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 mixture of a metal salt of a monomeric substituted aromatic sulfonic acid and a polymeric substituted aromatic sulfonic acid or a polymeric substituted aromatic sulfonic acid, and wherein said metal salts thereof are selected from the group consisting of the alkali metal salts and the alkaline earth metal salts, and mixtures thereof, and said substituent on the metal salts of the substituted aromatic sulfonic acid is selected from the group consisting of an electron withdrawing radical and mixtures thereof.

Claim 3

The composition of claim 1 wherein the composition comprises 0.01 to about 10 weight percent of the additive based on the weight of the aromatic carbonate polymer composition.

Claim 4

The composition of claim 1 wherein the metal salt of the substituted polymeric aromatic sulfonic acid has the following formula: A.sub.m R.sub.1m+n B.sub.n wherein R 1 is selected from the group of organic radicals consisting of halogen substituted and unsubstituted arylene, alkylene, aralkylene, alkenylene, aralkenylene, alkylidene, aralkylidene, alkenylidene and aralkenylidene radicals of 1-20 carbon atoms and wherein A and B are independently selected from the following formula: R'.sub.x (SO.sub.3 M).sub.y R" wherein M is a metal selected from the group consisting of alkali metal and alkaline earth metal, R' is an electron withdrawing radical, R" is an aryl radical of 1-4 aromatic rings, x is an integer of 0-17, y is an integer of 0-10, provided that the sum of x must equal at least 1 and the sum of y must equal at least 1; and further wherein m is an integer of from 0-2000 and n is an integer from 0-2000 provided, however, that the sum of m and n must equal at least 4.

Claim 5

The composition of claim 1 wherein the metal salt of the substituted monomeric aromatic sulfonic acid has the following formula: A.sub.0-1 R .sub.0-1 B wherein R is selected from the group of organic radicals consisting of halogen substituted and unsubstituted alkyl, aralkyl, alkaryl, aralkenyl, aryl, arylene, alkylidene, aralkylidene, alkenylidene and aralkenylidene radicals of 1-20 carbon atoms, and wherein A and B are independently selected fron the following formula: R'.sub.x (SO.sub.3 M).sub.y R" wherein M is a metal selected from the group consisting of alkali metal and alkaline earth metal, R' is an electron withdrawing radical, R" is an aryl radical of 1 to 4 aromatic rings, x is an integer of 0-17, y is an integer of 0-10, provided that the sum of x must equal at least 1 and the sum of y must equal at least 1.

Claim 6

The composition of claim 1 wherein the electron withdrawing radical is selected from the group consisting of halogen, nitro, trihalomethyl and cyano and mixtures thereof.

Claim 7

The composition of claim 1 wherein the electron withdrawing radical is a chlorine.

Claim 8

The composition of claim 1 wherein the electron withdrawing radical is trifluoromethyl.

Claim 9

The composition of claim 1 wherein the metal salt of the substituted monomeric aromatic sulfonic acid is the sodium salt of the sulfonic acid derived from ortho dichlorobenzene.

Claim 10

The composition of claim 1 wherein the metal salt of the substituted monomeric aromatic sulfonic acid is the sodium salt of pentachlorobenzenesulfonic acid.

Claim 11

The composition of claim 1 wherein the metal salt of the substituted monomeric aromatic sulfonic acid is the disodium salt of 2,5-dichlorobenzene-1,3-disulfonic acid.

Claim 12

The composition of claim 1 wherein the metal salt of the substituted polymeric aromatic sulfonic acid is the sodium salt of sulfonated poly-(chlorostyrene).