Post-consumer recycled polycarbonate compositions having good ductility and flame retardant properties

A thermoplastic composition with mechanically recycled polycarbonate, polycarbonate-siloxane copolymer, and additives achieves both high flame retardancy and impact strength, addressing the limitations of post-consumer recycled plastics in consumer electronics.

WO2025219917A1PCT designated stage Publication Date: 2025-10-23SHPP GLOBAL TECH BV
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Patent Information

Application Number
PCT/IB2025/054022
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-04-19
Filing Date
2025-04-16
Publication Date
2025-10-23

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Abstract

Thermoplastic compositions include: (a) from about 10 wt% to about 85 wt% of a mechanically recycled polycarbonate; (b) from about 2 wt% to about 15 wt% of a polycarbonate-siloxane (PC-Si) copolymer, wherein the PC-Si copolymer has a siloxane content of at least 25 wt%; (c) from about 0.1 wt% to about 20 wt% of a flame retardant component; (d) from about 0.01 wt% to about 2 wt% of an anti-drip agent comprising polytetrafluoroethylene (PTFE); and (e) from greater than 0 wt% to about 10 wt% talc. 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.
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Citation Information

Patent Citations

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