Title:
改良された容易に加工可能な直鎖低密度ポリエチレン
Document Type and Number:
Japanese Patent JP4982003
Kind Code:
B2
Abstract:
A polymer of ethylene and at least one alpha olefin having at least 5, carbon atoms obtainable by a continuous gas phase polymerization using supported catalyst of an activated molecularly discrete catalyst such as a metallocene in the substantial absence of an aluminum alkyl based scavenger which polymer has a Melt Index (MI) as herein defined of from 0.1 to 15; a Compositional Distribution Breadth Index (CDBI) as defined herein of at least 70%, a density of from 0.910 to 0.930 g/ml; a Haze value as herein defined of less than 20%; a Melt Index ratio (MIR) as herein defined of from 35 to 80; an averaged Modulus (M) as herein defined of from 20 000 to 60 000 psi (pounds per square inch) and a relation between M and the Dart Impact Strength in g/mil (DIS) complying with the formula:
Inventors:
Liu, Chin-Thailand
Merrill, Natalie A.
Mour, Michael Yee
Bourne, George A.
Merrill, Natalie A.
Mour, Michael Yee
Bourne, George A.
Application Number:
JP54184198A
Publication Date:
July 25, 2012
Filing Date:
March 27, 1998
Export Citation:
Assignee:
ExxonMobil Chemical Patents, Inc.
International Classes:
C08F210/16; C08F2/34; C08F4/60; C08F4/602; C08F4/6592; C08F210/02; C08J5/18; C08F4/659
Domestic Patent References:
| JP848711A | ||||
| JP8176332A | ||||
| JP8505172A | ||||
| JP8510291A |
Attorney, Agent or Firm:
Yuzo Yamazaki