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Application

3886841/04, 1985-03-11

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Actual filing date

1985-03-11

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Published

1997-11-10

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Inventor

Zakharov V.A.Mikenas T.B.Makhtarulin S.I.Nikitin V.E.Smolin S.V.Ivanova T.M.Tolstov G.P.Kajmashnikov V.M.Gomenjuk V.Ja.Balashov V.V.Ivanchev S.S.Grigor'Ev V.A.Korotkov S.I.

ETHYLENE POLYMERIZATION CATALYST AND METHOD OF PREPARATION THEREOF Russian patent published in 1997 - IPC

Abstract SU 1269330 A1

FIELD: catalysts for olefin polymerization processes. SUBSTANCE: catalyst for polymerization of ethylene containing titanium tetrachloride on magnesium-containing carrier being interaction product of magnesium and alkyl chloride in hydrocarbon medium and containing magnesium, chlorine, and hydrocarbon polymer moiety, is distinguished by carrier's additionally incorporating aluminum with following carrier makeup (wt %): magnesium, 20.1-23.1; aluminum, 0.5- 2.9; polymer moiety, 3.0-14.0; and chlorine, the balance. In this case, titanium tetrachloride content in catalyst is 1.0-8.0 wt %. In a method of preparing catalyst by interaction of magnesium with alkyl (ethyl or butyl) chloride in hydrocarbon medium followed by applying titanium tetrachloride onto so formed magnesium-containing carrier, distinguishing feature resides in that magnesium-alkyl chloride interaction is carried out at alkyl chloride to magnesium molar ratio 1.3-1.9 followed by treating organomagnesium product obtained by ethylaluminum chloride with formula EtxAl3-x where x = 1-2, at molar ratio of the latter to the former 1-2. To increase polymer melt index, titanium tetrachloride is applied onto carrier in presence of tetrahydrofuran. EFFECT: increased cat activity.

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SU 1 269 330 A1

Authors

Zakharov V.A.

Mikenas T.B.

Makhtarulin S.I.

Nikitin V.E.

Smolin S.V.

Ivanova T.M.

Tolstov G.P.

Kajmashnikov V.M.

Gomenjuk V.Ja.

Balashov V.V.

Ivanchev S.S.

Grigor'Ev V.A.

Korotkov S.I.

Dates

1997-11-10—Published

1985-03-11—Filed

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