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2 139 295

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Application

98110169/04, 1998-05-20

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Start date

1998-05-20

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Actual filing date

1998-05-20

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Published

1999-10-10

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Inventor

Aksenov V.I.Golovina N.A.Zolotarev V.L.Grunin G.N.Ezhova E.A.Grishchenko A.I.Nesmelov A.I.Murachev V.B.Byrikhin V.S.Kolokol'Nikov A.S.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Zavod Sinteticheskogo Kauchuka"

METHOD OF PREPARING POLYISOBUTYLENE Russian patent published in 1999 - IPC

Abstract RU 2139295 C1

FIELD: chemical industry. SUBSTANCE: polyisobutylene is prepared by polymerization of isobutylene at temperatures ranging from -40 C to +40 C in toluene, in-hexane or isopentane in the presence of catalyst complex preformed from titanium tetrachloride and triisobutyl aluminium at temperatures ranging from -30 C to +30 C at molar ratio from 10 to 0.5 and maintained for 0.1-480 minutes, 0.1- 1.5 mole of titanium compound being used per 100 kg of monomer. EFFECT: narrow molecular weight distribution of polyisobutylene, smaller amounts of catalyst system components and high process rate. 4 ex, 1 tbl

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RU 2 139 295 C1

Authors

Aksenov V.I.

Golovina N.A.

Zolotarev V.L.

Grunin G.N.

Ezhova E.A.

Grishchenko A.I.

Nesmelov A.I.

Murachev V.B.

Byrikhin V.S.

Kolokol'Nikov A.S.

Dates

1999-10-10—Published

1998-05-20—Filed

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