A pH-sensitive release system comprising a capsule capable of releasing an agent in both low pH environments and high pH environments. The capsule encapsulates an SrCrO.sub.4 agent and comprises at least two weak polyelectrolytes (e.g., PEI and PAA). The capsule responds to both low and high pH changes in the local environment by releasing the agent. The agent may include a corrosion inhibitor and may help prevent or ameliorate the effects of corrosion.

Described herein are compositions and articles related to droplets comprising a carrier fluid and a cloaking fluid, and associated methods of and devices for depositing the droplets on surfaces.

A fire-retardant particle comprises a core formed of an aqueous solution and one or more inorganic compounds, which comprise ammonium phosphate. The particle further comprises a waterproof shell encasing the core. In an embodiment, a method of fighting a fire comprises encasing a hydrated fire-retardant compound in a waterproof shell of a fire-retardant particle. The fire-retardant particle is deployed in an area of fire. Moisture within the waterproof shell is heated by the fire. The waterproof shell ruptures as a result of the heated moisture so as to deploy the fire-retardant compound.

A consumer product including a personal care composition providing multiple blooms of fragrance, the multiple blooms being provided for by different populations of microcapsules.

Use of an encapsulated natural color for coloring a household, industrial or institutional (HI&I) product wherein the encapsulated natural color is stable in water to simulated solar irradiation at 765 Watt in accordance with International Commission on Illumination 85 (1989, Table 4, 3 mm window glass) reference sun for a period of between 8 hours and 16 hours.

Disclosed is an electrostatic spray drying process for encapsulating a core material, such as a volatile flavor oil, within a carrier or wall material. The process is achieved by atomizing a liquid emulsion comprising the core material and the wall material, applying an electrostatic charge at the site of atomization, and drying the atomized emulsion into an encapsulated, free-flowing powder. Applying an electrostatic charge at the site of atomization allows the spray drying to be accomplished at significantly reduced temperatures, in particular, inlet temperatures in the range of 25° C. to 110° C., and outlet temperatures in the range of 25° C. to 80° C. The low drying temperatures impart improvements in the resulting encapsulated powdered product, including better retention of volatile flavor components, a flavor profile comparable to that of the starting liquid formulation, and better hydration and dissolution in water-based applications.

Systems and methods are provided for microencapsulating oxygen sensitive cargo such as polyunsaturated fatty acids and other oils by spray drying with an in situ internal gelation mechanism achieving cross-linking of polymers during the process, which is well-suited for industrial scale-up. Spray drying formulations of a mixture of an immiscible hydrophobic cargo and an emulsifier of a hydrophobically modified hydrophilic polymer with a suspension of a multivalent ion cross-linkable polymer, at least one acid, at least one volatile base and at least one salt of a multivalent ion can be adapted to provide control over particle size, degree of crosslinking, enteric release of cargo and shelf life. The methods produce microcapsules that enhance the shelf life of lipophilic bioactives while providing a mechanism of gastrointestinal delivery.

The present invention discloses a microencapsuled conjugated linoleic acid glyceride powder and a preparation method thereof. The preparation method comprises the steps of preparing raw materials, preparing an aqueous phase and an oil phase, preparing an emulsion, and spray drying. The raw materials comprise, in parts by mass: 60-85 parts of conjugated linoleic acid glyceride, 5-35 parts of starch or colloid, 4-20 parts of small molecule filler, and 0.01-5 parts of antioxidant.

An industrially scalable microcapsule, fiber or film forming process and formulations suitable for use in conventional spray drying systems are provided. The one-step spray drying process utilizes formulations of a first ionic polymer, a second ionic polymer with an isoelectric point (pI.sub.2) or acid dissociation constant (pKa.sub.2) that is greater than the isoelectric point (pI.sub.1) or acid dissociation constant (pKa.sub.1) of the first ionic polymer and a volatile base or volatile acid. Volatilization of the volatile base or acid of the spray formulation changes the pH of the solution and changes the charge of the second ionic polymer initiating electrostatic interactions with the first ionic polymer through complex coacervation. Microcapsules formed by the complex coacervation process can stabilize bioactive components as well as control the release of the bioactive components for a variety of applications.

The present invention relates to a cooling composition for producing cooling particles comprising a solvent component and dissolved therein (1R,2S,5R)-N-(4-methoxyphenyl)-5-methyl-2-(1-methylethyl)-cyclohexane-carboxamide. The present invention further relates to cooling particles comprising a cooling composition according to the invention, oral preparations comprising cooling particles, new uses of cooling particles, a process for the production of cooling particles as well as the use of a solvent component for dissolving cooling agents.