| abstract |
The invention relates to the field of block copolymers, particularly in the field of water-soluble or water-dispersible copolymers consisting of two blocks whose majority block is a hydrophilic thermoplastic block. More particularly, the invention relates to a block copolymer consisting of an elastomeric block, partially or totally hydrophilic, having a Tg lower than 30 ° C and comprising at least one hydrophilic monomer, and a water-soluble thermoplastic block having a Tg greater than 30 ° C and comprising at least one monomer having a carboxyl group, said copolymer being extrudable and granular, said copolymer being partially or totally soluble in water or in aqueous medium, and the mass proportion of the thermoplastic block being greater than 50% of the weight of said copolymer. |