Title:
ハフノセン触媒ポリエチレンからの高引裂強度フィルム
Document Type and Number:
Japanese Patent JP4563401
Kind Code:
B2
Abstract:
A polyethylene film having a balance of improved physical and mechanical properties and a method for making the same are provided. In one aspect, the film includes a 1% secant modulus of greater than 25,000 psi, a dart impact resistance of greater than 500 g/mil, and a MD tear strength of greater than 500 g/mil. In one aspect, the method comprises reacting ethylene derived units and a comonomer in the presence of a hafnium-based metallocene at a temperature of from 70° C. and 90° C., an ethylene partial pressure of from 120 psia and 260 psia, and a comonomer to ethylene ratio of from 0.01 to 0.02 to produce an ethylene based polymer. The method further comprises extruding the ethylene based polymer at conditions sufficient to produce a polyethylene film comprising a secant modulus of greater than 25,000 psi, a dart impact resistance of greater than 500 g/mil, and a MD tear strength of greater than 500 g/mil.
Inventors:
John F. Stur
James MacLeod Farley
Lorin J. Macarak
Ryan Winston Impelman
James MacLeod Farley
Lorin J. Macarak
Ryan Winston Impelman
Application Number:
JP2006545309A
Publication Date:
October 13, 2010
Filing Date:
April 13, 2004
Export Citation:
Assignee:
Univations Technologies LLC
International Classes:
B29C48/08; B29C48/10; B29C48/305; B29C48/92; B32B27/00; B32B27/32; C08F4/06; C08F4/44; C08F4/64; C08F8/00; C08F10/00; C08F210/14; C08F210/16; C08J5/18; C08L23/08; B29K23/00; B29L7/00; C08F4/659
Domestic Patent References:
| JP2005520040A | ||||
| JP2002513437A | ||||
| JP2001525457A |
Attorney, Agent or Firm:
Motohiro Kurauchi
Endo Azusa
Takumi Yoshida
Taku Nakajima
Endo Azusa
Takumi Yoshida
Taku Nakajima