Process for the photochemical stabilization of wool with triazinyl ultra-violet absorbing compound
AssigneeCiba-Geigy Corporation
InventorManfred Rembold
Life of this patent
Estimating the term…
Abstract
A process for the photochemical stabilization of wool is described, which comprises treating the wool with an aqueous solution comprising at least one UV absorber of the formula ##STR1## in which at least one of the substituents R.sub.1, R.sub.2 and R.sub.3 is a radical of the formula ##STR2## in which M is hydrogen; or an equivalent of a cation; m is 1 or 2, and the remaining substituent(s), independently of one another, are C.sub.1 -C.sub.12 alkyl; C.sub.1 -C.sub.12 alkoxy; C.sub.1 -C.sub.12 -alkylthio; C.sub.1 -C.sub.12 alkylamino; di-C.sub.1 -C.sub.12 -alkylamino; phenyl; phenoxy; phenylthio, anilino; or N-phenyl-N-C.sub.1 -C.sub.4 alkylamino; The UV absorbers can be used in a wide pH range and effectively reduce yellowing of the wool.
Claims10
A process for the photochemical stabilisation of wool or wool containing fibres, which comprises treating the wool or the wool containing fibre material with an aqueous solution comprising at least one UV absorber of the formula ##STR12## in which at least one of the substituents R.sub.1, R.sub.2 and R.sub.3 is a radical of the formula ##STR13## in which M is hydrogen;
- sodium;
- potassium;
- calcium;
- magnesium;
- ammonium;
- mono-, di-, tri-or tetraalkylammonium;
- mono-, di- or trihydroxyalkylammonium;
- or ammonium that is independently substituted two or three times by hydroxyalkyl and alkyl;
- m is 1 or 2, and
- the remaining substituent(s), independently of one another, are unsubstituted or substituted C.sub.1 -C.sub.12 alkyl, C.sub.1 -C.sub.12 alkylthio, mono-C.sub.1 -C.sub.12 alkylamino or di-C.sub.1 -C.sub.12 alkamino;
- unsubstituted or substituted phenyl, phenoxy, phenylthio, anilino or N-phenyl-N-C.sub.1 -C.sub.4 -alkylamino.
A composition for the photochemical stabilisation of wool or wool containing fibre material, comprising at least one UV absorber of the formula ##STR15## in which at least one of the substituents R.sub.1, R.sub.2 and R.sub.3 is a radical of the formula ##STR16## in which M is hydrogen;
- sodium;
- potassium;
- calcium;
- magnesium;
- ammonium;
- mono-, di-tri tetraalkylammonium;
- mono-, di- or trihydroxyalkylammonium;
- or ammonium that is independently substituted two or three times by hydroxyalkyl and alkyl;
- m is 1 or 2, and
- the remaining substituent(s), independently of one another, are unsubstituted or substituted C.sub.1 -C.sub.12 alkyl, C.sub.1 -C.sub.12 alkoxy, C.sub.1 -C.sub.12 alkythio, mono-C.sub.1 -C.sub.12 alkylamino or di-C.sub.1 -C.sub.12 alkamino;
- unsubstituted or substituted phenyl, phenoxy, phenylthio, anilino or N-phenyl-N-C.sub.1 -C.sub.4 -alkylamino and a wetting agent.
Dependencies are inferred from the claim text.