METHOD OF PREPARING HYDROSILYLATION REACTION CATALYST

FIELD: heteroorganic synthesis catalysts. SUBSTANCE: hydrosilylation catalyst used in production of alkylsilanes is prepared through reaction of platinumhydrochloric acid with alkenylpolysiloxanes and cyclosiloxanes in solvent at elevated temperature and stirring, vinylsiloxane unit-to-platinum rati...

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Bibliographische Detailangaben
Hauptverfasser:	NIKOLAEV G.A, KORMER V.A, LOBKOV V.D, KHOROSHAVINA JU.V
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	FIELD: heteroorganic synthesis catalysts. SUBSTANCE: hydrosilylation catalyst used in production of alkylsilanes is prepared through reaction of platinumhydrochloric acid with alkenylpolysiloxanes and cyclosiloxanes in solvent at elevated temperature and stirring, vinylsiloxane unit-to-platinum ratio being (40-50):1, followed by adding sodium bicarbonate at ambient temperature of reaction mixture. Most preferable cyclosiloxane is compound of following formula: , in which R' represents ethyl, fluoroethyl, or phenyl; R represents R' or methyl; n=1-3; m=1-3; and n+m=3 or 4. EFFECT: increased catalyst activity and prolonged its storage time by 2 1/2 to 3 times. 1 tbl, 8 ex