BRANCHED POLYGLYCOLS AND BRANCHED POLYETHER FUNCTIONAL ORGANOPOLYSILOXANES AND COATINGS CONTAINING SAME

• Main Authors: FOURNIER, FRANCES, M, WHITMARSH, ROBERT, H, STANGA, MICHAEL, A, VARINEAU, PIERRE, T, FERRITTO, MICHAEL, S, WITUCKI, GERALD, L
• Format: Patent
• Language: English; French
• Published: 05.07.2007
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS

Branched polyglycols and branched polyether functional organopolysiloxanes are disclosed as is a process for making branched polyether functional organopolysiloxanes by reacting an organohydrogensiloxane and a branched polyglycol having an unsaturated group via a hydrosilylation reaction, as well as coating compositions containing branched polyether functional organopolysiloxanes and a binder are disclosed. Coatings resulting from these compositions were more hydrophilic and had improved dirt release properties as compared to coatings containing similar, but un-branched, polyether functional organopolysiloxanes. L'invention concerne des polyglycols ramifiés et des polyorganosiloxanes ayant une fonction polyéther ramifiés ainsi qu'un procédé servant à fabriquer des polyorganosiloxanes ayant une fonction polyéther ramifiés en faisant réagir un organohydrogénosiloxane et un polyglycol ramifié ayant un groupe insaturé via une réaction d'hydrosilylation, ainsi que des compositions de revêtement contenant des polyorganosiloxanes ayant une fonction polyéther ramifiés et un liant. Les revêtements résultant de ces compositions étaient plus hydrophiles et avaient de meilleures propriétés anti-salissure par rapport à des revêtements contenant des polyorganosiloxanes ayant une fonction polyéther similaires mais non ramifiés.