Abstract:
Process for the continuous optical brightening of synthetic polyamide fibre material from organic solvents, whereinA. the fibre material is dry cleaned,B. at least one ionic optical brightener is applied to the material from a solution, emulsion or dispersion in a non-polar organic solvent,C. the material is intermediately dried,D. the optical brightener is developed in a hot aqueous acid bath, andE. the fibre material is subsequently thermofixed.
Abstract:
A description is given of novel stabilizer mixtures comprising at least one compound of the formula ##STR1## and at least one compound of the formula ##STR2## in which the variables are as defined in the claims. The novel stabilizer mixtures are suitable for stabilizing organic material, especially textile fibre materials, against damage by light, oxygen and heat.
Abstract:
A process is described for the photochemical and thermal stabilisation of undyed and dyed polyester fibre materials, which comprises treating said materials with a compound of formula ##STR1## wherein R.sub.1 and R.sub.2 are each independently of the other C.sub.1 -C.sub.12 alkyl. Dyeings and prints of superior lightfastness and sublimation fastness on polyester and cellulose acetate are obtained by this process.
Abstract:
A process for enhancing the thermal and/or photochemical stability of dyeings on dimensionally stabilised polyamide fibres, which comprises treating the polyamide fibre material, before the fixation step for producing defined, resilient forms and dimensions, in aqueous medium with a compound of formula I(A-Y-).sub.n Z(-W).sub.m (1)wherein A, W, Y, Z, n and m are as defined in claim 1.
Abstract:
There is disclosed a process for the photochemical stabilization of undyed and dyeable artificial leather, which comprises treating said artificial leather in an aqueous liquor which contains a light stabilizer. A composition for carrying out the process is also described.
Abstract:
A process is described for the photochemical stabilization of undyed and dyed polyamide fibre material, and blends thereof with other fibres, using photochemically stabilizing compositions based on copper compounds of phenols, which process comprises treating the polyamide fibre material with fibre-reactive organic copper complexes of the reaction products of o-hydroxybenzoyl derivatives of the formula ##STR1## wherein R is hydrogen or C.sub.1 -C.sub.4 alkyl and the OH substituent is located in the 3-, 4- or 5-position, with aliphatic diamines or hydroxylamine. The copper complex compounds are distinguished by a high rate of exhaustion on to the polyamide fibre material, a feature which is significant in economic terms because of the low consumption of product.
Abstract:
A process for preventing yellowing of polyamide fibre materials treated with stain-blocking agents which comprises treating the polyamide fibre material with a water-soluble light stabilizer with affinity for the fibre before, during or after the treatment with a stain-blocking agent, and the fibre material thus treated are described.
Abstract:
A process for the photochemical stabilization of polyamide fiber material or mixtures thereof with other fiber materials which comprises treating the fiber material with a mixture of (A) a water-soluble copper complex dye or a mixture of copper complex compounds, at least one component being a water-soluble copper complex dye, (B) a light stabilizer and if desired (C) an antioxidant, an agent for carrying out the process and the fiber material treated therewith are described.
Abstract:
A process is described for improving the photochemical stability of dyeings on polyester fibre materials by means of UV absorbers of the formula ##STR1## in which R is lower alkyl, lower alkoxy, halogen or hydroxyl, R.sub.1 and R.sub.2 independently of one another alkyl which is substituted by hydroxyl, lower alkoxy, lower alkylthio, amino, monoalkylamino or dialkylamino, phenyl, phenyl which is substituted by chlorine, lower alkyl or lower alkoxy, or o-hydroxyphenyl, and n is 0, 1 or 2.
Abstract:
The invention relates to novel zinc and aluminium phthalocyanine compounds of the formula ##STR1## wherein MePc is the zinc or aluminium phthalocyanine ring system, M is hydrogen or a salt-forming cation, P.sub.1 is hydrogen or a group of the formula --NH--CN or NH--SO.sub.2 R.sub.3 or the salts thereof, wherein R.sub.3 is alkyl, aryl or a heterocyclic ring system, R.sub.2 is a neutral, non-solubilizing substituent, n is 1 to 4 and each of m and q is 0 to 3 and p is 0 to 4. These compounds are prepared by starting from the corresponding sulfohalides. The novel compounds are used as photoactivators, especially for bleaching and removing stains from textiles and for combating microorganisms in or on organic or inorganic substrates. The invention also relates to bleaching, detergent and soaking and microbicidal compositions which contain the novel phthalocyanine compounds.