Title:
エチレン−ブテンコポリマーの短鎖分岐制御
Document Type and Number:
Japanese Patent JP6486393
Kind Code:
B2
Abstract:
A method is provided to control the short chain branching (SCB) distribution of an ethylene-butene (EB) polyethylene resin that is prepared in a gas phase polymerization process using a specific type of magnesium-titanium Ziegler Natta catalyst. The method allows the level of short chain branching to be increased in the low molecular weight fraction of the resin by increasing the polymerization residence time. The polymers that are produced in accordance with this invention may be useful for the preparation of cast films and blown films, especially for stretch film applications.
Inventors:
Kelly, mark
Goyar, Sivendra
McCaarn, James
Goyar, Sivendra
McCaarn, James
Application Number:
JP2016572743A
Publication Date:
March 20, 2019
Filing Date:
May 12, 2015
Export Citation:
Assignee:
Nova Chemicals (International) Society Anonym
International Classes:
C08F210/02; C08F4/02; C08F4/658
Domestic Patent References:
| JP2004522849A |
Foreign References:
| US20060094838 |
Attorney, Agent or Firm:
Asamura patent office
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