Patent ID: 6492444
Filing Date: 2002-12-10
Classification: C08K

Abstract:
A flame retardant composition comprising a flammable organic material selected from the group consisting of plastic resins, natural products and mixtures thereof having incorporated in or on a flame retardant amount of:A) an organic phosphorus-phosphorus oxyacid compound and composition produced by mixing and/or mixing and heating, and reacting the following components in stoichiometric proportions: a) phosphorus compound containing halides selected from the group consisting of phosphorus trichloride, phosphorus oxytrichloride, phosphorus pentachloride and mixtures thereof, in the amount of 25 to 100 parts by weight; b) inorganic phosphorus oxyacid, selected from the group consisting of phosphoric acid, polyphosphoric acid, pyrophosphoric acid, triphosphoric acid, phosphinic acid, metaphosphoric acid, hypophosphorus acid, phosphonous acid, and mixtures in the amount of 10 to 100 parts by weight; c) organic compounds that will react with a phosphorus compound containing halides or a phosphorus oxyacid, and are a saturated or unsaturated aliphatic, aromatic, cyclic, aliphatic-aromatic or aliphatic-cyclic compound selected from the group consisting of alcohol, polyalcohol, alkyl epoxides, polyepoxides, carboxylic acids and anhydrides, polycarboxylic acids and anhydrides, aldehydes, phenol, cresol, lignin, alkylalcoholamines, oils, fats, polyesters with hydroxyl or carboxylic radicals, carbohydrates, and mixtures thereof in the amount of 10 to 100 parts by weight of said organic compound thereby producing an organic phosphorus-phosphorus oxyacid compound; d) a metal containing compound having a carbonization accelerating effect, in the amount of 0 to 30 parts by weight; e) a carbonization auxiliaries, 0 to 100 parts by weight; f) a filler, in the amount of 0 to 200 parts by weight; â€ƒthereby producing an organic phosphorus-phosphorus oxyacid composition; the components a-f being 5 to 50% by weight, based on the weight of the flammable organic material.