JPS56166209A - Gas-phase polymerization of olefin - Google Patents

Gas-phase polymerization of olefin

Info

Publication number
JPS56166209A
JPS56166209A JP6955980A JP6955980A JPS56166209A JP S56166209 A JPS56166209 A JP S56166209A JP 6955980 A JP6955980 A JP 6955980A JP 6955980 A JP6955980 A JP 6955980A JP S56166209 A JPS56166209 A JP S56166209A
Authority
JP
Japan
Prior art keywords
polymerization
hydrogen
polymerization zone
monomer
pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP6955980A
Other languages
Japanese (ja)
Other versions
JPH029046B2 (en
Inventor
Yoshinori Morita
Akifumi Kato
Junichi Yoshida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Petrochemical Industries Ltd
Original Assignee
Mitsui Petrochemical Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsui Petrochemical Industries Ltd filed Critical Mitsui Petrochemical Industries Ltd
Priority to JP6955980A priority Critical patent/JPS56166209A/en
Publication of JPS56166209A publication Critical patent/JPS56166209A/en
Publication of JPH029046B2 publication Critical patent/JPH029046B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: After the polymerization in the presence of hydrogen in the first polymerization zone, the monomer is added to the second polymerization zone so that the molar ratio of hydrogen to the monomer is made lower than that in the first polymerization zone, the second polymerization is effected, the gas phase is circulated, thus producing the titled polymer with freely controlled molecular weight distribution.
CONSTITUTION: When multistaged polymerization of an olefin such as ethylene is conducted using separated two polymerization zones, that is, the first gas-phase polymerization zone and the second one, the catalyst, the monomer and hydrogen are supplied from pipes 1, 2, and 3 respectively to the first polymerization A. Then, the product accompanied with the gaseous monomer and hydrogen is taken out of pipe 6 and supplied to the second polymerization zone B. Additional monomer is fed from pipe 12 so that the molar ratio of hydrogen/olefin is kept lower than that in the first polymerization zone A to effect the second-stage polymerization. A part or all of the gaseous mixture expelled out of the second polymerization zone B through pipe 7 is sent through pipe 9, gas-circulation lines 4, 5 to the first polymerization zone A.
COPYRIGHT: (C)1981,JPO&Japio
JP6955980A 1980-05-27 1980-05-27 Gas-phase polymerization of olefin Granted JPS56166209A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6955980A JPS56166209A (en) 1980-05-27 1980-05-27 Gas-phase polymerization of olefin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6955980A JPS56166209A (en) 1980-05-27 1980-05-27 Gas-phase polymerization of olefin

Publications (2)

Publication Number Publication Date
JPS56166209A true JPS56166209A (en) 1981-12-21
JPH029046B2 JPH029046B2 (en) 1990-02-28

Family

ID=13406221

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6955980A Granted JPS56166209A (en) 1980-05-27 1980-05-27 Gas-phase polymerization of olefin

Country Status (1)

Country Link
JP (1) JPS56166209A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002544337A (en) * 1999-05-18 2002-12-24 バゼル ポリオレフィン ゲゼルシャフト ミット ベシュレンクテル ハフツング Drying and degassing of polyolefin

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002544337A (en) * 1999-05-18 2002-12-24 バゼル ポリオレフィン ゲゼルシャフト ミット ベシュレンクテル ハフツング Drying and degassing of polyolefin

Also Published As

Publication number Publication date
JPH029046B2 (en) 1990-02-28

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