| 摘要 |
<p>Use of perfluoroalkylethyl alkanoate esters of formula RfC2H4OCORh (I), (where Rf = 4-20C perfluoroalkyl and Rh = 1-29C alkyl) to prepare stable emulsions comprising at least one oil phase and an aq. phase is new. Also claimed are emulsions comprising an oil phase and an aq. phase, where the oil phase consists essentially (see below) of one or more cpds. (I). Also claimed are cosmetic, sanitary, pharmaceutical or food compsns. contg. an emulsion as above. (I) is 2-perfluorooctylethyl hexanoate, 2-decyltetradecanoate, octanoate, octadecanoate, docosanoate or decanoate, or 2-perfluorohexylethyl 2-butyloctanoate, 2-ethylhexanoate or octanoate. (I) are used to prepare emulsions which: contain 0.1-30 (esp. 0.5-20) wt.% (I); may also contain opt. fluorinated hydrocarbon oils, silicone oils and/or perfluorinated oils; are o/w, w/o or multiple emulsions; and/or have an aq./oil phase ratio of 0.1-9, esp. 1.5-5. (I) make up≥50 (esp.≥75) wt.% of the oil phase, which may also contain oil-soluble additives, esp. vitamins, perfumes, fatty acids, lipids and ceramides.</p> |
