Abstract: The present invention is directed to a process for fixing or entrapping a fixable agent, such as acetaldehyde, in a carrier matrix, such as starch hydrolysates having a dextrose equivalent of not greater than about 28, to impart a stable, free flowing particulate configuration to the carrier-fixed agent. The process is achieved by impinging aqueous droplets containing the fixable agent onto particles of the carrier material in a manner which causes dissolution of the carrier particles into the droplets to form a saturated solution of the carrier in the droplet. A film then forms on the surface of the saturated droplet solutions by preferential evaporation of the water therefrom. This causes the droplets to set to a permanently particulate form thereby entrapping the fixable agent.

Abstract: Fragrance releasing crystal beads are provided which gradually release a fragrance under anhydrous conditions and provide a rapid release of fragrance when wetted. The beads comprise a water-soluble particulate carrier, e.g. prilled urea, coated with a finely divided highly absorptive inorganic matrix containing the fragrance. The beads optionally include emollients and bacteriostats and the like and can be used for pleasingly perfumed sachets or as bath beads or as agents for the control of malodors in pet litter. The particulate beads may be conspicuously colored such that their color substantially disappears as they are dissolved, giving a visual indication of the need for replenishment.