METHOD OF PREPARING POLYPHENYLSEQUIOXANE POLYDIORGANOSILOXANE BLOCK COPOLYMERS

FIELD: chemical industry. SUBSTANCE: method comprises cohydrolyzing phenyl trichlorosilane and alpha,sigma--bis- chlorosililoligodimethylsiloxane in organic solvent and subsequently treating neutral cohydrolysate in two stages with organic amines in amount of 0.5-5 wt % per polymer. After primary tr...

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Bibliographic Details
Main Authors KOLOKOL'TSEVA I.G, KORMER V.A, DOLGOPLOSK S.B, LOBKOV V.D, ALESKOVSKAJA E.V
Format Patent
LanguageEnglish
Published 10.12.1999
Edition6
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:FIELD: chemical industry. SUBSTANCE: method comprises cohydrolyzing phenyl trichlorosilane and alpha,sigma--bis- chlorosililoligodimethylsiloxane in organic solvent and subsequently treating neutral cohydrolysate in two stages with organic amines in amount of 0.5-5 wt % per polymer. After primary treatment, reaction mixture is concentrated to 30-50 wt % of solution. Concentrated solutions of such block copolymers are useful for forming high- strength film coatings. EFFECT: high physico-mechanical and adhesion properties of the polyphenylsesquioxane polydiorganosiloxane block copolymers. 5 ex, 1 tbl
Bibliography:Application Number: RU19980109011