FR2269541A1 - Controlling molecular distribution of ethylene (co)polymers - by controlling temp of polymerisation effected with Ziegler catalyst-hydrogen - Google Patents

Controlling molecular distribution of ethylene (co)polymers - by controlling temp of polymerisation effected with Ziegler catalyst-hydrogen

Info

Publication number
FR2269541A1
FR2269541A1 FR7513703A FR7513703A FR2269541A1 FR 2269541 A1 FR2269541 A1 FR 2269541A1 FR 7513703 A FR7513703 A FR 7513703A FR 7513703 A FR7513703 A FR 7513703A FR 2269541 A1 FR2269541 A1 FR 2269541A1
Authority
FR
France
Prior art keywords
controlling
distribution
temp
polymers
ethylene
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
FR7513703A
Other languages
French (fr)
Other versions
FR2269541B3 (en
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.)
Monsanto Co
Original Assignee
Monsanto Co
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 Monsanto Co filed Critical Monsanto Co
Publication of FR2269541A1 publication Critical patent/FR2269541A1/en
Application granted granted Critical
Publication of FR2269541B3 publication Critical patent/FR2269541B3/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • C08F10/02—Ethene

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Polymerisation Methods In General (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

Mol. wt. distribution of polyethylene and ethylene/alpha-olefin copolymers prepd. by gas phase (co)polymsn. in the presence of hydrogen and a Ziegler catalyst is controlled by suitably adjusting the polymsn. temp. to 85 to 115 degrees C, the temp. being increased to contract the mol. wt. distribution, and decreased to expand the mol. wt. distribution. The catalyst is prepd. by (a) combining (I) a vadadium cpd. with (II) RnAl (OR)3-n (where R is 1-12C hydrocarbyl; and n is 0.5-2.0), (b) combining the prod. with (III) a trialkylaluminium, and (c) depositing the prod. on (IV), a support. Efficient control of the mol. wt. distribution without any change in the catalyst compsn. is achieved. Polymers for a particular end use can be prepd., e.g. for injection moulding or blow moulding.
FR7513703A 1974-05-01 1975-04-30 Controlling molecular distribution of ethylene (co)polymers - by controlling temp of polymerisation effected with Ziegler catalyst-hydrogen Granted FR2269541A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US46597574A 1974-05-01 1974-05-01

Publications (2)

Publication Number Publication Date
FR2269541A1 true FR2269541A1 (en) 1975-11-28
FR2269541B3 FR2269541B3 (en) 1978-11-17

Family

ID=23849936

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7513703A Granted FR2269541A1 (en) 1974-05-01 1975-04-30 Controlling molecular distribution of ethylene (co)polymers - by controlling temp of polymerisation effected with Ziegler catalyst-hydrogen

Country Status (6)

Country Link
JP (1) JPS50146691A (en)
BE (1) BE828598A (en)
DE (1) DE2519387A1 (en)
FR (1) FR2269541A1 (en)
IT (1) IT1037765B (en)
NL (1) NL7505002A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0439838A2 (en) * 1989-12-29 1991-08-07 Union Carbide Chemicals And Plastics Company, Inc. Catalyst for regulating the molecular weight distribution of ethylene polymers
US8227552B2 (en) 2007-02-05 2012-07-24 Univation Technologies, Llc Methods of controlling polymer properties
US10954328B2 (en) 2017-11-15 2021-03-23 Exxonmobil Chemical Patents Inc. Polymerization processes
US11015002B2 (en) 2017-11-15 2021-05-25 Exxonmobil Chemical Patents Inc. Polymerization processes
US11111325B2 (en) 2017-11-15 2021-09-07 Exxonmobil Chemical Patents Inc. Polymerization processes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1193358B (en) * 1980-01-18 1988-06-15 Montedison Spa COMPONENTS OF CATALYSTS FOR THE POLYMERIZATION OF ALPHA-OLEFINS AND CATALYSTS FROM THEM OBTAINED

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0439838A2 (en) * 1989-12-29 1991-08-07 Union Carbide Chemicals And Plastics Company, Inc. Catalyst for regulating the molecular weight distribution of ethylene polymers
EP0439838A3 (en) * 1989-12-29 1992-02-12 Union Carbide Chemicals And Plastics Company, Inc. Catalyst for regulating the molecular weight distribution of ethylene polymers
US8227552B2 (en) 2007-02-05 2012-07-24 Univation Technologies, Llc Methods of controlling polymer properties
US8497329B2 (en) 2007-02-05 2013-07-30 Univation Technologies, Llc Methods of controlling polymer properties
US10954328B2 (en) 2017-11-15 2021-03-23 Exxonmobil Chemical Patents Inc. Polymerization processes
US11015002B2 (en) 2017-11-15 2021-05-25 Exxonmobil Chemical Patents Inc. Polymerization processes
US11111325B2 (en) 2017-11-15 2021-09-07 Exxonmobil Chemical Patents Inc. Polymerization processes

Also Published As

Publication number Publication date
IT1037765B (en) 1979-11-20
DE2519387A1 (en) 1975-11-13
JPS50146691A (en) 1975-11-25
FR2269541B3 (en) 1978-11-17
NL7505002A (en) 1975-11-04
BE828598A (en) 1975-10-30

Similar Documents

Publication Publication Date Title
ES475690A1 (en) Chromium-containing catalyst, process for its preparation with sulfur treatment and use thereof in olefin polymerization.
MY108973A (en) Polyethylene copolymer and polymerization process
CA2138572A1 (en) Production of Polyolefins Containing Long Chain Branches by a Gas Phase Process
DE3475789D1 (en) Process for preparing a hydrocarbon active solid to be used in the polymerisation of olefines, and process for synthesising an olefinic polymer or copolymer using said hydrocarbon active solid as a catalyst
DE69709849D1 (en) METHOD FOR PRODUCING POLYETHYLENE WITH A WIDE MOLECULAR WEIGHT DISTRIBUTION AND A CATALYST SYSTEM USED THEREFORE
DE69822746D1 (en) Manufacture of polyethylene with a broad molecular weight distribution
ZA936694B (en) Polyolefin molding composition for the production of moldings of high rigidity and transparency by injection molding
JPS6414018A (en) Stretch packaging film
CA2147589A1 (en) Process for production of cyclic olefin copolymer and copolymer produced by said process
FR2269541A1 (en) Controlling molecular distribution of ethylene (co)polymers - by controlling temp of polymerisation effected with Ziegler catalyst-hydrogen
KR890008182A (en) Propylene polymers with extremely high melt flow rates and methods for their preparation
NO895215D0 (en) PROCESS FOR GAS PHASE POLYMERIZATION OF ALFA OLEFINES
NO179285C (en) Process for gas phase polymerization of alpha-olefins
GB1441115A (en) Process for the preparation of ethylene polymers of controlled density
KR860004083A (en) Process for preparing ethylene / l-butene copolymer
FR2738829B1 (en) PREPOLYMER FOR THE POLYMERIZATION OF OLEFINS, COMBINING MULTIPLE SOLID CATALYTIC COMPONENTS
GB1010739A (en) Olefin copolymers
GB1438722A (en) Production of polyethylenes
GB1101987A (en) Crystalline copolymers
GB858584A (en) Improved copolymers of ethylene and higher l-olefins and method for the production thereof
JPS51132291A (en) A process for polymerizing ethylene
GB1076038A (en) Process for the manufacture of olefine copolymers
KR790000674B1 (en) Process for producting polyethylene
BE776301A (en) Olefins polymerise catalyst - by reducing transition metal cpd with organomagnesium cpd and activating with trialkylaluminium pl
FR2167398A1 (en) High pressure polyethylene prepn - using ziegler catalyst

Legal Events

Date Code Title Description
ST Notification of lapse