Abstract: The present invention relates to biodegradable microcapsules with a membrane formed of a biodegradable composite material and their synthesis. Biodegradable microcapsules obtained as described in the present invention consist of a core material comprising at least one liquid water-immiscible active component, and a membrane that encloses this core material, the membrane consisting of a composite material comprising a carrier polymer framework and at least one filler deposited into the pores of said carrier polymer framework and deposited onto the surface of said carrier polymer framework, wherein the carrier polymer framework is made of at least one polymer and the filler is a lipophilic biodegradable organic compound which is solid at room temperature and has a melting point above 40° C. The thickness of the membrane is between 20 and 200 nm and the microcapsule diameter is between 1 and 50 pm.

Abstract: The invention relates to paint, ink and other coating formulations, particularly alkyd-based formulations comprising metal driers, such as iron-containing and manganese-containing compounds, which exhibit a reduced propensity to develop a skin on storage.