Highly crystalline propylene homopolymers
    7.
    发明授权
    Highly crystalline propylene homopolymers 失效
    高度结晶的丙烯均聚物

    公开(公告)号:US07022795B1

    公开(公告)日:2006-04-04

    申请号:US09041698

    申请日:1998-03-13

    摘要: Propylene homopolymers, wherein, in their separation according to tacticity by first dissolving the polymers in boiling xylene, then cooling the solution to 25° C. at a cooling rate of 10° C./h and then, with ascending temperature, separating the propylene homopolymers into fractions of different tacticity, either one or more of the conditions that i) the fraction of propylene homopolymers which remains undissolved on heating the cooled propylene homopolymer solution to 112° C. is greater than 20% by weight or ii) the fraction of propylene homopolymers which remains undissolved on heating the cooled propylene homopolymer solution to 117° C. is greater than 8% by weight or iii) the fraction of propylene homopolymers which remains undissolved on heating the cooled propylene homopolymer solution to 122° C. is greater than 1% by weight, are satisfied.

    摘要翻译: 丙烯均聚物,其中通过首先将聚合物溶解在沸腾的二甲苯中,根据立构规整度的分离,然后以10℃/小时的冷却速率将溶液冷却至25℃,然后在升高温度下分离丙烯 将均聚物分成不同立构规整度的一个或多个条件,i)在将冷却的丙烯均聚物溶液加热至112℃时保持未溶解的丙烯均聚物的分数大于20重量%或ii) 在将冷却的丙烯均聚物溶液加热至117℃时保持未溶解的丙烯均聚物大于8重量%或iii)在将冷却的丙烯均聚物溶液加热至122℃时保持未溶解的丙烯均聚物的分数大于 1重量%。

    Random propylene copolymers
    10.
    发明授权
    Random propylene copolymers 有权
    无规丙烯共聚物

    公开(公告)号:US07026421B2

    公开(公告)日:2006-04-11

    申请号:US10971079

    申请日:2004-10-25

    IPC分类号: C08F210/06 C08F210/08

    摘要: Random copolymers of propylene with other 1-alkenes having up to carbon atoms, whose content of comonomers is in the range from 0.7 to 1.4% by weight if the only comonomer present in the propylene copolymers is ethylene, or whose content of comonomers is in the range from 0.7 to 3.0% by weight if at least one C4–C10-1-alkene is present as comonomer, and whose cold-xylene-soluble fraction is from 1.0 to 2.5% by weight if ethylene is present as a comonomer in the propylene copolymers, or whose cold-xylene-soluble fraction is from 0.75 to 2.0% by weight if the only comonomers present are C4–C10-1-alkenes, and a process for preparing the random copolymers of propylene is described, as is their use for producing films, fibers or moldings, and also the films, fibers and moldings themselves and biaxially stretched films made from random propylene copolymers of this type and processes for their production.

    摘要翻译: 丙烯与具有至多碳原子的其它1-烯烃的无规共聚物,如果丙烯共聚物中存在的共聚单体中唯一的共聚单体为共聚单体,其共聚单体的含量为0.7-1.4重量%,或其共聚单体的含量为 如果至少一个C 4 -C 10 - 1-烯烃作为共聚单体存在,其冷二甲苯可溶成分为 如果乙烯作为丙烯共聚物中的共聚单体存在,则其重量为1.0至2.5重量%,或者如果仅存在共聚单体为C 4 - 4,则冷二甲苯可溶成分为0.75-2.0重量% 描述了用于制备膜,纤维或模制品的方法,以及薄膜,纤维和模制品本身以及双轴的方法制备丙烯的无规共聚物的方法。 由这种类型的无规丙烯共聚物制成的拉伸薄膜及其生产方法。