Fire-retardant polycarbonate composition
AssigneeTeijin Chemicals, Ltd.
InventorToshimasa Tokuda
Life of this patent
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Abstract
A resin composition having an excellent fire retarding effect is provided which comprises (1) a polycarbonate and (2) as a fire retardant, at least one member of the group consisting of (A) a metal salt of a sulfuric ester of an alcohol, (B) an ether derived from an alkyl alcohol and a phenol and having a metal sulfonate group bonded to the carbon atom of the alkyl group and (C) a polycarbonate having at least one alkali metal sulfonate group bonded to the terminals through alkyl. Addition of a mixture of the component (A) and at least one specified halogen-containing organic compound as the fire retardant to the polycarbonate (1) affords a resin composition having a greater fire retardant effect.
Claims9
A fire retardant resin composition comprising
- (1) a polycarbonate which is the reaction product of a dihydric phenol with either phosgene or a carbonic acid diester, and
- (2) as a fire retardant, at least one compound selected from the group consisting of compounds of the formula ##STR2## wherein X represents a halogen atom, m is an integer of 0 to 4, Y independently represents a hydrogen atom, an aliphatic or aromatic group containing 1 to 20 carbon atoms, or the group --R--SO.sub.3 M in which R represents an alkylene group containing 1 to 10 carbon atoms and M represents an alkali metal or an alkaline earth metal, at least one of the Y groups being the group --R--SO.sub.3 M, and Z represents an alkylene or alkylidene group containing 1 to 9 carbon atoms, a cycloalkylene or cycloalkylidene group containing 5 to 15 carbon atoms, O, S, SO, SO.sub.2, CO or CO.sub.2, and n is a number of 1 to 200.
Dependencies are inferred from the claim text.