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Application

98114385/04, 1998-07-14

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Start date

1998-07-14

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Actual filing date

1998-07-14

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Published

2000-06-27

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Inventor

Glukhovskoj V.S.Litvin Ju.A.Kretinina E.S.Mitin I.P.Sviridov S.N.Fil' V.G.Kudrjavtsev L.D.Molodyka A.V.Privalov V.A.

(73)

Holder

Gosudarstvennoe Predprijatie Institut Sinteticheskogo Kauchuka Im. Akademika S.V.Lebedeva"

METHOD OF PREPARING COMPLEX OF ETHYL LITHIUM WITH ORGANIC COMPOUND SOLUBLE IN ORGANIC SOLVENTS Russian patent published in 2000 - IPC

Abstract RU 2151771 C1

FIELD: polymerization catalysts. SUBSTANCE: complex useful as catalyst for copolymerization of dienes and vinylaromatic monomers is prepared by interaction of ethyl chloride with fine dispersion of lithium and organic compound under inert gas atmosphere at stirring, said organic compound being a monomer selected from group including: ethylene, butadiene, isoprene, piperylene, styrene, and butadiene-styrene mixture. Reaction is carried out in two steps. Ethyl chloride is first mixed with lithium dispersion at molar ratio 1: (2.05-2.10) and reaction proceeds at 50-60 C. In the second step, above-mentioned monomer is added to reaction mixture at monomer-to-lithium chloride molar ratio (0.25-1.00):1. EFFECT: improved ecological characteristics of process and extended resource of raw materials for preparation of polymerization catalysts. 2 tbl, 13 ex

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RU 2 151 771 C1

Authors

Glukhovskoj V.S.

Litvin Ju.A.

Kretinina E.S.

Mitin I.P.

Sviridov S.N.

Fil' V.G.

Kudrjavtsev L.D.

Molodyka A.V.

Privalov V.A.

Dates

2000-06-27—Published

1998-07-14—Filed

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