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2 061 546

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IPC

(21) (22)

Application

94039382/04, 1994-10-19

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Actual filing date

1994-10-19

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Published

1996-06-10

(72)

Inventor

Bodrova V.S.Kormer V.A.Piskareva E.P.Poletaeva I.A.Shelokhneva L.F.Bazhenov Ju.P.Kutuzov P.I.Rakhimov R.Kh.Klepikova V.I.

(73)

Holder

Gosudarstvennoe Predprijatie Nauchno-Issledovatel'Skij Institut Sinteticheskogo Kauchuka Im.Akad.S.V.LebedevaAktsionernoe Obshchestvo

METHOD OF PRODUCING CATALYST FOR ISOPRENE POLYMERIZATION Russian patent published in 1996 - IPC

Abstract RU 2061546 C1

FIELD: catalysts, rubber industry. SUBSTANCE: proposed method involves the mixing lanthanide chloride solvate with monohydric alcohol and preliminary prepared interaction product of triisobutyl aluminium with water (the latter is prepared at (-5-10) C at mole ratio aluminium : water = 2:1) in piperylene as hydrocarbon solvent. Interaction is carried out at (-5-40) C at mole ratio aluminium : piperylene : lanthanide = (10-20):(18-25):1 and then reaction mixture is kept at the room temperature for 6-15 hr. Catalyst is homogeneous solution that ensures to obtain polyisoprene at high yield at content of cis-1,4-structures 98.1-98.6% and polydispersion coefficient 2.1-2.8. Invention can be used in synthetic rubber industry. EFFECT: enhanced catalytic activity and stereoselectivity, simplified process. 1 tbl

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RU 2 061 546 C1

Authors

Bodrova V.S.

Kormer V.A.

Piskareva E.P.

Poletaeva I.A.

Shelokhneva L.F.

Bazhenov Ju.P.

Kutuzov P.I.

Rakhimov R.Kh.

Klepikova V.I.

Dates

1996-06-10—Published

1994-10-19—Filed