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2004113315/04, 2004-04-29

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Start date

2004-04-29

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Actual filing date

2004-04-29

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Published

2005-08-27

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Inventor

Bataeva L.P.Abramova N.V.Grigoruk Zh.G.Gorbik N.S.Orlov Ju.N.Ivanov I.V.Kuznetsov A.G.Fedotov Ju.I.Lavrinenko N.I.Vol'Skij V.I.Tokar' A.E.

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Ooo

BUTYL RUBBER MANUFACTURING PROCESS Russian patent published in 2005 - IPC

Abstract RU 2259376 C1

FIELD: rubber industry.

SUBSTANCE: process consists in copolymerization of isobutylene with isoprene in organic solvent in presence of catalyst: water-protonated ethylaluminum sesquichloride with summary content of protonated complexes 5 to 45% and ratio of protonated complex based on ethylaluminum dichloride to protonated complex based on diethylaluminum chloride between 0.01:1 and 0.5:1. Organic solvent is a mixture of ethyl chloride and isopentane taken is such proportions that content of the former in total blend attains 23.5 to 40 wt % and resulting butyl rubber does not loose its solubility in medium wherein it is formed. In such case, butyl rubber solution has lowered viscosity so that more complete conversion of monomers in polymerization process is allowed.

EFFECT: increased content of solids in polymerizate and thereby increased productivity of rubber manufacturing process.

2 tbl, 6 ex

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RU 2 259 376 C1

Authors

Bataeva L.P.

Abramova N.V.

Grigoruk Zh.G.

Gorbik N.S.

Orlov Ju.N.

Ivanov I.V.

Kuznetsov A.G.

Fedotov Ju.I.

Lavrinenko N.I.

Vol'Skij V.I.

Tokar' A.E.

Dates

2005-08-27—Published

2004-04-29—Filed

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