Process of treating cellulosic textile materials

Abstract

Abstract 501,288. Treating textiles. EVANS, J. G., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Aug. 23, 1937, No. 23119. [Class 15 (ii)] Cellulosic textile material is rendered soft, crease-resistant and water-repellent by impregnating with a solution or suspension of one or more of the quaternary ammonium salts described in Specifications 466,817, 477,991, 495,025, 497,856, and 498,287, before, after or simultaneously with a treatment with resin components or resin precondensate, followed by drying and heating to decompose the quaternary salt and insolubilize the resin. The quaternary salt and the resin or resin components may be applied separately, and the material dried and baked after each impregnation. In examples: (1) to a ureaaldehyde precondensate is added an aqueous emulsion of stearimidomethylpyridinium chloride containing ammonium dihydrogen phosphate ; spun viscose is impregnated in the solution, squeezed, dried and heated to 140‹ C. for 3 mins.; superfluous resin is removed by soap. (2 and 3) A mercerized cotton fabric is treated as in example 1 except that the quaternary salt used is stearamidomethylpyridinium chloride, or stearylureidomethylpyridinium chloride. (4) A viscose fabric is impregnated with a solution of stearamidomethylpyridinium nitrate and sodium acetate, dried, impregnated with a urea-aldehyde precondensate, squeezed, dried, heated to 150‹ C. for 1¢ mins., washed and dried. (5) A viscose crape fabric is impregnated with a ureaformaldehyde precondensate, dried, heated to 140‹ C. for 3 mins., padded with a solution containing N-carbomethoxyheptadecylaminomethylpyridinium chloride and hexamethylene tetramine, dried and heated for 5 mins. at 40‹ C., washed and dried. Specifications 291,474, 304,900, [both in Class 2 (iii)], 431,703, and 449,243 also are referred to.

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