| 摘要 |
The fastness of dyeings and prints on fibrous materials is improved by an after-treatment with a monomeric aminoalkylalkoxy silane, an aminoalkylpolysiloxane, a copolymer or blend of an aminoalkylpolysiloxane with one or more other siloxanes, or a metal coordination complex, e.g., a copper, chromium or cobalt complex, of the silane or polysiloxane. The silane or polysiloxane may be applied from aqueous solution, dispersion or emulsion, in the presence of distributors, such as alcohols, organic and inorganic acids, aromatic hydrocarbons and alkalies, examples of which are given. The treated materials are preferably finally heated. Lists of silanes and polysiloxanes are given. The process is applicable to dyed or printed fibres of cotton, linen, ramie, hemp, jute, regenerated cellulose, cellulose esters p and ethers, wool and silk and also to dyed wood pulp, paper, leather, furs and feathers. Numerous examples describe the after-treatment of textiles of cotton or regenerated cellulose which have been dyed with substantive dyestuffs. The after-treatment may be applied to fibrous materials which have been dyed by the process of Specification 882,067. Specifications 795,894 and 882,062 also are referred to. |
