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2 185 881

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IPC

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Application

2001106797/04, 2001-03-13

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Start date

2001-03-13

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Actual filing date

2001-03-13

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Published

2002-07-27

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Inventor

Sergeev S.A.Bukatov G.D.Zakharov V.A.Gornostaev V.V.Korolev S.V.Vlasov A.V.Kuznetsov V.L.Tikhonov I.B.Zykov V.V.Shabalin E.Ju.

(73)

Holder

Institut Kataliza Im. G.K. Boreskova So Ran

METHOD OF PREPARING CATALYST FOR STEREOSPECIFIC POLYMERIZATION OF PROPYLENE Russian patent published in 2002 - IPC

Abstract RU 2185881 C1

FIELD: polymerization catalysts. SUBSTANCE: catalyst is prepared by reducing titanium tetrachloride by diethylaluminum chloride in presence of electronodonor compounds, in particular by reaction of complex TiCl₄•nD•mD₂ with complex Al(C₂H₅)₂Cl•kD₂, where D₁ represents diisoamyl ether, D₂ dibutyl ether, n = 0.1-0.4, m ≤ 0.2, and k = 0.7-2.2. Use of catalyst results in formation of polypropylene with lower content of side atactic fraction and polypropylene powder has higher apparent density and contains less dust-like fraction. EFFECT: increased catalytic activity and stereospecificity. 8 ex

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RU 2 185 881 C1

Authors

Sergeev S.A.

Bukatov G.D.

Zakharov V.A.

Gornostaev V.V.

Korolev S.V.

Vlasov A.V.

Kuznetsov V.L.

Tikhonov I.B.

Zykov V.V.

Shabalin E.Ju.

Dates

2002-07-27—Published

2001-03-13—Filed