Dye transfer inhibitor
A dye transfer inhibitor (Engl. Dye transfer inhibitor ) is an additive in colored detergents which the washing process the transfer of washed- dyes prevents other textiles.
Substance classes
Dye transfer inhibitors are mostly polymers and can be found in different classes of substances. Polymers used early were polyvinylpyrrolidones (PVP) or polyimidazoles . Further developments are copolymers of vinylpyrrolidone and vinylimidazole (protected trade name Sokalan ) and vinylpyrrolidone and poly-4-vinylpyridine- N -oxide (protected trade name Chromabond ).
Mode of action
During the washing process, dye transfer inhibitors form anionic complexes with released dyes (for example azo dyes ) and / or colored particles and thus prevent these dye impurities from being absorbed onto differently colored textile fibers .
Individual evidence
- ^ Günter Wagner: detergents: chemistry, environment, sustainability . Wiley, 2017, ISBN 978-3-527-80982-0 , p. 135.
- ^ Tiffany Watson: Chemical Engineering . Lotus Press, 2009, ISBN 978-81-89093-20-4 , p. 71.
- ↑ Entry on color transfer inhibitors. In: Römpp Online . Georg Thieme Verlag, accessed on July 21, 2017.