Back to results
US 4,735,978 AGranted
Flame retardant polycarbonate composition
AssigneeGeneral Electric Company
InventorToshio Ishihara
Life of this patent
Estimating the term…
Abstract
A flame retardant polycarbonate composition, comprising in admixture: an aromatic polycarbonate resin, an ortho-methyl substituted aromatic dihydroxy compound, and an additional flame retardant additive, said ortho-methyl substituted aromatic dihydroxy compound and said additional flame retardant additive being present in an amount sufficient to improve the flame retardant properties of said aromatic polycarbonate resin.
Claims11
A flame retardant polycarbonate composition, comprising in admixture:
- an aromatic polycarbonate resin, an ortho-methyl derivativeof 2,2-bis(4-hydroxyphenyl) propane, and at least one additional flame retardant additive selected from the group consisting of an alkali metal or alkaline earth metal salt of an aromatic sulfonate, an alkali metal or alkaline earth metal salt of an aromatic sulfonesulfonate, an alkali metal or alkaline earth metal salt of a perfluoroalkyl sulfonate, and mixtures thereof, said orthomethyl derivative of 2,2-bis(4-hydroxyphenyl) propane and said additional flame retardant additive being present in an amount sufficient to improve the flame retardant properties of said aromatic polycarbonate resin.
Dependencies are inferred from the claim text.