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2 091 396

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Application

95105681/04, 1995-04-12

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Actual filing date

1995-04-12

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Published

1997-09-27

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Inventor

Aksenov V.I.Golovina N.A.Grishchenko A.I.Grunin G.N.Gol'Berg I.P.Khlustikov V.I.Byrikhin V.S.Nesmelov A.I.Murachev V.B.Ezhova E.A.Zolotarev V.L.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa Zavod Sinteticheskogo Kauchuka"

METHOD OF PREPARING POLYISOBUTYLENE Russian patent published in 1997 - IPC

Abstract RU 2091396 C1

FIELD: preparation of polymeric materials. SUBSTANCE: polyisobutylene having low molecular weight is prepared by polymerization of isobutylene in toluene at 0-60 C. The catalyst is titanium tetrachloride or titanium tetrachloride and trialkyl aluminium at titanium to aluminium molar ratio of 1-100. Amount of titanium tetrachloride is 0.1-2.5 moles per 100 kg of monomer. 10-50 wt % of its total amount are first introduced followed by portionwise addition of the remaining isobutylene and polymerization thereof at temperature given above. Each subsequent portion is added at conversion of at least 90%, and process is carried out to final polymer content of 50-80 wt % in solution. EFFECT: more efficient preparation method. 1 tbl

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RU 2 091 396 C1

Authors

Aksenov V.I.

Golovina N.A.

Grishchenko A.I.

Grunin G.N.

Gol'Berg I.P.

Khlustikov V.I.

Byrikhin V.S.

Nesmelov A.I.

Murachev V.B.

Ezhova E.A.

Zolotarev V.L.

Dates

1997-09-27—Published

1995-04-12—Filed

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