Abstract: A macroemulsion which is stable to separation and crystallization over a wide range of temperature is disclosed. These macroemulsions contain:0.0001 to 30% by weight of at least one solid pyrethroid,0.0005 to 50% by weight of an aromatic diluent,0.0001 to 15% by weight of polyvinyl alcohol having a mean molecular weight of between 5,000 and 60,000 and a content of acetate groups of between 2 and 30 mol %, if appropriate as a mixture with polyvinyl alcohol having a mean molecular weight of between 70,000 and 150,000 and a content of acetate groups of between 2 and 30 mol %,and water and acid and, if appropriate, further additives in which the oil phase is dispersed in the aqueous phase in the form of droplets having a mean particle diameter of 0.1 to 3.0 .mu.m.

Abstract: The invention relates to a process for preparing fine-particled, stable, pharmaceutical or cosmetic dispersions which comprises dispersing the entire inner phase in 5-40% by volume of outer phase, then adding the remainder of the outer phase, all under predetermined conditions.

Abstract: The instant invention is directed to the production of polyurethane or polyurea powder. The process broadly comprises atomizing an isocyanate, polyisocyanate or isocyanate pre-polymer in the liquid state and bringing the atomized particles into contact with a gaseous diamine or polyamine until they are converted to the solid state.