METHOD OF PREPARING POLYPHENYLSEQUIOXANE POLYDIORGANOSILOXANE BLOCK COPOLYMERS

• Main Authors: KOLOKOL'TSEVA I.G, KORMER V.A, DOLGOPLOSK S.B, LOBKOV V.D, ALESKOVSKAJA E.V
• Format: Patent
• Language: English
• Published: 10.12.1999
• Edition: 6
• 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

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...