| 摘要 |
PROCESS FOR REMOVING FOAM FROM AQUEOUS SYSTEMS A process for removing foam from aqueous systems such as for example effluents or dyeing and finishing baths for treating textile materials is provided. The wetting and anti-foaming compositions used in this process contain (1) 2 to 50 percent by weight of an anionic surfactant, (2) 6 to 50 percent by weight of a water-insoluble aliphatic monoalcohol containing at least 8 carbon atoms, a reaction product of alkylene oxides and a waterinsoluble aliphatic monoalcohol containing at least 8 carbon atoms, a reaction product of alkylene oxides and an alkylphenol, a reaction product of a saturated dicarboxylic acid of 3 to 10 carbon atoms and 1,2-propylene oxide or polypropylene glycols, a reaction product of a fatty acid containing 10 to 18 carbon atoms and 1,2-propylene oxide or polypropylene glycols, a reaction product of a fatty acid containing 10 to 18 carbon atoms, a trihydric to hexahydric alcohol and 1,2-propylene oxide, or a reaction product of a fatty acid containing 10 to 18 carbon atoms, a polyalkylenepolyamine and 1,2-propylene oxide, (3) 0 to 30 percent by weight of silicone oil and (4) 2 to 92 percent by weight of water. |
