Nothing Special   »   [go: up one dir, main page]

JPS5632507A - Production of polyethylene by continuous multistage polymerization - Google Patents

Production of polyethylene by continuous multistage polymerization

Info

Publication number
JPS5632507A
JPS5632507A JP10753079A JP10753079A JPS5632507A JP S5632507 A JPS5632507 A JP S5632507A JP 10753079 A JP10753079 A JP 10753079A JP 10753079 A JP10753079 A JP 10753079A JP S5632507 A JPS5632507 A JP S5632507A
Authority
JP
Japan
Prior art keywords
ethylene
stage polymerization
molar ratio
hydrogen
polymerization
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
JP10753079A
Other languages
Japanese (ja)
Other versions
JPS6352655B2 (en
Inventor
Masahito Harada
Yoshikatsu Ishigaki
Atsushi Suzuki
Jun Masuda
Sadahiko Yamada
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 JP10753079A priority Critical patent/JPS5632507A/en
Priority to EP19800302878 priority patent/EP0024881B1/en
Priority to DE8080302878T priority patent/DE3064828D1/en
Publication of JPS5632507A publication Critical patent/JPS5632507A/en
Publication of JPS6352655B2 publication Critical patent/JPS6352655B2/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: After the first-stage polymerization in the presence of a Ziegler catalyst, a solvent and hydrogen under specific conditions, the monomer and hydrogen is fed to adjust the molar ratio in the vapor phase and the second-stage polymerization is effected to produce continuously the titled polymer having wide molecular weight distribution and good moldability.
CONSTITUTION: By using a Ziegler catalyst that is prepared by combining (a) a solid product from a trivalent metal halide and a divalent metal hydroxide and (b) another solid product from an electron donor and a transition metal compound such as a compound of group IVa metal with (c) an organoaluminum compound, the first-stage polymerization of ethylene is conducted in a saturated hydrocarbon solvent at 30W100°C and 11W70kg/cm2 at a molar ratio of 1/0.001W0.5 ethylene/ hydrogen under the feed of 10W70% ethylene on the basis of the total ethylene to be used. The resultant polymerization mixture is sent to the second-stage polymerization system where the second polymerization is effected in a saturated hydrocarbon solvent at 50W120°C and 11W70kg/cm2 at a molar ratio of 1/0.1W3.0 ethylene/ hydrogen in the vapor phase with 30W90% ethylene.
COPYRIGHT: (C)1981,JPO&Japio
JP10753079A 1979-08-20 1979-08-23 Production of polyethylene by continuous multistage polymerization Granted JPS5632507A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP10753079A JPS5632507A (en) 1979-08-23 1979-08-23 Production of polyethylene by continuous multistage polymerization
EP19800302878 EP0024881B1 (en) 1979-08-20 1980-08-20 Process for producing polyethylene by continuous multi-stage polymerization and moulded articles made from the product
DE8080302878T DE3064828D1 (en) 1979-08-20 1980-08-20 Process for producing polyethylene by continuous multi-stage polymerization and moulded articles made from the product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10753079A JPS5632507A (en) 1979-08-23 1979-08-23 Production of polyethylene by continuous multistage polymerization

Publications (2)

Publication Number Publication Date
JPS5632507A true JPS5632507A (en) 1981-04-02
JPS6352655B2 JPS6352655B2 (en) 1988-10-19

Family

ID=14461520

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10753079A Granted JPS5632507A (en) 1979-08-20 1979-08-23 Production of polyethylene by continuous multistage polymerization

Country Status (1)

Country Link
JP (1) JPS5632507A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5893742A (en) * 1981-12-01 1983-06-03 Showa Denko Kk Thermoforming resin composition
JPS61148207A (en) * 1984-12-21 1986-07-05 Nippon Oil Co Ltd Production of ultrahigh molecular weight polyethylene
JPS6436607A (en) * 1987-07-16 1989-02-07 Hoechst Ag Manufacture of polyolefin with broad molecular weight distribution

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5893742A (en) * 1981-12-01 1983-06-03 Showa Denko Kk Thermoforming resin composition
JPS6353213B2 (en) * 1981-12-01 1988-10-21 Showa Denko Kk
JPS61148207A (en) * 1984-12-21 1986-07-05 Nippon Oil Co Ltd Production of ultrahigh molecular weight polyethylene
JPS6436607A (en) * 1987-07-16 1989-02-07 Hoechst Ag Manufacture of polyolefin with broad molecular weight distribution

Also Published As

Publication number Publication date
JPS6352655B2 (en) 1988-10-19

Similar Documents

Publication Publication Date Title
JPS5632506A (en) Continuous polymerization of ethylene
JPS55164205A (en) Multistage polymerization of ethylene
JPS56166208A (en) Gas-phase polymerization of olefin
JPS5578004A (en) Polymerization of olefin
JPS57123205A (en) Production of low-molecular weight copolymer
JPS5578005A (en) Polymerization of olefin
JPS5761012A (en) Production of thermoplastic elastic elastomer
JPS5632507A (en) Production of polyethylene by continuous multistage polymerization
JPS5632505A (en) Production of polyethylene by continuous multistage polymerization
CA2050422A1 (en) Gas phase polymerisation process
JPS55102608A (en) Preparation of olefin polymer
JPS57128707A (en) Preparation of polyethylene by multistage polymerization
JPS5686907A (en) Polymerizing method of olefin
JPS56147808A (en) Preparation of ethylenic copolymer
JPS57174310A (en) Production of propylene/ethylene block copolymer
JPS5634713A (en) Preparation of polyethylene by continuous multistage polymerization
JPS5634712A (en) Preparation of polyethylene by continuous multistage polymerization
JPS5294391A (en) Polymerization of alpha-olefins
JPS5798510A (en) Production of polyethylene by multistage polymerization
JPS5485289A (en) Propylene polymer having broad molecular weight distribution
JPS5690810A (en) Production of polyethylene
JPS56166209A (en) Gas-phase polymerization of olefin
JPS5470385A (en) Production of olefin polymer
JPS55106203A (en) Preparation of ethylenic polymer
JPS54138088A (en) Production of alpha-olefin polymer