| abstract |
A particle containing at least one volatile substance and comprising (i) a core comprising at least one matrix material and the at least one volatile substance and (ii) at least one coating layer characterized in that a) the matrix material is select from the group of fats, hydrogenated triglycerides and waxes that are solid or semi-solid at 20 ° C and 1 atmosphere (1,013.25 hPa), b) the core contains from 30% by weight to 97% by weight of matrix material, with With respect to the total mass of the nucleus, c) the at least one volatile substance contained in the nucleus has a vapor pressure at 125 ° C of between 10 mmHg (13.33 hPa) and 200 mmHg (266.64 hPa), d ) a first coating layer is a non-confluent layer comprising at least one carrier material, e) the carrier material is an inorganic material with a porous structure and a D50 of 1 to 300 μm, f) the core has a medium surface coverage by the non-confluent layer from 1% to 50%, where, optionally, the layer does not contain fluent contains at least one hydrophobic substance and, optionally, the particle is surrounded by at least one confluent layer and / or one or more other non-confluent layers, where the presence of the first non-confluent layer increases the recovery of the volatile substance in the nucleus during granulation or fluidization of the particle. |