Crystalline polypropylene and its moldings and films
    1.
    发明申请
    Crystalline polypropylene and its moldings and films 失效
    结晶聚丙烯及其模制品和薄膜

    公开(公告)号:US20020028898A1

    公开(公告)日:2002-03-07

    申请号:US09963591

    申请日:2001-09-27

    IPC分类号: C08F110/06

    摘要: A first crystalline polypropylene of the present invention satisfies the relationships of the following formulae (1) and (2):nullnullnull0.42nullln(Mp)null7.3nullnull(1),andTm>1.85nullln(Mp)null144.5nullnull(2),wherein null is a 0null C. soluble content (% by weight) as measured through programmed-temperature fractionation, Mp is a peak molecular weight in a molecular weight distribution curve as measured through gel permeation chromatography, and Tm is a melting point (null C.) as measured through differential scanning calorimetry. A second crystalline polypropylene of the present invention satisfies the relationship given in the following formula (3):nullnull1.11 nullnullnullnull0.42null1.40nullnull(3)wherein null is the same as above and nullnullnull an intrinsic viscosity (dl/g) as measured in a tetralin solvent at 135null C. Moldings and films made of the first or second crystalline polypropylene are highly rigid and have good heat resistance and good scratch resistance.

    摘要翻译: 本发明的第一种结晶聚丙烯满足下列式(1)和(2)的关系:<段落lvl =“0”>(in-line-formula)>α<= - 0.42×ln(Mp)+7.3( 1),和<段落lvl =“0”> Tm> 1.85×ln(Mp)+144.5(2),其中α 是通过程序温度分馏测定的0℃可溶性含量(重量%),Mp是通过凝胶渗透色谱测定的分子量分布曲线中的峰值分子量,Tm是熔点(℃)。 )通过差示扫描量热法测量。 本发明的第二结晶聚丙烯满足下式(3)中给出的关系:<段落lvl =“0”>在线公式>α<= 1.11η-0.42 + 1.40(3) /在线式>其中α与上述相同,η在135℃下在四氢化萘溶剂中测定的特性粘度(dl / g)。由第一或第二结晶聚丙烯制成的模制品和薄膜是高度的 具有良好的耐热性和耐刮擦性。