Laundering process for whitening synthetic textiles
AssigneeBASF SE
InventorsRobert Hochberg, Oliver Becherer, Bernard Schultz, Goetz Scheffler, René Schlatter
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Abstract
The present invention relates to the use of a combination of a free fluorescent whitening agent and cationic polymer as a brightening agent for a synthetic single or blended textile, especially polyester textile, and to a corresponding brightening agent as well as a laundering process for brightening a synthetic, single or blended textile, which is characterized by a) preparing a composition by contacting a free fluorescent whitening agent with a cationic polymer, and b) treating said synthetic, single or blended textile with the composition prepared in step a).
Claims11
A laundering process for brightening a polyester or polyester/cotton textile, which is characterized by
- a) preparing a composition by contacting a free fluorescent whitening agent with a cationic polymer and an anionic surfactant
- b) treating said textile with the composition prepared in step a),
- wherein the free fluorescent whitening agent is a compound selected from the group of formulae (4) to (27)
- and the cationic polymer is selected from the group consisting of
- a liquid dispersion cationic acryl polymer, a cationic homopolymer formed from 2-propen-1-aminium, N,N-dimethyl N-2-propenyl-, chloride and cellulose, 2-hydroxyethyl 2-hydroxy-3-(trimethylammonio)propyl ether, chloride and the fluorescent whitener ranges from 1 to 10 parts by weight per 100 parts of the cationic polymer.
Dependencies are inferred from the claim text.