NOVEL POWDER POLYMER, METHOD FOR THE PREPARATION THEREOF, AND USE AS A THICKENER

摘要

The invention relates to a cross-linked anionic polyelectrolyte resulting from the polymerization, for 100 mol%: (i) of a proportion no smaller than 30 mol% and smaller than 99.5 mol% monomer units from a monomer having a partially or totally salified strong acid function; (ii) of a proportion no smaller than 0.5 mol% and no greater than 5 mol% monomer units from at least one monomer having Formula (I): CH2=CH(CH3)-C(=0)-OR1 (I), wherein Ri is an alkyl radical comprising 6 to 18 carbon atoms; (iii) of a proportion greater than 0 mol% and no greater than 5 mol% monomer units from at least one diethylene or polyethylene cross-linking monomer; and (iv) optionally, of a proportion smaller than 69.5 mol% monomer units from a neutral monomer. The invention also relates to a method for preparing said polyelectrolyte and to the use thereof as a thickener in topical compositions.