The novel compounds fluorinated nonionic, their process of preparation and their applications as surfactant - the active

摘要

The invention relates to non ionic fluorinated compounds having the formula RFC hd 2H4S(R)H, wherein R designates a C2H4X unit with X=O or S, or a chain exclusively comprising several such units, and two consecutive units can be identical or different, and RF is a perfluorinated alkyl group exclusive of compounds having the formula: RFC2H4SC2H4OH, RFC2H4S(C2H4O)2H and RF(C2H4S)2H and the mixtures of such compounds, in particular, the mixtures of the above defined products differing from one another by the length of their perfluorinated chain, but having the hydrophilic portion of the molecule identical from one product to the other. To obtain them, a compound having the formula RFC2H4SH is reacted on an ethylene or polyethylene glycol monochlorohydrin; the alcohol function of the resulting product is also converted to thiol function and then the so obtained product is reacted on such a monochlorohydrin and the resulting alcohol function is again transformed to thiol function, and so on, up to obtaining the desired number of C2H4O and/or C2H4S groups. Application as non ionic surfactant agent.