| abstract |
The present invention relates to the use, as heat-thickening agents, of multiblock copolymers of general formula (I) or (II) (CF DRAWING IN BOPI) (CF DRAWING IN BOPI) in which: - E represents a polyoxyalkylene block, each link alkylene having at most 6 carbon atoms, - A represents a water-soluble polymer block resulting from at least one monomer chosen from ethylenic monomers, - X is a sulfur or oxygen atom, - Y is an oxygen atom or an -N-R 'group, R' being :. a linear or branched alkyl group, optionally comprising at least one heteroatom and optionally a tertiary amine group, or. a C3 -C8 cycloalkyl radical, or. an aryl, aralkyl or alkylaryl group, - R is a linear or branched alkyl, aralkyl or alkylaryl group, - n is such that the molecular mass of the multiblock copolymers Mp is greater than 250,000 g / mol. |