A composition is provided, comprising microcapsules, wherein said microcapsules comprise a core and an outer shell, wherein said core comprises one or more water-insoluble compound having melting point above 15° C., and wherein said outer shell comprises one or more amino resin that is a reaction product of reactants comprising (a) one or more monomer polyamine, (b) one or more aldehyde, and (c) one or more compound (c) selected from the group consisting of additive diamines, additive diols, additive amino-alcohols, and mixtures thereof.Composición que costa de microcápsulas que tienen un núcleo central y una cubierta exterior, útil para liberar el material central compuesto por un biocida insoluble en agua, tal como 4-isotiazolin-3-ona, aun después de haber sido almacenadas en estado seco.
