Aqueous compositions of UV-active agents, their production and use
AssigneeClariant Finance (BVI) Limited
InventorsRainer Daus, Roland Grimm, Jürg Heller, Jean-Luc Mura
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Abstract
Aqueous dispersions (U) containing: (A) a UV-light-absorbing textile treatment agent, (B) a dispersant system and (C) a carboxyl-containing crosslinked copolymer, and optionally (D) at least one formulation additive, are useful for the corresponding UV-active finishing of textile material, in particular textile material which can be dyed with disperse dyes or optically brightened with disperse brighteners, especially for treating cheeses with liquors comprising disperse dyes and UV absorbers or liquors comprising disperse brighteners, without fear of troublesome pressure build-up or dye or brightener deposits.
Claims11
A process for finishing a textile material by treating said textile material with an aqueous dispersion (U) comprising the steps of:
- 1) providing an aqueous dispersion (U) comprising:
- (A) a UV-absorbing textile treatment agent, where (A) is
- (A1) a UV absorber, or
- (A2) an optical brightener,
- (B) a dispersant system, where B comprises
- (B1) a surfactant selected from the group consisting of:
- anionic dispersants, nonionic dispersants, emulsifiers and combinations thereof, and/or
- (B2) at least one dispersing auxiliary comprising:
- protective colloids, wetting agents, solubilizers and/or dispersion stabilizers, and
- (C) a carboxyl-containing crosslinked copolymer, where (C) is a copolymer of:
- (C1) maleic acid or maleic anhydride,
- (C2) at least one monoethylenically unsaturated nonionic comonomer, and
- (C3) a crosslinking comonomer
- 2) providing a textile material, and
- 3) contacting said aqueous dispersion (U) with said textile material.
Dependencies are inferred from the claim text.