摘要:
Propylene polymers having a content of isotactic pentads (mmmm) higher than 97%, molecular weight distribution, expressed by the formula (a) ratio, equal to or higher than 6 and a value of formula (b) ratio equal to or lower than 5.5. The said polymers are prepared in the presence of a particular combination of Ziegler-Natta solid catalyst components and highly stereoregulating electron-donor compounds. Laminated articles, in particular bi-axially oriented films and sheets, can be prepared with the said polymers {overscore (M)}w/{overscore (M)}n (a) {overscore (M)}z/{overscore (M)}w. (b)
摘要:
An apparatus for use in material processing takes the form of a vessel including a wall at least partially formed of a flexible film The film includes at least two layers having an anti-static agent and sandwiching an intermediate layer. Related methods are also disclosed.
摘要:
A multilayer biaxially oriented propylene polymer film, characterized in that the support layer of said multilayer film comprises: (A) 15 to 75 wt % of a propylene homopolymer and (B) 25 to 85 wt % of a propylene copolymer composition comprising (percent of (a) and (b) based on the component (B)): (a) 50 to 85 wt % of a propylene copolymer containing from 0.05 to 1.5 wt % of alpha-olefin units having from 2 to 10 carbon atoms other than propylene; and (b) 15 to 50 wt % of a propylene copolymer containing less than 20 wt % of alpha-olefin units having from 2 to 10 carbon atoms other than propylene
摘要:
Propylene polymers having a content of isotactic pentads (mmmm) higher than 97%, molecular weight distribution, expressed by the formula (a) ratio, equal to or higher than 6 and a value of formula (b) ratio equal to or lower than 5.5. The said polymers are prepared in the presence of a particular combination of Ziegler-Natta solid catalyst components and highly stereoregulating electron-donor compounds. Laminated articles, in particular bi-axially oriented films and sheets, can be prepared with the said polymers.
摘要:
Propylene polymers having a content of isotactic pentads (mmmm) higher than 97%, molecular weight distribution, expressed by the formula (a) ratio, equal to or higher than 6 and a value of formula (b) ratio equal to or lower than 5.5. The said polymers are prepared in the presence of a particular combination of Ziegler-Natta solid catalyst components and highly stereoregulating electron-donor compounds. Laminated articles, in particular bi-axially oriented films and sheets, can be prepared with the said polymers. M _ w / M _ n ( a ) M _ z / M _ w ( b )
摘要翻译:具有高于97%的全同立构五单元组(mmmm)含量的丙烯聚合物,由式(a)比率表示的分子量分布等于或高于6,式(b)的值等于或低于5.5 。 所述聚合物在齐格勒 - 纳塔固体催化剂组分和高度立构调节电子给体化合物的特定组合的存在下制备。 可以用所述聚合物制备层压制品,特别是双轴取向膜和片材。 M _ w / M _ n(a)M _ z / M _ w(b)
摘要:
Propylene polymers having a content of isotactic pentads (mmmm) higher than 97%, molecular weight distribution, expressed by the formula (a) ratio, equal to or higher than 6 and a value of formula (b) ratio equal to or lower than 5.5. The said polymers are prepared in the presence of a particular combination of Ziegler-Natta solid catalyst components and highly stereoregulating electron-donor compounds. Laminated articles, in particular bi-axially oriented films and sheets, can be prepared with the said polymers. {overscore (M)}w/{overscore (M)}n (a) {overscore (M)}z/{overscore (M)}w (b)