Polycarbonate-polysiloxane copolymers, methods for the preparation thereof, and articles derived therefrom

US7888447B2 · kind B2 · utility

Assignee

• Sabic Innovative Plastics B.V. · NL

Inventors

• Dibakar Dhara · Bengaluru, IN
• Katherine Glasgow · Wake Forest, US
• Brian D. Mullen · Greenwood, US
• Vikram Kumar
• Mark D. Leatherman · Elmsford, US
• Suresh K. Rajaraman · Newburgh, US
• Anubhav Saxena · Bengaluru, IN

Key dates

• Filing date: Mar 29, 2007
• Grant date: Feb 15, 2011
• Expiry date: Jun 20, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L83/10
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A polycarbonate-polysiloxane copolymer comprising structural units of the formula:wherein each R1, R2, and R3 is independently the same or different monovalent C1-12 should this be C1-C13 like in the document? hydrocarbon group, G comprises a monovalent C6-1000 poly(oxyalkyl) group, each R4 and R5 taken together is independently the same or different divalent C3-30 hydrocarbon linking group wherein R4 is a C1-28 hydrocarbon and R5 is a C2-29 aliphatic group, a is 0 or greater, and b is one or greater; and structural units of the formula:wherein each R is independently the same or different C6-60 divalent hydrocarbon group, and at least 60% of the R groups comprise aromatic moieties.