Abstract:
PROBLEM TO BE SOLVED: To provide a method for simultaneous protection of human and animal hair and skin against UV radiation and oxidative damage.SOLUTION: The invention relates to simultaneous protection of human and animal hair and skin against UV radiation and oxidative damage by administering as cosmetic compositions benzotropolone derivatives presented in the following formula: [R, R, and Rare H; Rand Rare H or alkyl; Ris COORor CONRR; Rand Rare H or alkyl; Ris H, hydroxy, alkyl, or hydroxyalkyl; Ris H and hydroxy, alkyl, alkoxy or a monosaccharide, disaccharide, or oligosaccharide residue linked in a α- or β-mode to a benzotropolone ring system; the residue is hexose or pentose subunits].
Abstract:
The invention relates to glycerol acetal polyethers of general formula (I) or (II), wherein R1, R2, R3, R4, R5, and n have the meaning specified in the description. Said glycerol acetal polyethers are suitable as electrolyte solvents in a lithium cell, in particular a lithium-sulfur cell. The hydroxyl content of said glycerol acetal polyethers is preferably less than 0.2 wt %. In a method for producing said glycerol acetal polyethers, glycerol acetal polyether alcohols are reacted with a C1-C18 mono- or dialkyl sulfate or C1-C18 mono- or dialkyl sulfonate in the presence of an alkaline earth.