Polycarbonate compositions having improved thermal dimensional stability and high refractive index

US9127119B2 · kind B2 · utility

Assignee

• SABIC GLOBAL TECHNOLOGIES B.V. · NL

Inventors

• Roopali Rai · Savanuru, IN
• Theo Hoeks · Bergen op Zoom, NL
• Jaykisore Pal · Bengaluru, IN
• BG Umesh · Dharwad, IN
• Shantaram Narayan Naik · Savanuru, IN
• Subramanyam Santhanam · Bengaluru, IN
• Shweta Hegde · Bengaluru, IN
• Hariharan Ramalingham · Bengaluru, IN

Key dates

• Filing date: Jan 11, 2013
• Grant date: Sep 8, 2015
• Expiry date: Jan 16, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L69/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Disclosed herein are methods and compositions of polycarbonate compositions having, among other characteristics, improved thermal dimensional stability, hydrolytic stability and high refractive index. The resulting polycarbonate copolymer composition, comprising a polycarbonate and a polysulfone, can be used in the manufacture of articles for optical applications. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.