Patent ID: 9487707
Filing Date: 2016-11-08
CPC Classification: C07D,C08K,C09K

Claim Text:
1. A flame retardant composition for flammable plastic materials consisting essentially of particulate 2,4,6-tris(2,4,6-tribromophenoxy)-1,3,5-triazine containing 1 to 1000 ppm of a metal species of a water-insoluble polyvalent metal compound having a solubility in water of less than 1 g/L at 25° C., wherein said water-insoluble polyvalent metal compound is selected from the group consisting of titanium dioxide, zirconium dioxide, aluminum oxide, hydroxides, carbonates, phosphates, sulfates and silicates, said water-insoluble polyvalent metal compound being present in said particulate 2,4,6-tris(2,4,6-tribromophenoxy)-1,3,5-triazine in a physically indiscrete form, wherein said particulate 2,4,6-tris(2,4,6-tribromophenoxy)-1,3,5-triazine is formed by reacting an alkali metal tribromophenolate and cyanuric chloride in the presence of 0.01 to 10% by weight of finely divided particles of said water-insoluble polyvalent metal compound, based on the weight of cyanuric chloride, and wherein the content of halide ion sources calculated as NaCl of the composition is less than 500 ppm when determined by the potentiometric titration with AgNO 3 .