Process for rendering non-thermoplastic fibrous materials flame resistant to molten materials by application thereto of a flame resistant composition, and related articles and compositions

A flame retardant fiber, fabric or fibrous composition use in protective covering exposed to molten non-ferrous metals that comprise a cellulose or polypeptide fiber, fabric or fibrous composition coated with a composition comprising a water-insoluble non-phosphorous containing, brominated, aromatic or cycloaliphatic organic compound, a metal oxide or a mixture of said oxide and a metal hydrate, a protective colloid as a thickening agent for said composition and a water-insoluble, polymeric adhesive binder or latex.

A flame retardant fiber, composition or fabric intended for use in garments worn by workers in non-ferrous foundries wherein said fiber, composition or fabric is treated with a composition comprising a solid, water-insoluble non-phosphorus containing brominated aromatic or cycloaliphatic organic compound and a metallic oxide in admixture with an aqueous emulsion of a suitable water-insoluble high molecular weight polymeric adhesive binder, said brominated compound and metallic oxide being solids at room temperature, substantially totally insoluble in water, and being present in a weight ratio of 1:4 parts to 1.0:2 part of metallic oxide, said high molecular polymeric binder being present in amount sufficient to secure said brominated organic compound and metallic oxide to said fiber, composition or fabric after drying and curing thereof and wherein the total amount of flame retardant deposited on said fiber, composition or fabric is effective in reducing the flammability of the same without promoting the adhesion of molten non-ferrous metals to the fabric.