Patent ID: 8034887

Claim:
A process for preparing a microcapsule comprising a lipophilic capsule core and a capsule wall synthesized from 30% to 100% by weight, based on the total weight of monomers, of one or more monomers (monomers I) selected from the group consisting of C 1 -C 24 alkyl esters of acrylic acid, C 1 -C 24 alkyl esters of methacrylic acid, acrylic acid, methacrylic acid, and maleic acid, 0% to 70% by weight, based on the total weight of the monomers, of one or more difunctional or polyfunctional monomers (monomers II) which are sparingly soluble or insoluble in water, and 0% to 40% by weight, based on the total weight of the monomers, of one or more other monomers (monomers III), comprising preparing an oil-in-water emulsion comprising monomers and lipophilic substance, an SiO 2 -based protective colloid, and a methylhydroxy-(C 1 -C 4 )-alkyl-cellulose having an average molecular weight ≦50 000 g/mol and subsequently carrying out a free-radical polymerization.