New methods of textile ornamentation

• Main Authors: LANDELLS GEORGE, LEACH JAMES HARRY, BRAGG WILLIAM
• Format: Patent
• Language: English
• Published: 13.07.1960
• Subjects: DECORATING TEXTILES; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; LAUNDERING; TEXTILES; TREATMENT OF TEXTILES OR THE LIKE

Differential colour effects on textiles or films of aromatic polyesters are obtained by subjecting selected areas of the textile or film, preferably heat-set, to mechanical pressure action and then dyeing in the presence of, or in conjunction with the application of, a dyeing assistant, such as trichloroethylene, ethylene dichloride, chlorobenzene, chloroform, benzyl alcohol, ethyl benzoate, methyl salicylate, phenyl acetate, acetophenone, p-phenyl phenol, o-phenyl phenol or diphenyl, which causes aromatic polyesters to take up dyes more easily. The dyeing assistant is dissolved or emulsified in the dyebath, although when trichlorethylene is employed as the dyeing assistant, the dyed textile or film may be suspended in the vapours of this product. Two-colour effects may be obtained by effecting an additional dyeing operation prior to the application of mechanical pressure. In a modification, the textile or film is first dyed, then subjected to the mechanical pressure action and finally treated with the dyeing assistant. Dyeing may be effected on the winch, jigger or padder with disperse, basic, organic solvent-soluble, solubilised acetate or free leuco vat dyes or with azoic combinations. Mechanical pressure is preferably applied with a patterned calender, although a press, stamp, brush or the compressive-shrinkage apparatus of Specification 752,191 may also be used. Loose dye is preferably removed by soaping and rinsing or by treatment with hydrosulphite solution. Numerous examples are given. Specifications 759,595, 759,625, 812,697 and 828,947 also are referred to.