Microcapsules, a process of making such microcapsules and compositions utilizing such microcapsules

摘要

A method of forming active-containing microcapsules by the steps of(i) emulsifying the active in water in the presence of a polymeric emulsifier;(ii) adding to the emulsion thus formed a blend of at least 2 silanes and hydrolysing them prior to(iii) forming a shell by increasing the pHcharacterised in that(iv) the polymeric emulsifier also acts as a templating agent for the organosilicon compounds;(v) the silanes are compounds of the Formula I; in which R is independently C₁-C₄ linear or branched alkyl or alkene, optionally comprising a functional group selected from amino and epoxy, m is from 1-4, and selected such that there is present at least 2 silanes with different functionalities m. ;The resulting microcapsules have excellent properties, and are especially effective for use with fragrances.