| abstract |
PURPOSE: To obtain a liquid oil for cosmetic base, having low viscosity, low melting point, excellent hydrolytic resistance and low irritation in spite of polarity, comprising a 1,2-disubstituted glycerin such as 1-O-octyl-2-O- hexadecylglycerin. n CONSTITUTION: A liquid oil comprising a 1,2-disubstituted glycerin (e.g. O-methyl branched isostearyl-2-O-hexylglycerin) shown by formula I (R 1 and R 2 are 1-24C straight-chain alkyl, 3-24C branched or cyclic alkyl, alkenyl, hydroxyalkyl and the number of total carbons of both R 1 and R 2 is 8-30). The compound shown by formula I is obtained by reacting a 1,3-disubstituted glycerin shown by formula II (Bn is benzyl) with an alkyl or alkenyl halide shown by formula III (X is halogen) and then hydrogenating the prepared compound shown by formula IV. Addition of the oil to cosmetic simultaneously develops good touch, excellent affinity for skin and safety. The oil is also useful as a finishing oil for yarn, lubricant, etc. n COPYRIGHT: (C)1991,JPO&Japio |