#$%^&*AU2015100509A420150521.pdf#####ABSTRACT A method of encapsulation of an active comprising (a) dispersing an active in an aqueous medium having a pH of less than 6 (b) causing the formation on this dispersed active of a polymer shell, the formation comprising the sequential deposition of a series of polymeric layers, each layer being capable of hydrogen bonding with the preceding layer to form an aqueous slurry of activecontaining capsules characterised in that one of the first two layers is a polycarboxylic acid and that the first two to four layers taken together exhibit an interfacial compression dilation modulus of greater than 10 mN/m. The method allows the precise tailoring of polymeric shells, allowing capsules walls to be much thinner without a loss of strength. The technique is especially useful for the encapsulation of fragrances and flavours.
