Patent ID: 6054515
Filing Date: 2000-04-25
Classification: C08K,C09K

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 a flame retardant amount of:A) a nitrogen containing salt of organic polyphosphorus oxyacid produced by the process comprising of mixing, heating and reacting in stoichiometric proportions the following components;a) an organic cyclic phosphonate ester; in the amount of 100 to 200 parts by weightb) an inorganic phosphorus oxyacid in the amount of 100 parts by weight and selected from the group consisting of phosphoric acid, polyphosphoric acid, pyrophosphoric acid and mixtures thereof thereby producing an organic polyphosphorus oxyacid then adding, mixing and reactingc) a nitrogen containing basic salt forming compound selected from the group consisting of ammonia, amino compounds, amines, polyamines and mixtures thereof; in the amount of 30 to 200 parts by weightB) a comb-like polymer consisting of a polyethylene main chain and a polyoxyalkylene side chain; in the amount of 0 to 30 parts by weightC) a metal-containing compound having a carbonization accelerating effect; in the amount of 0 to 30 parts by weightD) a carbonization auxiliaries; in the amount of 0 to 100 parts by weightE) a filler, in the amount of 0 to 400 parts by weightthe components A-E being 5 to 50% by weight, based on the weight of the flammable organic material.