| 摘要 |
<p>A method for improving the light fastness of dyed nylon fibres, which method comprises exhausting copper phosphate, preferably in colloidal form, onto the fibres to deposit thereon at least 3 parts per million, and preferably not more than 7500 parts per million copper phosphate based on the weights of fibre. The copper phosphate may be exhausted from organic solvent systems, aqueous dispersion of copper phosphate or aqueous copper phosphate dyebaths under pressure and at an elevated temperature below the boiling point of the bath or system at the prevailing pressure. Deposition of the copper phosphate may be effected either before, during or after the application of dye to the fibres. </p> |
