GB1430072A - Polymerisation process - Google Patents

Polymerisation process

Info

Publication number
GB1430072A
GB1430072A GB3280972A GB3280972A GB1430072A GB 1430072 A GB1430072 A GB 1430072A GB 3280972 A GB3280972 A GB 3280972A GB 3280972 A GB3280972 A GB 3280972A GB 1430072 A GB1430072 A GB 1430072A
Authority
GB
United Kingdom
Prior art keywords
ethylene
catalyst
rate
constant
hydrogen
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
GB3280972A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB3280972A priority Critical patent/GB1430072A/en
Priority to DK386673AA priority patent/DK141101B/en
Priority to BE133425A priority patent/BE802280A/en
Priority to DE19732335536 priority patent/DE2335536A1/en
Priority to FR7325653A priority patent/FR2193039B2/fr
Priority to NL7309727A priority patent/NL7309727A/xx
Priority to LU68012A priority patent/LU68012A1/xx
Priority to AU58056/73A priority patent/AU467696B2/en
Priority to JP48078549A priority patent/JPS4953272A/ja
Priority to ZA00734749A priority patent/ZA734749B/en
Publication of GB1430072A publication Critical patent/GB1430072A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic System
    • C07F7/28—Titanium compounds
    • 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)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Polymerisation Methods In General (AREA)
  • Polymerization Catalysts (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

1430072 Continuous polymerization of ethylene IMPERIAL CHEMICAL INDUSTRIES Ltd 4 July 1973 [13 July 1972] 32809/72 Addition to 1314828 Heading C3P Ethylene is polymerized continuously by contacting a catalyst with a mixture of hydrogen and ethylene in a reaction vessel, the ratio of ethylene to hydrogen in the vessel being kept constant at a value between 1 : 10 and 10 : 1, the total pressure being not greater than 40 kg./cm.<SP>2</SP>, the catalyst being introduced at such a rate as to keep the rate of polymerization constant, and the catalyst being the product of reacting particulate alumina or silica which has hydroxyl groups on the surface but is free of adsorbed water with a compound of formula MR m , where M is a Group IVa metal, vanadium or chromium, m is the valency of M and R is a hydrocarbon or substituted hydrocarbon group. Conveniently the ethylene may be introduced at a constant rate and the catalyst at such a rate as to keep the total pressure constant, continuously or in discrete portions. The melt flow index of the product may be selected by varying the proportion of hydrogen and/or the polymerization rate. The exemplified catalyst is zirconium tetrabenzyl on alumina; other suitable catalysts are as described in Specification 1,314,828.
GB3280972A 1972-07-13 1972-07-13 Polymerisation process Expired GB1430072A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
GB3280972A GB1430072A (en) 1972-07-13 1972-07-13 Polymerisation process
DK386673AA DK141101B (en) 1972-07-13 1973-07-12 Process for Continuous Polymerization of Ethylene.
BE133425A BE802280A (en) 1972-07-13 1973-07-12 POLYMERIZATION PROCESS
DE19732335536 DE2335536A1 (en) 1972-07-13 1973-07-12 PROCESS FOR CONTINUOUS POLYMERIZATION OF AETHYLENE
FR7325653A FR2193039B2 (en) 1972-07-13 1973-07-12
NL7309727A NL7309727A (en) 1972-07-13 1973-07-12
LU68012A LU68012A1 (en) 1972-07-13 1973-07-13
AU58056/73A AU467696B2 (en) 1972-07-13 1973-07-13 Polymerisation process
JP48078549A JPS4953272A (en) 1972-07-13 1973-07-13
ZA00734749A ZA734749B (en) 1972-07-13 1973-07-13 Polymerisation process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3280972A GB1430072A (en) 1972-07-13 1972-07-13 Polymerisation process

Publications (1)

Publication Number Publication Date
GB1430072A true GB1430072A (en) 1976-03-31

Family

ID=10344319

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3280972A Expired GB1430072A (en) 1972-07-13 1972-07-13 Polymerisation process

Country Status (10)

Country Link
JP (1) JPS4953272A (en)
AU (1) AU467696B2 (en)
BE (1) BE802280A (en)
DE (1) DE2335536A1 (en)
DK (1) DK141101B (en)
FR (1) FR2193039B2 (en)
GB (1) GB1430072A (en)
LU (1) LU68012A1 (en)
NL (1) NL7309727A (en)
ZA (1) ZA734749B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3950269A (en) * 1974-05-20 1976-04-13 E. I. Du Pont De Nemours & Co. Olefin polymerization catalyst system and process for polymerization of olefins

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE559774A (en) * 1956-08-03
SE387348B (en) * 1969-08-13 1976-09-06 Ici Ltd TRANSITIONAL METAL COMPOSITION, INTENDED TO BE USED AS A CATALYST IN THE POLYMERIZATION OF OLEFINICALLY UNSATATED MONOMERS

Also Published As

Publication number Publication date
DK141101B (en) 1980-01-14
FR2193039A2 (en) 1974-02-15
LU68012A1 (en) 1973-09-26
NL7309727A (en) 1974-01-15
DE2335536A1 (en) 1974-04-18
JPS4953272A (en) 1974-05-23
ZA734749B (en) 1975-02-26
FR2193039B2 (en) 1977-05-13
AU5805673A (en) 1975-01-16
BE802280A (en) 1974-01-14
DK141101C (en) 1980-07-14
AU467696B2 (en) 1975-12-11

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee