Flame retardant polycarbonate composition

Claim 2

A flame retardant aromatic carbonate polymer composition comprising in admixture an aromatic carbonate polymer and a minor amount of a metal salt of a mixture of monomeric and polymeric substituted and unsubstituted sulfonic acids of aromatic carboxylic acids and esters, or a metal salt of a polymeric substituted and unsubstituted sulfonic acids of aromatic carboxylic acids and esters, wherein said metal salts thereof are selected from the group consisting of alkali metals and alkali earth metals, and mixtures of these salts and said substituent on the metal salt of the substituted sulfonic acids of aromatic carboxylic acids and esters is selected from the group consisting of an electron withdrawing radical and mixtures of electron withdrawing radicals.

Claim 3

The composition in claim 1 wherein the metal salt of the substituted and unsubstituted sulfonic acids of monomeric aromatic carboxylic esters have the following formula: X.sub.p R.sub.v (SO.sub.3 M).sub.m (COOY).sub.n R'q wherein X is an electron withdrawing radical, M is a metal selected from the group consisting of alkali metals and alkali earth metals, R is an aryl radical of 1-4 aromatic rings, R' is an organic radical selected from the group consisting of alkyl, alkenyl, alkylene alkenylene, alkylidene and alkenylidene radicals of 1-4 carbon atoms, Y is a metal selected from the group consisting of alkali metals and alkali earth metals, or an organic radical which is selected from the group consisting of alkyl, cycloalkyl, aralkyl, alkenyl, cycloalkenyl, aralkenyl and aryl radicals of 1-20 carbon atoms, m and n are integers of from 1-6, p and q are integers of from 0-10, and v is an integer of from 1-10.

Claim 4

The composition of claim 2 wherein the electron withdrawing radical is chlorine.

Claim 5

The composition of claim 2 wherein the metal salt is disodium 2,5-dichloro-4-sulfobenzoate.

Claim 6

The composition of claim 2 wherein the metal salt is sodium dimethyl 2,4,6-trichloro-5-sulfoisophthalate.

Claim 7

The composition of claim 2 wherein the metal salt is trisodium 2,4,6-trichloro-3,5-disulfobenzoate.

Claim 8

The composition of claim 1 wherein the metal salt of the unsubstituted and substituted sulfonic acids of polymeric aromatic carboxylic esters has the following formula: [Hal].sub.p [R(COO).sub.2-4 R'].sub.m [R"(COO).sub.2-4 R'''].sub.n [SO.sub.3 M].sub.x wherein Hal is a halogen selected from the group comprising fluorine, chlorine and bromine, R, R', R" and R''' are either aromatic nuclei of 1-4 aromatic rings or aliphatic and cycloaliphatic radicals of from 2-20 carbon atoms provided that at least one of the R's must be aromatic, M is a metal selected from the alkali or alkali earth metal group of the periodic table, m and m is an integer from 50-300, x is an integer from 1-600 and p is an integer from 0-600; wherein the SO 3 M group is attached to an aromatic ring.

Claim 9

The composition of claim 7 wherein the metal salt is polysodium polyethyleneterephthalate polysulfonate.

Claim 10

The composition of claim 7 wherein the metal salt is polysodium polybutyleneterephthalate polysulfonate.

Claim 11

The composition of claim 7 wherein the metal salt is polysodium polyethylene-2,5-dibromoterephthalate polysulfonate.