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2 091 400

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IPC

(21) (22)

Application

2266621/04, 1979-11-01

(22)

Actual filing date

1979-11-01

(45)

Published

1997-09-27

(72)

Inventor

Bubnova S.V.Andreev V.A.Buder S.A.Vasil'Ev V.A.Kovalev N.F.Kormer V.A.Korotkevich B.S.Lileeva A.K.Lobach M.I.Mandel'Shtam E.Ja.Perfil'Eva M.S.Poletaeva I.A.Tverdov A.I.Shelokhneva L.F.

(73)

Holder

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

METHOD OF PREPARATION OF CIS- 1,4-POLYISOPRENE Russian patent published in 1997 - IPC

Abstract RU 2091400 C1

FIELD: chemistry of polymers. SUBSTANCE: claimed method comprises preparing cis-1,4-polyisoprene by polymerization of isoprene in hydrocarbon solvent in the presence of catalyst. The catalyst is complex comprising triisobutyl aluminium or diisobutyl aluminium hydride, chlorine containing coordination lanthanoid compound having atomic number of 57-60 with conjugated diene. Isoprene solution in aliphatic solvent fed for polymerization further contains, in addition to catalyst, triisobutyl aluminium or diisobutyl aluminium at said compound to lanthanoid compound molar ratio of 1:1 to 30:1. The organic ligans is alcohol or tributyl phosphate and the conjugated diene is piperylene. EFFECT: more efficient preparation method. 5 tbl

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RU 2 091 400 C1

Authors

Bubnova S.V.

Andreev V.A.

Buder S.A.

Vasil'Ev V.A.

Kovalev N.F.

Kormer V.A.

Korotkevich B.S.

Lileeva A.K.

Lobach M.I.

Mandel'Shtam E.Ja.

Perfil'Eva M.S.

Poletaeva I.A.

Tverdov A.I.

Shelokhneva L.F.

Dates

1997-09-27—Published

1979-11-01—Filed