GB1205635A - Polymerisation of ethylene - Google Patents

Polymerisation of ethylene

Info

Publication number
GB1205635A
GB1205635A GB2218467A GB2218467A GB1205635A GB 1205635 A GB1205635 A GB 1205635A GB 2218467 A GB2218467 A GB 2218467A GB 2218467 A GB2218467 A GB 2218467A GB 1205635 A GB1205635 A GB 1205635A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
zone
initiator
temperature
ethylene
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.)
Expired
Application number
GB2218467A
Inventor
Jeffrey Chester Greaves
William George Oakes
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

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F295/00Macromolecular compounds obtained by polymerisation using successively different catalyst types without deactivating the intermediate polymer
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F10/00Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F255/00Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00
    • C08F255/02Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00 on to polymers of olefins having two or three carbon atoms

Abstract

1,205,635. Ethylene polymerization. IMPERIAL CHEMICAL INDUSTRIES Ltd. 29 April, 1968 [12 May, 1967], No. 22184/67. Heading C3P. The continuous polymerization of ethylene in two or more zones comprises passing ethylene through a first polymerization zone at a pressure of not less than 1600 atmospheres and a temperature of not less than 125‹ C. in the presence of a Ziegler type initiator and passing the mixture of polymer and unreacted monomer to a second zone at a pressure of at least 1600 atmospheres and a temperature higher than the lowest temperature in the first zone in the presence of a free-radical forming initiator, the combined conditions of temperature and pressure being such that the polymerization reaction takes place in a single fluid phase and the reaction mixture remains as a single fluid phase until removal from said zone. In the first zone the temperature is preferably from 145‹ to 220‹ C., and the residence time is not more than 6 minutes. A suitable Ziegler type initiator is one which causes at least 3,000 moles of ethylene to be polymerized per mole of Group 4A, 5A or 6A metal compound component of the initiator. The Ziegler type initiator which may have a particle size not exceeding 5 microns, may be protracted by polymerizing it in contact with an unbranched α-olefin containing at least 6 carbon atoms. A free radical forming initiator active at the temperature of the first zone, may be introduced into the first zone. Chain transfer agents, such as hydrogen, paraffins or α-olefins, may be present in the zones. In the example, ethylene containing hydrogen as a modifier, is polymerized in a two zone reaction. The Ziegler initiator was formed by mixing in pentamethyl heptane, aluminium diethyl chloride and titanium trichloride, and exposing this mixture to hexene-1, resulting in the formation on the catalyst of polyhexene. The free radical forming catalyst was tertiary butyl perbenzoate.
GB2218467A 1967-05-12 1967-05-12 Polymerisation of ethylene Expired GB1205635A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2218467A GB1205635A (en) 1967-05-12 1967-05-12 Polymerisation of ethylene

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB2218467A GB1205635A (en) 1967-05-12 1967-05-12 Polymerisation of ethylene
NL6806722A NL6806722A (en) 1967-05-12 1968-05-10
BE715028A BE715028A (en) 1967-05-12 1968-05-10
FR1578947A FR1578947A (en) 1967-05-12 1968-05-10
ES353811A ES353811A1 (en) 1967-05-12 1968-05-11 continuous process for the polymerization of ethylene.

Publications (1)

Publication Number Publication Date
GB1205635A true true GB1205635A (en) 1970-09-16

Family

ID=10175317

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2218467A Expired GB1205635A (en) 1967-05-12 1967-05-12 Polymerisation of ethylene

Country Status (5)

Country Link
BE (1) BE715028A (en)
ES (1) ES353811A1 (en)
FR (1) FR1578947A (en)
GB (1) GB1205635A (en)
NL (1) NL6806722A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0107105A1 (en) * 1982-09-30 1984-05-02 Union Carbide Corporation Direct conversion of a polymerization reaction catalyzed by a Ziegler-type catalyst into one catalyzed by a chromium-based catalyst
US4486579A (en) * 1981-12-24 1984-12-04 Societe Chimique Des Charbonnages Modified copolymers of ethylene and α-olefins and a process for their preparation
US6762254B1 (en) * 1999-05-17 2004-07-13 Basf Aktiengesellschaft Ethylene(meth)acrylate copolymers with low residual content in comonomers
WO2004108782A1 (en) * 2003-06-06 2004-12-16 Basf Aktiengesellschaft Method for the production of an aqueous polymer dispersion
WO2008136849A1 (en) * 2007-05-02 2008-11-13 Dow Global Technologies Inc. High-density polyethylene compositions, method of making the same, injection molded articles made therefrom, and method of making such articles
WO2012074812A1 (en) 2010-12-03 2012-06-07 Dow Global Technologies Llc Processes to prepare ethylene-based polymer compositions
CN104507981A (en) * 2012-06-01 2015-04-08 陶氏环球技术有限责任公司 Free-radical processes to make ethylene-based polymers using alklyated phenols

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2482111B1 (en) * 1980-05-06 1982-05-21 Charbonnages Ste Chimique

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4486579A (en) * 1981-12-24 1984-12-04 Societe Chimique Des Charbonnages Modified copolymers of ethylene and α-olefins and a process for their preparation
EP0107105A1 (en) * 1982-09-30 1984-05-02 Union Carbide Corporation Direct conversion of a polymerization reaction catalyzed by a Ziegler-type catalyst into one catalyzed by a chromium-based catalyst
US6762254B1 (en) * 1999-05-17 2004-07-13 Basf Aktiengesellschaft Ethylene(meth)acrylate copolymers with low residual content in comonomers
WO2004108782A1 (en) * 2003-06-06 2004-12-16 Basf Aktiengesellschaft Method for the production of an aqueous polymer dispersion
US8013085B2 (en) 2003-06-06 2011-09-06 Basf Aktiengesellschaft Method for the production of an aqueous polymer dispersion
WO2008136849A1 (en) * 2007-05-02 2008-11-13 Dow Global Technologies Inc. High-density polyethylene compositions, method of making the same, injection molded articles made therefrom, and method of making such articles
RU2464287C2 (en) * 2007-05-02 2012-10-20 ДАУ ГЛОБАЛ ТЕКНОЛОДЖИЗ ЭлЭлСи High-density polyethylene-based compositions, methods for production thereof, articles moulded therefrom and method of obtaining said articles
US9045628B2 (en) * 2010-12-03 2015-06-02 Dow Global Technologies Llc Processes to prepare ethylene-based polymer compositions
WO2012074812A1 (en) 2010-12-03 2012-06-07 Dow Global Technologies Llc Processes to prepare ethylene-based polymer compositions
EP2813545A1 (en) 2010-12-03 2014-12-17 Dow Global Technologies LLC Processes to prepare ethylene-based polymer compositions
CN103339186B (en) * 2010-12-03 2016-03-30 陶氏环球技术有限责任公司 The method of ethylene-based polymer compositions prepared
US20130253126A1 (en) * 2010-12-03 2013-09-26 Dow Global Technologies Llc Processes to prepare ethylene-based polymer compositions
US20150148504A1 (en) * 2012-06-01 2015-05-28 Dow Global Technologies Llc Free-radical processes to make ethylene-based polymers using alklyated phenols
JP2015524854A (en) * 2012-06-01 2015-08-27 ダウ グローバル テクノロジーズ エルエルシー Free radical process for making an ethylene-based polymer using the alkylated phenol
CN104507981A (en) * 2012-06-01 2015-04-08 陶氏环球技术有限责任公司 Free-radical processes to make ethylene-based polymers using alklyated phenols
US9328180B2 (en) * 2012-06-01 2016-05-03 Dow Global Technologies Llc Free-radical processes to make ethylene-based polymers using alklyated phenols
CN104507981B (en) * 2012-06-01 2017-09-05 陶氏环球技术有限责任公司 The method of preparing the radical polymer based on the use of ethylene-alkylated phenol

Also Published As

Publication number Publication date Type
FR1578947A (en) 1969-08-22 grant
ES353811A1 (en) 1969-10-16 application
NL6806722A (en) 1968-11-13 application
BE715028A (en) 1968-11-12 grant

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees