Flame retardant polyester article, method for the production of the same and compositions for retarding the flammability of polyester article

A method for the flame retarding treatment of polyester consisting essentially of treating a polyester article with a composition including a halogenated phosphoric ester and 5 percent to 20 percent by weight of said halogenated phosphoric ester of a nonionic surfactant emulsifier derived by esterification of a polyethylene glycol ether of a higher alcohol, a polypropylene glycol ether of a higher alcohol, or an alkyl phenol with a phosphoric esterifying agent, said halogenated phosphoric ester and surfactant emulsifier being admixed with an amount of water sufficient to form a stable aqueous emulsion.

A flame retardant polyester article obtained by treating a polyester article with a flame retardant composition consisting essentially of an aqueous emulsion of a halogenated phosphoric ester present in said emulsion in an amount by weight thereof at 7 percent to 20 percent by weight;

• and 5 percent to 20 percent by weight of said halogenated phosphoric ester of a nonionic surfactant emulsifier derived from the esterification of a polyethylene glycol ether of a higher alcohol, a polypropylene glycol ether of a higher alcohol or an alkyl phenol with a phosphoric esterifying agent.

A method of making a flame retardant aqueous emulsion for treating a polyester article consisting essentially of admixing water, 7 percent to 20 percent by weight of the total emulsion of a halogenated phosphoric ester;

• and 5 percent to 20 percent by weight of said halogenated phosphoric ester of a nonionic surfactant emulsifier obtained by esterification of a polyethylene glycol ether of a higher alcohol, a polypropylene glycol ether of a higher alcohol or an alkyl phenol with a phosphoric esterifying agent.