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2 061 704

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IPC

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Application

5066577/04, 1992-09-30

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Actual filing date

1992-09-30

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Published

1996-06-10

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Inventor

Shmagin V.P.Tverdov A.I.Ivanova V.P.Kornilova T.A.Vysotskaja T.B.Rjazanova A.I.Kruglikova T.V.Kulikov V.V.Maksimov M.N.Basov B.K.Zolotarev V.L.Gol'Berg I.P.Khlustikov V.I.Aksenov V.I.

(73)

Holder

Nauchno-Issledovatel'Skij Institut Sinteticheskogo Kauchuka Im. Akad. S.V.Lebedeva

METHOD FOR PRODUCTION OF POLYDIENES Russian patent published in 1996 - IPC

Abstract RU 2061704 C1

FIELD: production of synthetic rubber. SUBSTANCE: butadiene-1,3 or isoprene are polymerized in the medium of hydrocarbon solvent. The process is carried out in the presence of anionic initiator. Said initiator contains: (1) organomagnesium compound having formula C₄-C₁₀-dialkyl magnesium or product of interaction of magnesium with butadiene-1,3, isoprene or pentadiene-1,3 and (2) organosodium compound. Molar ratio of compound 1 and 2 is 0.1:1.0-10:1. Preliminary complex of compound 2 with isoprene is prepared in polymerization zone in the medium of hydrocarbon solvent. Then compound 1 is added. Mentioned above organosodium compound has formula RONa where R represents C₁-C₁₀-alkyl or -R′O(CH₂)_n where R′ - C₁- C₄-alkyl, n=2-4. EFFECT: improves efficiency of method.

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RU 2 061 704 C1

Authors

Shmagin V.P.

Tverdov A.I.

Ivanova V.P.

Kornilova T.A.

Vysotskaja T.B.

Rjazanova A.I.

Kruglikova T.V.

Kulikov V.V.

Maksimov M.N.

Basov B.K.

Zolotarev V.L.

Gol'Berg I.P.

Khlustikov V.I.

Aksenov V.I.

Dates

1996-06-10—Published

1992-09-30—Filed