Color-protecting washing or cleaning agent
OwnerBirgit Gluesen, Mareile Job +4inventors
InventorsBirgit Gluesen, Mareile Job, Roland Ettl, Evgueni Klimov, Christian Schmidt, Markus Brym
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Abstract
The color preservation of detergents and cleaners during their use for the washing or cleaning of colored textiles may be improved through the use of fiber-like polyamides in a washing composition. Color transfer inhibition arises through the use of water-insoluble polyamides when these are present in the form of fibers with a small fiber diameter. This invention relates to fibers, compositions and methods relating to inhibition of color transfer in the washing or cleaning of colored textiles.
Claims12
A detergent, washing additive composition, laundry pretreatment composition or cleaner, comprising a color transfer inhibitor in the form of fibers consisting of water-insoluble polyamide, the average diameter of which is not more than 2 μm, and one or more surfactants, selected from the group consisting of anionic surfactants, nonionic surfactants, cationic, zwitterionic, amphoteric surfactants and mixtures thereof.
A method for washing colored textiles in surfactant-containing aqueous solutions, wherein colored textiles are added to a surfactant-containing aqueous solution which comprises fibers consisting of water-insoluble polyamide, the average diameter of which is not more than 2 μm.
A polyamide fiber of water-insoluble polyamides which have amino groups and optionally carboxyl groups, where, on average, the content of amino groups outweighs the content of carboxyl groups, wherein the average diameter of the polyamide fibers is not more than 2 μm.
The polyamide fiber according to 9 which has at least one of the following features i) to iv):
- i) the average diameter of the polyamide fibers is in the range from 10 nm to 1000 nm;
- ii) the polyamide fibers have a BET surface area in the range from 0.5 to 50 g/m2;
- iii) the polyamides forming the polyamide fibers have amino groups and optionally carboxyl groups and a content of amino groups of at least 40 mmol/kg;
- iv) the polyamides forming the polyamide fibers have amino groups and optionally carboxyl groups, where content of carboxyl groups have which is less than 100 meq/kg and at least 10 meq/kg is below the content of amino groups.
Dependencies are inferred from the claim text.