Ethylene/dicyclopentadiene/norbornene terpolymer materials having desirable structural and thermal properties
    11.
    发明申请
    Ethylene/dicyclopentadiene/norbornene terpolymer materials having desirable structural and thermal properties 审中-公开
    乙烯/二环戊二烯/降冰片烯三元共聚物材料具有理想的结构和热性能

    公开(公告)号:US20080221275A1

    公开(公告)日:2008-09-11

    申请号:US12074213

    申请日:2008-02-29

    摘要: Provided are selected types of terpolymer components comprising terpolymers having monomer units derived from ethylene (E), dicyclopentadiene (DCPD) and norbornene-based (NB) co-monomers. Such terpolymer components have certain specified amounts of each co-monomer as well as certain specified molecular weight and glass transition temperature characteristics. Terpolymer components which are derivatized by hydrogenation and/or by epoxidation and/or hydroxylation are also disclosed, as well as thermoplastic polyolefin compositions which contain the terpolymer components and which have especially desirable structural and thermal properties.Also provided are processes for preparing and derivatizing the terpolymer components herein. Such preparation processes comprise: a) contacting ethylene with a polymerization mixture comprising selected amounts of both DCPD and NB co-monomers, in the presence of a selected activated cyclopentadienyl-fluorenyl metallocene catalyst under specific polymerization conditions to thereby form the desired ethylene-dicyclopentadiene-norbornene terpolymer components within the polymerization mixture. These terpolymer components can then be subsequently derivatized by hydrogenation or functionalization of the residual double bonds therein.

    摘要翻译: 提供了包含来自乙烯(E),二环戊二烯(DCPD)和降冰片烯基(NB))共聚单体的单体单元的三元共聚物的选择类型的三元共聚物组分。 这些三元共聚物组分具有特定量的每种共聚单体以及某些特定的分子量和玻璃化转变温度特性。 还公开了通过氢化和/或通过环氧化和/或羟基化衍生化的三元共聚物组分,以及含有三元共聚物组分并且具有特别期望的结构和热性质的热塑性聚烯烃组合物。 还提供了用于制备和衍生本文中三元共聚物组分的方法。 这样的制备方法包括:a)在选择的活化的环戊二烯基 - 芴基茂金属催化剂存在下,在特定的聚合条件下,使乙烯与包含选定量的DCPD和NB共聚单体的聚合混合物接触,从而形成所需的乙烯 - 二环戊二烯 - 降冰片烯三元共聚物组分在聚合混合物内。 然后可以通过氢化或官能化其中的残余双键将这些三元共聚物组分衍生化。

    Heterogeneous in-reactor polymer blends
    12.
    发明授权
    Heterogeneous in-reactor polymer blends 有权
    不均匀的反应器内聚合物共混物

    公开(公告)号:US08106127B2

    公开(公告)日:2012-01-31

    申请号:US12638861

    申请日:2009-12-15

    摘要: An in-reactor polymer blend comprises (a) a propylene-containing first polymer; and (b) an ethylene-containing second polymer such that the polymer blend comprises between about 50 wt % and about 80 wt % units derived from ethylene and between about 50 wt % and about 20 wt % units derived from propylene. The blend is substantially free of dienes and the content of ethylene in the second polymer in the form of ethylene-ethylene-ethylene triads is at least 40%. The second polymer contains at least 0.1 branch having 8 or more carbon atoms per 10,000 carbons. In addition, the blend has a strain hardening index of at least 1.8, a shear thinning slope in the plot of log(dynamic viscosity) versus log(frequency) of less than −0.2 and exhibits at least two peaks when subjected to Differential Scanning Calorimetry (first melt) corresponding to a first melting point of at least 150° C. and a second melting point of at least 40° C. such that the difference between the first and second melting temperatures is at least 20° C.

    摘要翻译: 反应器内聚合物共混物包含(a)含丙烯的第一聚合物; 和(b)含乙烯的第二聚合物,使得聚合物共混物包含衍生自乙烯的约50重量%至约80重量%的单元和衍生自丙烯的约50重量%至约20重量%的单元。 共混物基本上不含二烯,乙烯 - 乙烯 - 乙烯三单元组形式的第二聚合物中的乙烯含量至少为40%。 第二聚合物含有至少0.1个分支,每10,000个碳原子具有8个或更多个碳原子。 此外,共混物的应变硬化指数为至少1.8,对数(动态粘度)对log(频率)的曲线图中的剪切变稀斜率小于-0.2,并且当进行差示扫描量热法时显示出至少两个峰 (第一熔体),其对应于至少150℃的第一熔点和至少40℃的第二熔点,使得第一和第二熔融温度之间的差异为至少20℃。