Patent ID: 6093760
Filing Date: 2000-07-25
Classification: C08J,C08K,C09K

Abstract:
A low volatility flame retardant for a styrene resin comprising an aromatic phosphate represented by formula (I): ##STR10## wherein a, b, and c each independently represent an integer of from 1 to 3; and R.sub.1, R.sub.2, and R.sub.3 each independently represent a hydrogen atom or a halogen-free alkyl group having from 1 to 30 carbon atoms, which is not an isopropyl group,the total number of carbon atoms in the substituents represented by R.sub.1, R.sub.2 and R.sub.3 being from 12 to 25 on an average in one molecule of said aromatic phosphate,provided that when said flame retardant comprises a plurality of aromatic phosphates having different substituents, the total number of carbon atoms in the substituents R.sub.1, R.sub.2 and R.sub.3 of said flame retardant is represented by a number average in the whole of said flame retardant, which is the sum of the products of the weight fraction of respective aromatic phosphate and the total number of carbon atoms in the substituents in respective aromatic phosphate,and wherein the flame retardant further comprises at least one metal selected from the group consisting of aluminum, magnesium, sodium and antimony, and the total content of the metal in said flame retardant is from about 1.4 to 1,000 ppm by weight.