| 摘要 |
<p>Exhaust dyeing process providing a high degree of exhaust and fixation and wherein disperse dyes are applied to and fixed in disperse dyeable synthetic polymers in the form of films, fibres or fabrics, comprises: (a) dissolving an organic disperse dye in a suitable organic solvent to form a dye solution, the organic solvent having a boiling point, either itself or as an azeotrope with the liquid fluorocarbon defined in (b), less than the boiling point of said liquid fluorocarbon; (b) forming a solution or emulsion of the dye solution in a saturated liquid fluorocarbon having a fluorine to carbon atom ratio of at least one, a solubility parameter of less than 7.0 and a critical temp. of at least 135 degrees C; (c) contacting the disperse dyeable synthetic polymer with the solution of emulsion; and (d) heating to evaporate the organic solvent and continuing heating at a temp. greater than the glass transition temp. of the synthetic polymer to effect exhaustion of the dye from the solution of emulsion.</p> |
