Jun 24, 2009· 1. Method for the homopolymerisation of acrylic acid and of the salts thereof, or the copolymerisation of acrylic acid with one or more water-soluble monomers, in solution, for obtaining non cross-linked polymers, characterised in that, as a transfer agent or agents, it uses products chosen from amongst those defined by the general formula: R-----X-----C(S)-----S-----R' in which: X = O or S, R ...