| abstract |
The invention concerns pseudoceramides of formula I (I) in which R<1>CO stands for a hydroxyacyl group having 3 to 8 carbon atoms and 2 to 7 hydroxy groups, and R<2> and R<3> can be identical or different and stand for hydrogen, a linear or branched alkyl group having 1 to 50 carbon atoms, or a group of formula II (II), in which R<4> stands for an alkylene group having 1 to 18 carbon atoms, which can contain a further ester group, COO-R<6>, in which R<6> is a linear or branched alkyl group having 1 to 50 carbon atoms, and R<5> is a linear or branched alkyl group having 6 to 50 carbon atoms, provided that at least two of the groups R<2>, R<3>, R<5> and R<6> are long-chain groups having 6 to 50 carbon atoms, or at least one of the groups R<2>, R<3>, R<5> and R<6> is a branched alkyl group, the branches comprising at least 6 carbon atoms. The compounds are suitable as "synthetic barrier lipids" for preparing skin-care products. |