Cosmetic composition, useful as e.g. sunscreen product, comprises, dissolved or dispersed in a medium, a linear diblock polymer having a block comprising ethylene oxide repeating units, and a block comprising ethylene repeating units

摘要

Cosmetic composition (I) comprises, dissolved or dispersed in a medium, a linear diblock polymer consisting of a first block comprising ethylene oxide repeating units (a), and a second block comprising ethylene repeating units (b) or their salts. Cosmetic composition (I) comprises, dissolved or dispersed in a medium, a linear diblock polymer consisting of a first block comprising ethylene oxide repeating units of formula ([-CHR1a-CHR2a-O-] p) (a), and a second block comprising ethylene repeating units of formula (-[CH 2-C(R)(Cat)] n-) (b) or their salts. R1a, R2a : H or methyl group; R : H or methyl; p, n : = 2; Cat : group comprising NH 2, NHR2a, NR2aR3a, R1a-NH 2, R1a-NHR2a or R1a-NR2aR3a or a ring comprising pyridin-2-yl, 1H-pyrazol-1-yl, piperidin-4-yl or piperazin-1-yl; R1a : optionally saturated, linear, branched or cyclic 1-30C, preferably 2-6C divalent alkyl; and R2a, R3a : optionally saturated, linear, branched or cyclic 1-30C, preferably 2-6C monovalent alkyl group, preferably -CH 2-CH=CH 2.