BUTYL RUBBER MANUFACTURING PROCESS

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 ethylaluminu...

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Bibliographische Detailangaben
Hauptverfasser:	IVANOV I.V, FEDOTOV JU.I, ORLOV JU.N, TOKAR' A.E, KUZNETSOV A.G, VOL'SKIJ V.I, GRIGORUK ZH.G, BATAEVA L.P, LAVRINENKO N.I, ABRAMOVA N.V, GORBIK N.S
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	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