| abstract |
To prepare these macromonomers represented by the formula (PA) n-F or F-PA-F, where PA is a (meth) acrylic polymer block; n is 1,2 or 3; F is a group terminated by O <->, OH or by a vinyl radical, with the condition that F is a group terminated by O <-> or OH when PA is a methacrylic sequence and n is 1, anionic polymerization is carried out of a monomer A, using an initiator system capable of leading to the formation of a living polymer sequence PA <-> or <-> PA <-> and consisting of at least one initiator respectively monofunctional or bifunctional and at least one ligand; then reacting the living link obtained with a functionalizing agent to obtain a macromonomer having one or two vinyl or O <-> terminations. If the macromonomer obtained has at least one O <-> end, it can be reacted with a second functionalizing agent to obtain a macromonomer having at least one OH or vinyl end. |