公开(公告)号：US09309337B2

公开(公告)日：2016-04-12

申请号：US13855181

申请日：2013-04-02

申请人： Johannes Matthieu Soulages ,  David John Lohse ,  Andy Haishung Tsou ,  Thomas Sun ,  Pamela Jean Wright ,  Nikos Hadjichristidis ,  Pradeep Pandurang Shirodkar

发明人： Johannes Matthieu Soulages ,  David John Lohse ,  Andy Haishung Tsou ,  Thomas Sun ,  Pamela Jean Wright ,  Nikos Hadjichristidis ,  Pradeep Pandurang Shirodkar

IPC分类号： C08F110/02 ,  C08L23/06

CPC分类号： C08F110/02 ,  C08L23/06 ,  C08L2205/025 ,  C08L2207/07

摘要： Provided are blends of branched hydrocarbon comb polymers having tailored branching and molecular weight parameters, with substantially linear polymers. Such blends have been found to have improved extensional rheological properties, while maintaining nearly the viscosity of the substantially linear polymers. The blends of the hydrocarbon comb polymers with the substantially linear polymers thus maintain the extrusion processing characteristics of the linear polymer alone, but have improved extensional flow processability, with strain hardening ratios (SHR) greater than 1. The blends are effective in blown film processing. Also disclosed are related methods for improving extensional flow processability using the branched hydrocarbon comb polymers, as well as the branched hydrocarbon comb polymers themselves, including as a property enhancing additive for such substantially linear polymers.

摘要翻译： 提供具有定制的支化和分子量参数的支链烃梳聚合物的混合物，具有基本上线性的聚合物。 已发现这种共混物具有改进的拉伸流变性能，同时保持基本上线性聚合物的粘度。 烃梳聚合物与基本上线性的聚合物的共混物因此保持单独的线性聚合物的挤出加工特性，但具有改进的拉伸流动加工性能，应变硬化率（SHR）大于1.该共混物在吹塑薄膜加工中是有效的 。 还公开了使用支链烃梳聚合物以及支链烃梳聚合物本身提高拉伸流加工性的相关方法，包括作为这种基本上线性的聚合物的性能增强添加剂。