| 摘要 |
<p>This invention provides a combined dyeing and polymer deposition process for protein fibres. The fibres are treated in a liquid containing a dye, a polymerisable olefinic monomer and a catalyst in the form of a complex of copper, iron, chromium, manganese, vanadium, cobalt, nickel and aluminium together with a trihaloacetic acid or a salt or ester thereof. Other substances which can form trihalomethyl ions or free radicals in the presence of the complex can also be used. The combined catalyst of metal complex and trihaloacetic acid enables polymerisation of the monomer to be carried out in the presence of air and also permits formation of the polymer within the fibre substance rather than at the surface or in the liquid. The dye may be an acid, premetallised or reactive dye and is usually applied simultaneously with the polymer, for example by heating the fibres in an aqueous solution containing the reacting materials gradually from room temperature up to a temperature in the range 50 DEG to 100 DEG C and maintaining them at that temperature for between 30 minutes and 2 hours. The invention enables wool to be coloured and to have its physical and mechanical properties altered by polymer deposition in a single operation in a single bath, as well as ensuring that as much as possible of the polymer forms within the substance of the fibres.</p> |
