[12] Patent
[11] Patent No.:GC0010825  
[45] Date of Publishing the Grant of the Patent: 1/Jun /2020                63/2020  
Number of the Decision to Grant the Patent:2020/163195
Date of the Decision to Grant the Patent:13/Feb/2020

[21] Application No.:GC 2016-31820

[22] Filing Date:4/8/2016

[30] Priority:

[33] State [32] Priority date [31] Priority No.
CA
20/8/2015
2,900,772

[72] Inventors:1- KER Victoria ،2- HOANG Peter Phung Minh

[73] Owner: NOVA Chemicals (International) S.A., Avenue de la Gare 14 1700, Fribourg, Switzerland

[74] Agent: Suleiman I. Al-Ammar Law Office

  

 

  

[51]IPC:
Int. Cl.: C08F 210/14 (2006.01)

[56] Cited Documents:

-WO 2004/060931 A1 (UNIVATION TECH LLC [US]) 22 July 2004
-WO 20131188950 A1 (NOVA CHEM INT SA [CH]; KER VICTORIA [CA]; LAM PATRICK [CA]; JIANG VAN) 27 December 2013
 
Examiner: Eng. Yusuf AlRaqabi

[54] METHOD FOR ALTERING MELT FLOW RATIO OF ETHYLENE POLYMERS
[57] Abstract: A method for altering the melt flow ratio (MFR) of ethylene copolymers made in a gas phase reactor using a supported Ziegler-Natta catalyst treated with a catalyst modifier. The method involves changing the amount of the catalyst modifier added to the supported Ziegler-Natta polymerization catalyst to effect changes in the MFR of the resulting polymer.
No. of claims: 11


 

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