Microcapsules and encapsulation thereof

A microcapsule comprising a lipophilic core material and a microcapsule shell wherein said microcapsule shell is formed from oil-in-water emulsion polymerisation of a mixture of monomers, more than 50 percent by weight of the mixture of monomers consisting in monomers having a density higher than 1.05, said mixture of monomers comprising a) more than 30 percent by weight of one or more of ethylenically unsaturated acid monomer(s) based on the total weight of the mixture of monomers, b) one or more monofunctional acrylate and/or methacrylate monomer(s), c) one or more multifunctional acrylate and/or methacrylate monomers, and d) vinyl acetate monomer.