Poly(meth)acrylate based microcapsules comprising pheromone

A microcapsule comprising a capsule core, which contains a pheromone and a water-immiscible organic solvent, and a capsule wall, which contains in polymerized form

• 30 to 90% by weight of one or more C1-C24-alkyl esters of acrylic acid and/or methacrylic acid, acrylic acid, methacrylic acid and/or maleic acid (monomers I),
• 10 to 70% by weight of one or more difunctional and/or polyfunctional monomers (monomers II), and
• 0 to 40% by weight of one or more other monomers (monomer III),
• in each case based on the total weight of the monomers,
• wherein the pheromone is present in dissolved form in the capsule core,
• wherein the capsule core contains an attractant selected from non-food attractants and food attractants, and wherein the non-food attractants are flavors of natural or synthetic origin, or mixtures thereof,
• wherein the water-immiscible organic solvent has a solubility in water of up to 10 g/l at 20° C.,
• wherein the difunctional monomers are divinylmonomers selected from diesters of diols with acrylic acid or methacrylic acid, and diallyl and divinyl ethers of diols, and
• wherein the polyfunctional monomers are polyvinylmonomers selected from polyesters of polyols with acrylic acid and/or methacrylic acid, polyallyl and polyvinyl ethers of polyols, trivinylbenzene and trivinylcyclohexane.