FIRE RETARDANT COMPOSITION

摘要

A coating composition suitable for application to a substrate for curing thereon to form a fire-retardant coating, the composition being formed of a mixture of an aqueous emulsion of ethylene-vinyl chloride copolymer, the ratio of the dry weight of the copolymer to one hundred parts of the composition being in the range between about 15 to 17 parts; a powder of either zinc borate or a mixture of aluminum trihydrate and zinc borate in a weight ratio of from about 4.5 to 35 parts per hundred of the composition, the weight ratio of zinc borate to aluminum trihydrate being not less than 1:6; added water in an amount between 30 and 45 parts per hundred of the composition; a thickening agent present in amount sufficient to maintain the powder in suspension; and a dispersing agent present in sufficient amount to impart fluidity to the composition and to enhance dispersion of the powder in the composition.