FR2090789A5 - High pressure polymerisation of ethylene - Google Patents

High pressure polymerisation of ethylene

Info

Publication number
FR2090789A5
FR2090789A5 FR7114969A FR7114969A FR2090789A5 FR 2090789 A5 FR2090789 A5 FR 2090789A5 FR 7114969 A FR7114969 A FR 7114969A FR 7114969 A FR7114969 A FR 7114969A FR 2090789 A5 FR2090789 A5 FR 2090789A5
Authority
FR
France
Prior art keywords
ethylene
high pressure
polymer
separation
followed
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.)
Expired
Application number
FR7114969A
Other languages
French (fr)
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.)
Mitsubishi Petrochemical Co Ltd
Original Assignee
Mitsubishi Petrochemical 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
Priority claimed from JP7037870A external-priority patent/JPS4937434B1/ja
Application filed by Mitsubishi Petrochemical Co Ltd filed Critical Mitsubishi Petrochemical Co Ltd
Application granted granted Critical
Publication of FR2090789A5 publication Critical patent/FR2090789A5/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/005—Separating solid material from the gas/liquid stream
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

Ethylene is (co)polymerised at 100-400 degrees C under pressure of 700-5000 kg/cm2, in presence of an initiator, followed by separation of a major portion of the polymer from the reaction mixture, using one or more high pressure product separation devices which contain the polymer produced and unreacted ethylene and of which at least one is operated at a pressure of 500-1000 kg/cm2, this being followed by recycling of the remainder contg. unreacted ethylene. Quality control at the separation stage rather than at the polymerisation stage makes it possible to obtain easily and continuously, polymer of two or more specific qualities and with distinct characteristics.
FR7114969A 1970-04-27 1971-04-27 High pressure polymerisation of ethylene Expired FR2090789A5 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3369270 1970-04-27
JP7037870A JPS4937434B1 (en) 1970-08-13 1970-08-13

Publications (1)

Publication Number Publication Date
FR2090789A5 true FR2090789A5 (en) 1972-01-14

Family

ID=26372437

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7114969A Expired FR2090789A5 (en) 1970-04-27 1971-04-27 High pressure polymerisation of ethylene

Country Status (1)

Country Link
FR (1) FR2090789A5 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2313400A1 (en) * 1975-05-31 1976-12-31 Basf Ag HIGH PRESSURE POLYETHYLENE PREPARATION PROCESS
FR2313402A1 (en) * 1975-06-03 1976-12-31 Basf Ag HIGH PRESSURE POLYETHYLENE PREPARATION PROCESS
EP0022386A1 (en) * 1979-07-05 1981-01-14 Société Chimique des Charbonnages Process for the preparation of ethylene polymers and apparatus for carrying out this process

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2313400A1 (en) * 1975-05-31 1976-12-31 Basf Ag HIGH PRESSURE POLYETHYLENE PREPARATION PROCESS
FR2313402A1 (en) * 1975-06-03 1976-12-31 Basf Ag HIGH PRESSURE POLYETHYLENE PREPARATION PROCESS
EP0022386A1 (en) * 1979-07-05 1981-01-14 Société Chimique des Charbonnages Process for the preparation of ethylene polymers and apparatus for carrying out this process

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Legal Events

Date Code Title Description
ST Notification of lapse