Reinforced flame retardant polycarbonate composition and molded article comprising same

US10030139B2 · kind B2 · utility

Assignee

• SABIC GLOBAL TECHNOLOGIES B.V. · NL

Inventors

• Paul Michael Atkinson · West Chester, US
• Xiaoyu Sun · Evansville, US
• Ying Li · Hubei, CN
• Pei Sun · Shanghai, CN
• Dake Shen · Zhuqiao, CN
• Huanbing Wang · Shanghai, CN
• Hongtao Shi · Shanghai, CN

Key dates

• Filing date: Jul 17, 2017
• Grant date: Jul 24, 2018
• Expiry date: Jul 17, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2205/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A polymer composition includes: about 20 wt % to about 80 wt % of a polycarbonate polymer; about 1 wt % to about 20 wt % of a polycarbonate-siloxane copolymer; about 15 wt % to about 35 wt % of a reinforcing filler having a tensile modulus of at least about 150 GPa; and about 4 wt % to about 20 wt % of a flame retardant comprising phosphorous. The polymer composition demonstrates a flexural modulus in an amount equal to or greater than about 10 GPa. Methods of forming a polymer composition and blended thermoplastic compositions are also described.