Flame retardant polycarbonate compositions, methods of manufacture thereof and articles comprising the same
US9018286B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2013 |
| Grant date | Apr 28, 2015 |
| Priority date | — |
| Expiry date | May 23, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed herein is a flame retardant composition comprising 20 to 80 weight percent of a polycarbonate composition; where the polycarbonate composition comprises a polysiloxane-carbonate copolymer; an impact modifier in an amount of 0.5 to 25 weight percent; and 1 to 20 weight percent of a phosphazene compound; where all weight percents are based on the total weight of the flame retardant composition. Disclosed herein too is a method comprising blending 20 to 80 weight percent of a polycarbonate composition; where the polycarbonate composition comprises a polysiloxane-carbonate copolymer; an impact modifier in an amount of 0.5 to 25 weight percent; and 1 to 20 weight percent of a phosphazene compound to produce a flame retardant composition; where all weight percents are based on the total weight of the flame retardant composition; and extruding and molding the flame retardant composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.