Patent ID: 6488718
Filing Date: 2002-12-03
Classification: D06M

Abstract:
A method for preparing cellulosic fibers with reduced flammability comprising:a) preparing a composition comprising amino acids, proteins, peptides, or mixtures thereof and a suitable crosslinking agent selected from the group consisting of dimethyloldihydroxyethylene urea, imidazoles, and imidazolidinones; b) applying an effective, fire retarding amount of the composition to a substrate to be treated which comprises a cellulosic fiber or a blend of a cellulosic fiber with another fiber; and c) linking one or more hydroxy, thiol, amine, or carboxylic acid groups on the amino acids, proteins, or peptides with a sufficient quantity of the hydroxy groups on the fiber to be treated such that the resulting treated fiber has an acceptable degree of fire resistance for the intended use; wherein at least a portion of the amino acids, proteins, or peptides are linked to the hydroxy groups on the substrate via the crosslinking agent.