Microcapsules, their use and processes for their manufacture

Details Microcapsules, their use and processes for their manufacture Microcapsules, their use and processes for their manufacture

B - Operations, Transporting

01

J

B01J 13/14 (2006.01)

Patent

CA 2670761

A microcapsule comprising a core containing a hydrophobic liquid or wax within a polymeric shell, in which solid particles insoluble in the hydrophobic liquid or wax are distributed throughout the core, wherein an oil soluble dispersant polymer is adhered to the surface of the solid insoluble particles. Processes of obtaining the microcapsules and dispersions of microcapsules in a liquid are claimed. The microcapsules can be used in a variety of applications particularly in the field of thermal energy storage. Suitably the microcapsules can be designed to have a particular density and can be used in the transfer fluids where the density of the microcapsules are the same as the carrier fluid.

L'invention concerne une microcapsule qui comprend un noyau contenant un liquide hydrophobe ou une cire à l'intérieur d'une coque polymère, dans laquelle des particules solides insolubles dans le liquide hydrophobe ou la cire sont distribuées dans tout le noyau, un polymère dispersant soluble dans l'huile adhérant à la surface des particules insolubles solides. Des procédés d'obtention des microcapsules et des dispersions de microcapsules dans un liquide sont revendiqués. Les microcapsules peuvent être utilisées dans une diversité d'applications, en particulier, dans le domaine du stockage d'énergie thermique. De façon appropriée, les microcapsules peuvent être mises au point pour avoir une densité particulière et peuvent être utilisées dans les fluides de transfert où la densité des microcapsules est identique à celle du fluide porteur.

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