Silicone antifoam agent S841 and S269 are special designed for textile pretreatment step,Normal defoaming agent have defeats of demulsification and floating oil,this two types solves the problem very well and with good capability for suppressing foams.

　　Defoamers belong to metastable system,in hydrophilic environment easy to break the emulsion and create floating oil, anion and nonionic surfactant and other auxiliaries will be added while kier-boilling,that will lead foam problems, this required defoamer its have good anti foam perfoamance and no adverse side effect to application system. Antifoams could be added in auxiliaries like penetrant or during the pre-processing .

　　Silicone antifoam agent S841 s one highly effective and versatile foam control agent. It offer quick bubble break performance, excellent persistency. It shows excellent defoaming performance through a wide temperature range (25°C-100°C) and stable effects in strong alkaline (pH 10.0-12.0), good foam control performance can be achieved by small dosage.

　　Silicon antifoaming agent S269 is a kind of emulsion type modified silicone antifoam agent, it is composed of polysiloxane, modified polysiloxane, silica, dispersing agent and stabilizing agent etc, and it offer quick bubble break performance, excellent persistency ability.