JPS5634712A - Preparation of polyethylene by continuous multistage polymerization - Google Patents

Preparation of polyethylene by continuous multistage polymerization

Info

Publication number
JPS5634712A
JPS5634712A JP11060279A JP11060279A JPS5634712A JP S5634712 A JPS5634712 A JP S5634712A JP 11060279 A JP11060279 A JP 11060279A JP 11060279 A JP11060279 A JP 11060279A JP S5634712 A JPS5634712 A JP S5634712A
Authority
JP
Japan
Prior art keywords
compound
polymerization
reacting
stage
polyethylene
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
JP11060279A
Other languages
Japanese (ja)
Other versions
JPS6352656B2 (en
Inventor
Masahito Harada
Yoshikatsu Ishigaki
Sadahiko Yamada
Jun Masuda
Atsushi Suzuki
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.)
JNC Corp
Original Assignee
Chisso Corp
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 Chisso Corp filed Critical Chisso Corp
Priority to JP11060279A priority Critical patent/JPS5634712A/en
Publication of JPS5634712A publication Critical patent/JPS5634712A/en
Publication of JPS6352656B2 publication Critical patent/JPS6352656B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Polymerisation Methods In General (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Abstract

PURPOSE: To prepare polyethylene having broad molecular weight distribution, by the continuous multi-tage polymerization of ethylene in the presence of a catalyst comprising a solid component obtained by reacting a tri-valent metal halide with a divalent metal compound, an electron donor compound, a transition metal compound, and an organo-aluminum compound.
CONSTITUTION: The objective polyethylene is prepared by the two-stage polymerization in the presence of a catalyst obtained by mixing (I) a component prepared by (1) reacting a tri-valent metal halide with a divalent metal hydroxide, etc., (2) reacting the solid product with a compound of a transition metal of the IVa or Va group of the periodic table in the presence of an electron donative compound, and (3) reacting the reaction product with a halogen-containing transition metal compound, etc., with II) an organo-aluminum compound, wherein the first-stage polymerization is carried out in a solvent in the presence of hydrogen at 50W120°C and 5W70kg/cm2, to obtain the polymer suspended in the solvent, and the second- stage polymerization is carried out at 30W100°C and 5W70kg/cm2, provided that the pressure of the second-polymerization stage is lower than that of the first-polymerization stage by 1W30kg/cm2.
COPYRIGHT: (C)1981,JPO&Japio
JP11060279A 1979-08-30 1979-08-30 Preparation of polyethylene by continuous multistage polymerization Granted JPS5634712A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11060279A JPS5634712A (en) 1979-08-30 1979-08-30 Preparation of polyethylene by continuous multistage polymerization

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11060279A JPS5634712A (en) 1979-08-30 1979-08-30 Preparation of polyethylene by continuous multistage polymerization

Publications (2)

Publication Number Publication Date
JPS5634712A true JPS5634712A (en) 1981-04-07
JPS6352656B2 JPS6352656B2 (en) 1988-10-19

Family

ID=14540000

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11060279A Granted JPS5634712A (en) 1979-08-30 1979-08-30 Preparation of polyethylene by continuous multistage polymerization

Country Status (1)

Country Link
JP (1) JPS5634712A (en)

Also Published As

Publication number Publication date
JPS6352656B2 (en) 1988-10-19

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