Application of zwitterionic silicone surfactants in daily chemical industry 5
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The sulfobetaine-type silicone surfactant is generally prepared by capping a polyether-modified silicone with a sulfonate-containing betaine group. SNOW and others first synthesized a series of amino-containing siloxane monomers through hydrosilylation, and then reacted with 1,3-propanesultone or 1,4-butanesultone to prepare a series of sulfo Betaine type silicone surfactant. Studies have found that some sulfobetaine silicone surfactants can reduce the surface tension of water to 21 mN / m when the mass fraction is 0.005% to 0.5%, and have excellent surface activity in cleaning and cleaning cosmetics.
