| abstract |
Process for the preparation of crosslinked poly β-alanine in the form of microspheres having a low size dispersity.n n n This process, which is carried out in a single step, consists in polymerizing acrylamide with a polyfunctional compound copolymerizable with acrylamide, as crosslinking agent, in an organic solvent or a mixture of such solvents in the presence of an anionic initiator polymerization and a suspending agent.n n n Use of the microspheres obtained for the impregnation of an active pharmaceutical or cosmetic substance. |