Patent GB-694076-A (GB)
Title: Improvements in the production of pigmented prints on fabrics
IPC: D06P1/44
Filed: 1951-10-03
Abstract: Fabrics are printed or padded with a pigmented solution or dispersion of a high molecular substance containing hydroxyl, carboxylic or carboxylic amide groups, and then heated to a temperature preferably above 100 DEG  C. and prior to, simultaneously with, or subsequently to the printing or padding, the fabric is treated with a substance which when heated is capable of reacting as a polyisocyanate.  High molecular substances specified are cellulose derivatives, polyamides, polyurethanes, polyesters, polyvinyl alcohol, polyacrylic acid, polyacrylic amides, polyvinyl-pyrrolidone and interpolymers of these with vinyl compounds which do not contain free hydroxyl, carboxylic or carboxylic amide groups.  Suitable substances reacting as polyisocyanates are the adducts of 1,6-hexamethylene diisocyanate or 2,4-toluylene diisocyanate with sodium bisulphite, aceto-acetic ester, e -caprolactam or diethyl malonate.  In examples: (1) cotton is printed with a thickened paste including copper phthalocyanine, the adduct of sodium bisulphite and 1,6-hexamethylene diisocyanate, and an interpolymer of ethyl acrylate and acrylic acid, and heated to 140 DEG  C.; (2) stable fibre fabric is printed with a paste including copper phthalocyanine, the adduct of 1,6-hexamethylene diisocyanate and e -caprolactam, and the interpolymer of ethyl acrylate, acrylonitrile and acrylic acid, and heated to 140 DEG  C.; (3) glass fabric is impregnated with a solution of the adduct of 1,6-hexamethylene diisocyanate and sodium bisulphite, dried, printed with a thickened paste including the azo dyestuff 1-amino-2 - methoxybenzene - 3 - sulphondiethylamide -->2 - hydroxynaphthalene - 3 - carboxylic acid - (21,41 - dimethoxy - 51 - chlorophenyl)-amide and an interpolymer of butyl acrylate, vinyl chloride and allyl carbinol, and heated to 160 DEG  C.; (4) cotton is padded with a liquor containing the calcium lake of the azo dyestuff 1 - methyl - 4 - aminobenzene - 5 - sulphonic acid-->2 - hydroxynaphthalene - 3-carboxylic acid, an interpolymer of ethyl acrylate and acrylic acid and an interpolymer of butyl acrylate, acrylonitrile and acrylic acid, dried treated with the bisulphite adduct of 1,6-hexamethylene diisocyanate, dried and heated to 140 DEG  C., and (5) polyamide fabric is printed with a thickened paste including the adduct of 1,6-hexamethylene diisocyanate and diethyl malonate, iron oxide brown and the polyamide obtained from hexamethylenediamine adipate, hexamethylenediamine g -ketopimelate, hexamethylenidiamine succinate and e -caprolactam, and heated to 130 DEG  C.ALSO:Fabrics are printed or padded with a pigmented solution or dispersion of a high molecular substance containing hydroxyl, carboxylic or carboxylic amide groups, and then heated to a temperature preferably above 100 DEG  C. and prior to, simultaneously with, or subsequently to the printing or padding, the fabric is treated with a substance which when heated is capable of reacting as a polyisocyanate.  High molecular substances specified are cellulose derivatives, polyamides, polyurethanes, polyesters, polyvinyl alcohol, polyacrylic acid, polyacrylic amides, polyvinyl pyrrolidone and interpolymers of these with vinyl compounds which do not contain free hydroxyl, carboxylic or carboxylic amide groups.  Suitable substances reacting as polyisocyanates are the adducts of 1,6-hexamethylene diisocyanate or 2,4-toluylene diisocyanate with sodium bisulphite, acetoacetic ester, e -caprolactam or diethyl malonate.  In examples: (1) cotton is printed with a thickened paste including copper phthalocyanine, the adduct of sodium bisulphite and 1,6-hexamethylene diisocyanate, and an interpolymer of ethyl acrylate and acrylic acid, and heated to 140 DEG  C.; (2) stable fibre fabric is printed with a paste including copper phthalocyanine, the adduct of 1,6-hexamethylene diisocyanate and e -caprolactam, and the interpolymer of ethyl acrylate, acrylonitrile and acrylic acid, and heated to 140 DEG  C.; (3) glass fabric is impregnated with a solution of the adduct of 1,6-hexamethylene diisocyanate and sodium bisulphite, dried, printed with a thickened paste including the azo dyestuff 1-amino - 2 - methoxybenzene - 3 - sulphondiethylamide-->2 - hydroxynaphthalene - 3-carboxylic acid - (21,41-dimethoxy - 51 - chloro phenyl)-amide and an interpolymer of butyl acrylate, vinyl chloride and allyl carbinol, and heated to 160 DEG  C.; (4) cotton is padded with a liquor containing the calcium lake of the azo dyestuff 1 - methyl - 4 - aminobenzene - 5-sulphonic acid-->2 - hydroxynaphthalene - 3-carboxylic acid, an interpolymer of ethyl acrylate and acrylic acid and an interpolymer of butyl acrylate, acrylonitrile and acrylic acid, dried, treated with the bisulphite adduct of 1,6-hexamethylene diisocyanate, dried and heated to 140 DEG  C.; and (5) polyamide fabric is printed with a thickened paste including the adduct of 1,6-hexamethylene diisocyanate and diethyl malonate, iron oxide brown and the polyamide obtained from hexamethylenediamine adipate, hexamethylenediamine - g -ketopimelate, hexamethylenediamine succinate and e -caprolactam, and heated to 130 DEG  C.