Flame retardant composition comprising a polysiloxane
US12331189B2 · kind B2 · utility
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11References
14Claims
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Key dates
| Filing date | Aug 23, 2019 |
| Grant date | Jun 17, 2025 |
| Priority date | — |
| Expiry date | Apr 4, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2201/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
In an embodiment, a flame retardant composition comprises 60 to 95 wt % of a polycarbonate: a poly siloxane comprising a repeat unit of the formula (7): wherein the composition comprises 0.5 to 2 wt % of the repeat unit of the formula (7) of the polysiloxane: wherein the polysiloxane is free of one or both of a vinyl graft and repeat units derived from a vinyl monomer: 9 to 18 wt % of talc: 5 to 15 wt % of a phosphorus containing flame retardant: 0 to 1 wt % of a phosphite stabilizer; and 0.1 to 2 wt % of an anti-drip agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.