阅读说明：本技术 具有高劲度和透明度的高熔体强度聚丙烯 (High melt strength polypropylene with high stiffness and clarity ) 是由 C·A·斯波福德 G·J·佩尔特 A·珀洛索 A·G·巴利 J·M·唐纳赫 于 2018-04-27 设计创作，主要内容包括：一种聚丙烯,其包含0.1wt％-4wt％的乙烯和/或C4-C12α-烯烃衍生的单元,一种或多种澄清剂或者二者；其中所述聚丙烯的挠曲模量是至少200kpsi(0.05in/min ASTM D790(A))和Mz/Mw是至少4。该聚丙烯可以通过将丙烯和共聚单体与齐格勒-纳塔催化剂和至少两种外给电子体合并来制造,其中所述给电子体的浓度是1-100ppm。给电子体的浓度可以降低来控制聚丙烯的雾度水平,和/或可以控制共聚单体衍生的单元的水平来降低聚丙烯的雾度水平。(A polypropylene comprising from 0.1 wt% to 4 wt% of ethylene and/or C4-C12 α -olefin derived units, one or more clarifying agents, or both, wherein the polypropylene has a flexural modulus of at least 200kpsi (0.05in/min ASTM D790(A)) and an Mz/Mw of at least 4 the polypropylene can be made by combining propylene and a comonomer with a Ziegler-Natta catalyst and at least two external electron donors, wherein the concentration of the electron donor is from 1 to 100ppm the concentration of the electron donor can be reduced to control the haze level of the polypropylene, and/or the level of comonomer derived units can be controlled to reduce the haze level of the polypropylene.)