslinkable polymeric composition, of a high-pressure polyethylene; and (b) 0 to less than 40 weight percent, based on the total weight of the crosslinkable polymeric composition, of a filler, where the ethylene-based interpolymer of component (a) is not prepared in a high-pressure reactor or process. Additionally, the polymer blend has the following properties: (i) a shear thinning ratio (V0.1/V100) at 190° C. and 10% strain of at least 5, (ii) a high-shear viscosity (V100) at 190 C and 10% strain of less than 1,300 Pa·s, (iii) a melt strength of at least 4 centiNewtons at 190° C., and (iv) a flexural modulus, 2% secant, of less than 25,000 psi. Such crosslinkable polymeric compositions may be employed as insulation layers in flexible power cables.

    NUCLEATION WITH A BLOCK COMPOSITE NUCLEATOR
    8.
    发明公开
    NUCLEATION WITH A BLOCK COMPOSITE NUCLEATOR 审中-公开
    与块复合核成核

    公开(公告)号：EP3183297A1

    公开(公告)日：2017-06-28

    申请号：EP15759992.9

    申请日：2015-08-20

    申请人： Dow Global Technologies LLC

    发明人： JIN, Yi ,  WALTON, Kim L. ,  HUGHES, Morgan M. ,  KARJALA, Thomas W. ,  CHOPIN III, Lamy J. ,  LEE, Dean ,  CONG, Rongjuan

    IPC分类号： C08L23/14

    CPC分类号： C08L23/16 ,  C08L23/142 ,  C08L2205/025 ,  C08L2205/035 ,  C08L2205/24 ,  C08L53/00

    摘要： A composition includes (A) 30-95 wt % of a random or homogeneous propylene-based interpolymer having: (i) a comonomer content of at least one of C2 and C4-10 α-olefins of 7 wt % to 49 wt % based on the total weight of the propylene-based interpolymer, (ii) a density of 0.90 g/cc or less, and (iii) an MFR of 1 g/10 min or greater (230° C./2.16 kg); and (B) 5-70 wt % of a block composite nucleator comprising: (1) a first polymer that includes polypropylene; (2) a second polymer that includes an alpha-olefin based polymer, the alpha-olefin being selected from at least one of a C2 and C4-10 α-olefins, and (3) a block copolymer having a first segment and a second segment, the first segment of the block copolymer having the same composition as the first polymer in the block composite nucleator and the second segment of the block copolymer having the same composition as the second polymer of the block composite nucleator.

    摘要翻译： 一种组合物包括：（A）30-95wt％的无规或均相基于丙烯的共聚体，其具有：（i）基于7wt％至49wt％的C 2和C 4-10α-烯烃中至少一种的共聚单体含量 （ii）密度为0.90g / cc或更小，和（iii）1g / 10min或更大（230℃/ 2.16kg）的MFR; 和（B）5-70重量％的嵌段复合成核剂，其包含：（1）包含聚丙烯的第一聚合物; （2）包含α-烯烃基聚合物的第二聚合物，所述α-烯烃选自C2和C4-10α-烯烃中的至少一种，和（3）具有第一链段和第二链段的嵌段共聚物 段，嵌段共聚物的第一段具有与嵌段复合成核剂中的第一聚合物相同的组成，并且嵌段共聚物的第二段具有与嵌段复合成核剂的第二聚合物相同的组成。