| http://www.w3.org/ns/prov#value | - Water-solubility of fluorochemical surfactants was defined in U.S. Pat. Nos. 3,562,156 and 3,772,195 in such a way that the combination of the fluoroaliphatic radical and the water solubilizing group be so balanced as to provide a solubility in water at 25??? C. of a least 0.01 percent by weight and preferably 0.15 percent, particularly in the case where an aqueous film forming foam concentrate ha
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