Synthesis de tensioactifs F-alkyles non ioniques monodisperses

Synthesis of Novel Polythiol for Plastic Optical Lens and its Ophthalmic Lens

“…Compound including OH group can be converted into SH group via the reaction of SOCl2 with thiourea 9 or HBr with thiourea. [10][11][12] In recent, it was synthesized by hydrolysis of KOH or ammonia water in refluxing base conditions via isothiouronium made using HCl and thiourea. [13][14] In this work, thiol materials were prepared by hydrolysis of ammonia via isothiouronium obtained using HCl and thiourea as shown in Scheme 1 and 2.…”

Preparation and Evaluation of Monodisperse Nonionic Surfactants Based on Fluorine-Containing Dicarbamates

“…However, some applications such as microemulsion development require the use of nonionic surfactants perfectly well defined in their formulation, i.e., in the present case, a whole and unique ethoxy moiety number. For the requirements of application field, numerous monodisperse compounds have been obtained from the action of oligoethylene glycol monomethylated monotosylated (14,15) or oligoethylene gycol monochlorinated (16)(17)(18). These can themselves be precursors of polypodal nonionic compounds (19).…”

Novel perfluoroalkylated oligo(oxyethylene) methyl ethers with high hemocompatibility and excellent co-emulsifying properties for potential biomedical uses

“…The first, a very efficient test, was stability of emulsions during 5 min centrifugation ( Table 2). It was surprising that the amphiphiles (10) À À À À À MeO(CH 2 CH 2 O) 3 -CH 2 CH(OH)CH 2 -C 6 F 13 (11) Emulsions were not formed a MeO(CH 2 CH 2 O) 3 -CH 2 CH(OH)CH 2 -C 8 F 17 (12) Emulsions were not formed a MeO(CH 2 CH 2 O)-CH 2 CH 2 CH 2 -C 6 F 13 (24) + + + + À MeO(CH 2 CH 2 O) 2 -CH 2 CH 2 CH 2 -C 6 F 13 (25) + + + + À MeO(CH 2 CH 2 O) 3 -CH 2 CH 2 CH 2 -C 4 F 9 (26) À À À À À MeO(CH 2 CH 2 O) 3 -CH 2 CH 2 CH 2 -C 6 F 13 (27) + + + À À MeO(CH 2 CH 2 O) 3 -CH 2 CH 2 CH 2 -C 8 F 17 (28) + À À À À [Xylitol-1-yl]-CH 2 CH(OH)CH 2 -C 6 F 13 (31) c + + + + À a For the compounds 11 and 12, the emulsions were not formed by initial sonication. b Plus (+) means no apparent change of the emulsion; minus (À) means colaps of the emulsion.…”

“…When comparing the effect of the perfluoroalkyl length, it can be seen that perfluorobutyl causes instability of emulsions at all concentrations (amphiphiles 8 and 26). Stable emulsions at high concentrations of co-emulsifier are those bearing perfluorohexyl: substitution of Pluronic up to 60% (9,27), 80% (24,25) or 100% (7) was found. On the other hand, perfluorooctyl also caused almost complete instability of emulsions (compounds 10 and 28).…”

“…lated groups or saccharides [8,9,[19][20][21][22][23], poly(oxyethylene) chain or 2-hydroxyethyl groups [4,14,[24][25][26][27][28][29], sulfinyl or sulfone group [20,21,[29][30][31], and organic salts [19,[31][32][33] were employed. Herein, we describe the synthesis of perfluoroalkylated amphiphiles consisting of oligo(oxyethylene) hydrophilic part and trimethylene spacer.…”