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2 039 761

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Application

5027387/05, 1991-10-17

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Actual filing date

1991-10-17

(45)

Published

1995-07-20

(72)

Inventor

Rivin Eh.M.Skul'Skij A.S.Molodyka A.V.Nefedov E.S.Pauchenko E.V.Chechulina O.P.Ryl'Kov A.A.Rachinskij A.V.

(73)

Holder

Voronezhskij Filial Gosudarstvennogo Proektnogo I Nauchno-Issledovatel'Skogo Instituta Promyshlennosti Sinteticheskogo Kauchuka

METHOD OF SYNTHESIS OF DIENE-STYRENE COPOLYMERS Russian patent published in 1995 - IPC

Abstract RU 2039761 C1

FIELD: synthetic rubber industry. SUBSTANCE: method involves copolymerization of conjugated dienes with styrene in solvent medium consisting of 25% benzine and 75% cyclohexane in the presence of butyllithium. Copolymers were isolated by method of water degassing involving solvent rectification and its recovering to copolymerization. Vat residues of solvent rectification containing 20.8-23.9% high-boiling component, 68.4-73.3% solvent, 1.7-2.5% styrene and 4.2-5.2% antioxidant were fed to the mixing with copolymerizate before water degassing. EFFECT: improved method of copolymer synthesis. 1 dwg, 3 tbl

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RU 2 039 761 C1

Authors

Rivin Eh.M.

Skul'Skij A.S.

Molodyka A.V.

Nefedov E.S.

Pauchenko E.V.

Chechulina O.P.

Ryl'Kov A.A.

Rachinskij A.V.

Dates

1995-07-20—Published

1991-10-17—Filed

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