| abstract |
The perfluoroalkyL surfactant (PAS) of the general formual C x F 2x+1 (CH₂) n S(CH₂) n ,CO₂M wherein x is an integer of 3-8, each of n and n′ is an interger of 2-4 and may be the same or different and M is hydrogen, an alkali metal or ammonium, provides an oral composition, such as a dentifrice or a mouthwash with effect in prevent plaque formation. A preferred PAS is Zonyl FSA, C₃₋₈F₇₋₁₇(CH₂)₂S(CH₂)₂COOLi. |