Polyurethanes as textile assistants

Claim 2

A methylolated polyurethane of claim 1 wherein from 25 percent to 100 percent of all amine group hydrogens of said low molecular weight polyurethane have been replaced with methylol groups and wherein said aliphatic polyamine is selected from the group consisting of alkylamines, alkyleneamines, polyoxaalkanediamines, polyoxapolyazalkanamines, and polyoxapolyazalkanediamines, said aliphatic polyamine containing from two through four amine groups and wherein any oxyalkylene chain contains from one to five oxyalkylene groups and the maximum total oxyalkylene content is from two to about 20 units.

Claim 3

A methylolated polyurethane of claim 1 which is the reaction product of formaldehyde with a low molecular weight polyurethane having a reduced viscosity in water at 25* C. of from about 0.01 to about 0.06 and which is the reaction product of a Polyol carbonate selected from the group consisting of sorbitol dicarbonate, sorbitol tricarbonate, erythritol dicarbonate, sorbitan dicarbonate, xylitol dicarbonate, melibiitol dicarbonate, melibiitol tricarbonate, melibiitol tetracarbonate, raffinitol dicarbonate, raffinitol tricarbonate, raffinitol tetracarbonate, raffinitol pentacarbonate, and mixtures thereof, and an aliphatic polyamine is selected from the group consisting of hexamethylenediamine, dipropyleneglycoldiamine, triethyleneglycoldiamine, tetrabutyleneglycoldiamine, pentamethylenediamine, dipropylenetriamine, tetraethyltriamine, triethylenetetramine, putrescine, 1,2 butane diamine, 4 chloro hexamethylenediamine, 4 hydroxy-1,8 diamino-octane, 1,2-butene diamine, 5 phenyl-1,2-diamino-pentane, bromophenyltriethyleneglycoldiamine, and NH2(C3H6-O)3-C3H6-N-C3H6-0-C3H6NH2.

Claim 4

A process which comprises applying to textiles a textile assistant selected from the group consisting of a methylolated polyurethane of claim 1 and a methylolated polyol urethane with at least an average number of urethane groups equal to 2, said methylolated polyol urethanes being the reaction product of formaldehyde with the reaction product of ammonium hydroxide with a polyol carbonate of a polyol containing at least four hydroxyl groups and at least four carbon atoms and selected from the group consisting of hexitols, hexanetetrols, hexanepentols pentitols, pentanetetrols, tetritols, hexitans, and nonreducing polyhydric alcohols of di- and tri-saccharides, said polyol carbonate having an average carbonate content of about two through about five carbonate groups per molecule and subjecting the textile fabric to a temperature sufficient to cure the methylolated polyurethane.

Claim 5

A process for enhancing the properties of textile fabric which comprises applying to the textile fabric a methylolated polyurethane of claim 1 and subjecting the textile fabric to a temperature sufficient to cure the methylolated polyurethane.

Claim 6

A process for improving the properties of textile fabric which comprises applying to the textile fabric a methylolated polyurethane of claim 4 and subjecting the textile fabric to a temperature sufficient to cure the methylolated polyurethane.

Claim 7

As an article of manufacture, textile materials which have been treated in accordance with a process of claim 5.

Claim 8

As an article of manufacture, textile fabrics which have been treated in accordance with a process of claim 7.

Claim 9

A process according to claim 5 which comprises applying to a textile material an aqueous solution of the methylolated polyol urethane, drying the textile material, and curing said textile material.

Claim 10

As an article of manufacture, a textile material which has been treated in accordance with the process of claim 10.