JPS5632508A - Polymerization of ethylene - Google Patents

Polymerization of ethylene

Info

Publication number
JPS5632508A
JPS5632508A JP10820179A JP10820179A JPS5632508A JP S5632508 A JPS5632508 A JP S5632508A JP 10820179 A JP10820179 A JP 10820179A JP 10820179 A JP10820179 A JP 10820179A JP S5632508 A JPS5632508 A JP S5632508A
Authority
JP
Japan
Prior art keywords
polymer
ethylene
polymerizer
molecular
ratio
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
JP10820179A
Other languages
Japanese (ja)
Other versions
JPS5856524B2 (en
Inventor
Shigeru Mizutani
Tadashi Ikegami
Yoshihiko Katayama
Hisaya Sakurai
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.)
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Chemical Industry Co 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 Asahi Chemical Industry Co Ltd filed Critical Asahi Chemical Industry Co Ltd
Priority to JP54108201A priority Critical patent/JPS5856524B2/en
Publication of JPS5632508A publication Critical patent/JPS5632508A/en
Publication of JPS5856524B2 publication Critical patent/JPS5856524B2/en
Expired legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Landscapes

  • Polymerisation Methods In General (AREA)

Abstract

PURPOSE: Two or more polymerizers are connected in series and the polymerization mixture is circulated under sepcific conditions to produce 2 or more products different in molecular weight at the same time in high productivity.
CONSTITUTION: Ethylene, hydrogen, hexane and the catalyst are fed from line 2 to polymerizer 1 to produce low-molecular-weight polymer. The polymer mixture is sent to flash drum 3 where ethylene and hydrogen are removed and a part of the polymer is taken out through pipe 6 by pump 5 as a product. The rest of the polymer is sent to the second-stage polymerizer 7 to which ethylene, hexane and the catalyst are charged and high-molecular-weight polyethylene is produced. A part of the resultant polymer slurry is recycled to polymerizer 1 by pump 9. The ratio of the polymers formed at the first-stage polymerization to the second is adjusted to 6/4W4/6 preferably, the ratio of the circulation amount of the take-up amount is controlled to 2W50 preferably, thus producing polyethylenes having a molecular weight ratio of 5W100.
COPYRIGHT: (C)1981,JPO&Japio
JP54108201A 1979-08-27 1979-08-27 Ethylene polymerization method Expired JPS5856524B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54108201A JPS5856524B2 (en) 1979-08-27 1979-08-27 Ethylene polymerization method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54108201A JPS5856524B2 (en) 1979-08-27 1979-08-27 Ethylene polymerization method

Publications (2)

Publication Number Publication Date
JPS5632508A true JPS5632508A (en) 1981-04-02
JPS5856524B2 JPS5856524B2 (en) 1983-12-15

Family

ID=14478575

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54108201A Expired JPS5856524B2 (en) 1979-08-27 1979-08-27 Ethylene polymerization method

Country Status (1)

Country Link
JP (1) JPS5856524B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63126691U (en) * 1987-02-10 1988-08-18
JP2001220402A (en) * 2000-01-18 2001-08-14 Solvay Polyolefins Europe Belgium Method for producing polyolefin resin

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63126691U (en) * 1987-02-10 1988-08-18
JP2001220402A (en) * 2000-01-18 2001-08-14 Solvay Polyolefins Europe Belgium Method for producing polyolefin resin

Also Published As

Publication number Publication date
JPS5856524B2 (en) 1983-12-15

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