[12] Patent
[11] Patent No.:GC0007584  
[45] Date of Publishing the Grant of the Patent: 30/Apr /2018                48/2018  
Number of the Decision to Grant the Patent:2018/126035
Date of the Decision to Grant the Patent:15/Apr/2018

[21] Application No.:GCC/P/2009/14064

[22] Filing Date:5/8/2009

[30] Priority:

[33] State [32] Priority date [31] Priority No.

[72] Inventors:1- Yuki ASO ،2- Noriyuki SATOU،3- Shin-ichi KUMAMOTO

[73] Owner: SUMITOMO CHEMICAL COMPANY , LIMITED , 27-1, Shinkawa 2-chome, Chuo-ku, Tokyo, Japan

[74] Agent: Kadasa Law Firm




Int. Cl.: C08F210/02; C08F210/06; C08F4/72 (2006.01)

[56] Cited Documents:

-US 4,851,488 (BURSTAIN ISRAEL G ) 25 July 1989  
Examiner: Rami Al-Ghamdi

[57] Abstract: The purpose of the present invention is to provide a process for producing an olefin polymer, which can produce an olefin polymer having a higher molecular weight by lowering hydrogen concentration efficiently in polymerizing an olefin in the presence of hydrogen by use of a gas phase reaction vessel. There is provided a process for producing an olefin polymer comprising the steps of: using a gas phase reaction vessel; polymerizing an olefin by use of a catalyst for olefin polymerization in the presence of hydrogen; and adding a hydrogenation catalyst to a bed portion in the gas phase reaction vessel.
No. of claims: 8


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