LLDPE-based stretchable multilayer films
    4.
    发明授权
    LLDPE-based stretchable multilayer films 失效
    基于LLDPE的可拉伸多层膜

    公开(公告)号:US5972486A

    公开(公告)日:1999-10-26

    申请号:US747684

    申请日:1996-11-12

    摘要: Stretchable multilayer films in which at least one layer comprises:a) a linear low density polyethylene (LLDPE),b) a copolymer of propylene with ethylene and/or with one or more .alpha.-olefins CH.sub.2 .dbd.CHR.sup.I, in which R.sup.I is an alkyl radical having from 2 to 10 carbon atoms, this copolymer being of relatively high insolubility in xylene; andc) a low density polyethylene (LDPE).The said films, which have improved optical and mechanical properties, are particularly suitable for use in the packaging sector.

    摘要翻译: 其中至少一层包括:a)线性低密度聚乙烯(LLDPE),b)丙烯与乙烯和/或与一种或多种α-烯烃CH 2 = CHR 3的共聚物,其中R 1是烷基 具有2至10个碳原子的基团,该共聚物在二甲苯中具有相对高的不溶性; 和c)低密度聚乙烯(LDPE)。 所述具有改善的光学和机械性能的膜特别适用于包装领域。

    Stretchable multilayer films
    5.
    发明授权
    Stretchable multilayer films 失效
    可拉伸多层膜

    公开(公告)号:US6010772A

    公开(公告)日:2000-01-04

    申请号:US747913

    申请日:1996-11-12

    摘要: Stretchable multilayer films in which at least one layer (A) thereof comprises a copolymer (I) of ethylene with one or more .alpha.-olefins CH.sub.2 .dbd.CHR, having a density of between 0.88 and 0.945 g/cm.sup.3, a melt index of from 0.1 to 10 g/10' and containing up to 20 mol % of .alpha.-olefin CH.sub.2 .dbd.CHR (LLDPE), and at least one layer (B) comprises a heterophasic polyolefin composition having:(a) 20-100 parts by weight of a fraction which is insoluble in xylene at room temperature, comprising a propylene homopolymer or a copolymer of propylene with ethylene and/or another .alpha.-olefin CH.sub.2 .dbd.CHR.sup.I, this fraction containing more than 85% by weight of units derived from propylene; and (b) 30-80 parts by weight of a fraction which is soluble in xylene at room temperature, comprising an amorphous copolymer of ethylene with propylene and/or another .alpha.-olefin CH.sub.2 .dbd.CHR.sup.I, this fraction optionally containing smaller proportions of a diene and containing more than 15% by weight of units derived from ethylene.

    摘要翻译: 可拉伸多层膜,其中至少一层(A)包含乙烯与一种或多种α-烯烃CH 2 = CHR的共聚物(I),密度为0.88-0.945g / cm 3,熔体指数为0.1 至10g / 10',并含有至多20mol%的α-烯烃CH 2 = CHR(LLDPE),并且至少一层(B)包含多相聚烯烃组合物,其具有:(a)20-100重量份的 包含丙烯均聚物或丙烯与乙烯和/或另一种α-烯烃CH2 = CHRI的共聚物的馏分,该馏分含有大于85重量%的衍生自丙烯的单元; 和(b)30-80重量份在室温下可溶于二甲苯的级分,其包含乙烯与丙烯和/或另一种α-烯烃CH 2 = CHRI的无定形共聚物,该级分任选地含有较少比例的二烯 并含有大于15重量%的衍生自乙烯的单元。

    Highly processable polymeric compositions based on LLDPE
    6.
    发明授权
    Highly processable polymeric compositions based on LLDPE 失效
    基于LLDPE的高度可加工的聚合物组合物

    公开(公告)号:US5561195A

    公开(公告)日:1996-10-01

    申请号:US376024

    申请日:1995-01-20

    摘要: Polymeric compositions based on Linear Low Density Polyethylene (LLDPE) comprising: (A) from 75 to 95% by weight of an ethylene copolymer with an .alpha.-olefin CH.sub.2 =CHR, wherein R is an alkyl radical having from 1 to 10 carbon atoms, and (B) from 5 to 25% by weight of a copolymer of propylene with ethylene and an .alpha.-olefin CH.sub.2 =CHR.sup.I, wherein R.sup.I is an alkyl radical having from 2 to 10 carbon atoms. Copolymer (B) is characterised by a relatively high insolubility in xylene. The polymeric compositions of the invention are endowed with improved processability and improved mechanical properties with respect to the LLDPE of the conventional type.

    摘要翻译: 基于线性低密度聚乙烯(LLDPE)的聚合物组合物包含:(A)75至95重量%的具有α-烯烃CH 2 = CHR的乙烯共聚物,其中R为具有1至10个碳原子的烷基, 和(B)5至25重量%的丙烯与乙烯和α-烯烃CH2 = CHRI的共聚物,其中RI是具有2至10个碳原子的烷基。 共聚物(B)的特征在于二甲苯中相对较高的不溶性。 本发明的聚合物组合物具有相对于常规类型的LLDPE的改进的加工性能和改善的机械性能。