The United States of America As Represented by the Secretary of

John V Beninate

Donald J Daigle

Darrell J Donaldson

Wilson A Reeves

George L Drake

Robert J Harper, Jr

George L Drake, Jr

Cellulosic fabric is dyed by affixing a hydroxymethyl phosphonium-nitrogen based polymer to the fabric and thereafter dyeing it with a cotton dye having anionic groups, in an acidic or neutral environment. In addition, a new method of affixing the polymer to the fabric is provided comprising contacting the fabric with a solution of urea and a precondensate of urea and tetrakis hydroxymethyl phosphonium salt.

Process for flameproofing cellulosic fibers prior to dyeing

Textile treating compositions containing the elements phosphorus, nitrogen, and bromine and the processes for imparting flame resistance to organic fibrous materials have been prepared. This is accomplished by impregnating the textile treating compositions consisting of (1) tris(hydroxymethyl)phosphine mixed with nitrogenous compounds containing at least two members of the group hydrogen and methylol radicals (--CH.sub.2 OH) attached to trivalent nitrogen atoms, or (2) soluble methylol phosphine adducts which contain one or more methylol phosphine radicals (P--CH.sub.2 OH) prepared by reacting tris(hydroxymethyl)phosphine with an amide or amine which contains one or more hydrogens attached to a trivalent nitrogen with an organic bromine containing material with at least 10% bromine in the form of bromine atoms attached to carbon atoms, in proportions selected so that generally the phosphorus contained in structures of the group (--CH.sub.2).sub.3 P amount to a small portion of the total weight of the mixture, and heating to cause insolubilization in or on the fibrous structure.

Phosphorus, nitrogen, bromine containing polymers and process for

Methylol phosphines, methylol phosphines in combination with amine or amido compounds or water soluble adducts of these methylol phosphines and amides or amines when mixed and reacted with mono, di or polyisocyanates wherein the isocyanate groups are attached to carbon atoms are particularly valuable for the preparation of thermosetting flame resistant polymers. The polymers which are produced are crosslinked phosphorus and nitrogen containing polymers in which the reoccurring structure units each contain a phosphorus atom, that is a component of a radical of the group tris(methylene)-phosphine (--CH.sub.2).sub.3 P and is linkd to at least one isocyanate radical by connecting urethane structure. The polymer forming solutions are also valuable for the preparation of flame-, glow-, wrinkle- and shrink-resistant textiles by impregnating fabrics with these solutions and causing reaction and polymer formation by application of heat.

Fire resistant organic products and method for production

Textile treating compositions containing the elements phosphorus, nitrogen, and bromine and the processes for imparting flame resistance to organic fibrous materials have been prepared. This is accomplished by impregnating the textile treating compositions consisting of (1) tris(hydroxymethyl)phosphine mixed with nitrogenous compounds containing at least two members of the group hydrogen and methylol radicals (--CH.sub.2 OH) attached to trivalent nitrogen atoms, or (2) soluble methylol phosphine adducts which contain one or more methylol phosphine radicals (P--CH.sub.2 OH) prepared by reacting tris(hydroxymethyl)phosphine with an amide or amine which contains one or more hydrogens attached to a trivalent nitrogen with an organic bromine containing material with at least 10% bromine in the form of bromine atoms attached to carbon atoms, in proportions selected so that generally the phosphorus contained in structures of the group (--CH.sub.2).sub.3 P amounts to a small portion of the total weight of the mixture, and heating to cause insolubilization in or on the fibrous structure.

Growing community of inventors

Gretna, LA, United States of America

John V Beninate