TW357158B - Process for the polymerization of ethylene with propylene and optionally another diene - Google Patents

Process for the polymerization of ethylene with propylene and optionally another diene

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Publication number
TW357158B
TW357158B TW084112424A TW84112424A TW357158B TW 357158 B TW357158 B TW 357158B TW 084112424 A TW084112424 A TW 084112424A TW 84112424 A TW84112424 A TW 84112424A TW 357158 B TW357158 B TW 357158B
Authority
TW
Taiwan
Prior art keywords
vanadium
ethylene
propylene
reaction container
catalyst containing
Prior art date
Application number
TW084112424A
Other languages
Chinese (zh)
Inventor
Tiziano Tanaglia
Gianni Loberti
Original Assignee
Enichem Elastomers
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 Enichem Elastomers filed Critical Enichem Elastomers
Application granted granted Critical
Publication of TW357158B publication Critical patent/TW357158B/en

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  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Abstract

Process for the polymerization of ethylene with propylene and optionally another diene comprizing: (1) feeding liquid propylene or propylene in suspension medium of a saturated hydrocarbon into a reaction container, (2) thermostat-regulating the reaction container at a temperature between -5 DEG C and 65 DEG C, (3) continuously saturating the reaction container with ethylene to keep a total pressure in the container between 5-30 bars, (4) feeding into the reaction container a catalyst containing vanadium and a cocatalyst basically consisting of an organic compound of aluminum with a molar ratio of cocatalyst to vanadium from 5 to 100 and optionally a halogenated promoter, and characterized in that the catalyst containing vanadium is supported on an inert matrix and is prepared by: (a) impregnation of an inert support with a solution, in hydrocarbons or halohydrocarbons, of a vanadium tri-acetylacetonate; (b) possible removal, from the impregnated support obtained in step (a), of the solvent used in step (a); (c) treatment of the inert material impregnated with vanadium of step (a) or (b), with a hydrocarbon solution of a compound having general formula (I) RnAlXm, wherein R is a C1-C20 alkyl radical, X is a halogen, n+m=3, and m is an integer from 0 to 2, the above step (c) being carried out in an atmosphere of ethylene or alpha-olefins, the molar ratio between aluminum of step (c) and vanadium tri-acetylacetonate of step (a) being between 1/1 and 6/1; (d) separation and purification of the catalyst containing vanadium obtained in step (c).
TW084112424A 1994-12-15 1995-11-22 Process for the polymerization of ethylene with propylene and optionally another diene TW357158B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT9402528 1994-12-15

Publications (1)

Publication Number Publication Date
TW357158B true TW357158B (en) 1999-05-01

Family

ID=57940393

Family Applications (1)

Application Number Title Priority Date Filing Date
TW084112424A TW357158B (en) 1994-12-15 1995-11-22 Process for the polymerization of ethylene with propylene and optionally another diene

Country Status (1)

Country Link
TW (1) TW357158B (en)

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MM4A Annulment or lapse of patent due to non-payment of fees