METHOD FOR PROCESSING POLYOLEFINS AT HIGH SHEAR RATES

申请公布号：: WO1994019168(A1)
申请号：: US1994001610
申请日期：: 1994.02.17
申请公布日期：: 1994.09.01
摘要：: <p>Processing, particularly extruding polyolefins having low MI, narrow MWD at extrusion temperatures less than 200 °C and at shear rates less than 2000 sec-1 but higher than the slipstick region of the polyolefin produces a new window of processing conditions to produce smooth polymers that do not have sharkskin melt fracture or wavy surfaces.</p>