TRANSPARENT POLYCARBONATE-POLYSILOXANE COPOLYMER BLEND, METHOD FOR THE PREPARATION THEREOF, AND ARTICLE DERIVED THEREFROM

A composition includes a polycarbonate-polysiloxane block copolymer that has at least one polycarbonate block and at least one polysiloxane block, and a surface modifying agent that includes at least one polysiloxane segment. Increased levels of the surface modifying agent can be incorporated withou...

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Bibliographic Details
Main Authors ZERDA, ADAM, KUMAR, VIKRAM, PIXTON, MATTHEW, ROBERT, GLASGOW, KATHERINE, DHARA, DIBAKAR
Format Patent
LanguageEnglish
French
Published 09.06.2005
Edition7
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:A composition includes a polycarbonate-polysiloxane block copolymer that has at least one polycarbonate block and at least one polysiloxane block, and a surface modifying agent that includes at least one polysiloxane segment. Increased levels of the surface modifying agent can be incorporated without compromising high transmittance and low haze. The compositions also exhibit improved hemocompatibility and are therefore useful for a variety of articles that may contact blood. L'invention concerne des compositions contenant un copolymère séquencé de polycarbonate-polysiloxane comprenant au moins un bloque polysiloxane et un agent de modification de surface renfermant au moins un segment polysiloxane. Des niveaux supérieurs d'agent de modification de surface peuvent être intégrés sans compromettre la haute transmittance et une opacité réduite. Les compositions présentent également une hémocompatibilé améliorée et sont par conséquent utiles dans une variété d'articles pouvant venir au contact du sang.
Bibliography:Application Number: WO2004US34660