High comparative tracking index polycarbonate compositions with improved flame retardant and hydro-stability properties

US12428558B2 · kind B2 · utility

Assignee

• SHPP Global Technologies B.V. · NL

Inventors

• Keran Chen · Shanghai, CN
• Xing Liu · Bergen op Zoom, NL
• Yun Zheng · Shanghai, CN

Key dates

• Filing date: Nov 20, 2024
• Grant date: Sep 30, 2025
• Expiry date: Nov 20, 2044

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2207/53
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polycarbonate compositions include: (a) from about 45 wt % to about 90 wt % of a polycarbonate homopolymer; (b) from about 1 wt % to about 25 wt % of a polycarbonate copolymer; (c) from about 0.1 wt % to about 20 wt % of a first flame retardant component including a brominated flame retardant; (d) from about 0.01 wt % to about 1 wt % of a second flame retardant component including an alkyl sulfonate salt, an aromatic sulfone sulfonate, an aromatic sulfonate salt, or a combination thereof; and (e) from about 0.1 wt % to about 20 wt % of a siloxane-free acrylic core-shell impact modifier. The combined weight percent value of all components does not exceed 100 wt %, and all weight percent values are based on the total weight of the composition.