| abstract |
Antifoaming systems appropriate for use in surfactant-containing washing and cleaning products contain a bisamide derived from diamines and carboxylic acids. In order to make it easier to transform such antifoaming systems into pourable, silicium-free antifoaming agents and to improve their efficiency in a wide temperature range, while maintaining their efficiency and the storage stability of the antifoaming system and of the antifoaming agent containing said antifoaming system mixed with usual components of washing products, with no disadvantageous effects for the treated goods and for the environment, an antifoaming mixture is prepared from a C2-7-diamine and a saturated C12-22-carboxylic acid, 20 to 99.9 % by weight of at least one ester of a C12-22-carboxylic acid and a C1-40-alcohol, up to 79.9 % by weight of a paraffin wax or a paraffin wax mixture with a setting point not lower than 25 DEG C, and up to 79.9 % by weight of at least one C12-28-carboxylic acid. |