Innov'ia 3i

Idcaps

Innovia LLC

Sprainnov

Pierre Buisson

Jean-Eudes Vendeville

Robert Huet

Sebastien Fournier

Carine Chaigneau

Alain Grizeau

Fabrice Richard

Jean-Marc Chicheportiche

Jean Pierre Renaudeaux

Jean-Baptiste Zainoun

Claude Chesse

Jean-Pierre Renaudeaux

Sébastien Fournier

Disclosed are pulverulent compositions of a complex between an acid and a metal, having a high organosulfur compound content, and method for preparing same.

Pulverulent compositions of a complex between an acid and a metal having a high organosulfur compound content and method for preparing same

Disclosed is a microcapsule including a core having an oxidizable active (OA), the outer part of said core being in a solid form, and a water insoluble coating obtained from an encapsulating agent (EA), with the coating surrounding said core. In particular, the EA can be water soluble or organic solvent soluble, in particular in ethanol. The microcapsule can also include an EA in which the water solubility is pH-dependent. Also, the core does not contain a metal oxide, and the coating does not include a disintegrant, such as sodium starch glycolate. Also disclosed is a process for preparing the microcapsules.

Microcapsules containing an oxidizable active, and a process for preparing the same

Pulverulent compositions of a complex between an acid and a metal form an at least partially spherical particle. The acid is selected from 2-hydroxy-4-methyl-thiobutanoic acid (HMTBA), methionine, aspartic acid, the alginic acids, the pectinic acids, and the corresponding anions, in particular 2-hydroxy-4-methyl-thiobutanoate, methioninate, aspartate, the alginates and the pectinates. The metal is divalent or trivalent. The particle has an amorphous fraction the mass of which represents at least 50% of the total mass of the particle. The particle is substantially devoid of uncomplexed acid or anion and of uncomplexed metal or metal cation.

Pulverulent compositions of a complex between an acid and a metal and method of preparation thereof

A pulverization head of an apparatus includes a motor whose vertical hollow shaft is integrally linked, at its lower end, to a centrifugal ejection disc. The substance to be pulverized, coming from a tank via a proportioning pump, crosses the hollow shaft to be spread in a thin layer on the lower surface of the disc forming the centrifugal ejection face. Elements are designed to vibrate the peripheral edge of the disc and control the pulverization of the substance. A fan and a distributor produce a treatment gas flow which meets and draws droplets towards a collection zone, solidifying them by drying or freezing. Typically, the substance is a mixture of at least one active ingredient and a microencapsulation constituent. For use to obtain very fine and/or very homogeneous particle size, to manufacture powders for food processing, nutritional, cosmetic, pharmaceutical and fine chemical applications. The head is useful to produce aerosols.

Method and pulverisation head, associated method and apparatus to manufacture a product in powder form

Disclosed is a microcapsule including a core having an oxidizable active (OA), the outer part of said core being in a solid form, and a water insoluble coating obtained from an encapsulating agent (EA), with the coating surrounding said core. In particular, there is disclosed a microcapsule wherein the EA is water soluble or organic solvent, in particular ethanol, soluble, or a microcapsule wherein said EA is an agent, the water solubility of which is pH-dependent. In particular, the core does not consist in or comprise a metal oxide, and the coating does not comprise a disintegrant, in particular sodium starch glycolate. Also disclosed is a process for preparing the microcapsules.

Method of preparing a non-hygroscopic pulverulent composition, includes a step for the spray drying, without an atomization support, of an aqueous solution containing at least one initially hygroscopic product, having a glass transition temperature ranging from 10&#xb0; C. to 110&#xb0; C., and a cryogenic fluid, especially a food-grade cryogenic fluid, or a mixture of cryogenic fluids, particularly chosen from liquid air, nitrogen and carbon dioxide, the aqueous solution being obtained by dissolving the cryogenic fluid in an initial aqueous solution containing the initially hygroscopic product.

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Lagord, France

Pierre Buisson