Polymeric compositions

Details Polymeric compositions Polymeric compositions

B - Operations, Transporting

01

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B01J 13/22 (2006.01) A61K 9/16 (2006.01) C08F 116/06 (2006.01) C11D 3/386 (2006.01)

Patent

CA 2102126

A particulate composition comprises particles having a substantially anhydrous core comprising a matrix polymer contain- ing active ingredient, a layer of hydrophobic oil around the core and a shell of polymer around the oil layer, wherein the solid ma- trix polymer is sufficiently hydrophobic that it will partition preferentially into the oil rather than into water. The composition can be a powder or a stable liquid dispersion. The active ingredient is preferably a detergent enzyme and the composition can there- fore be a stable liquid laundry detergent. The composition can be made by providing an aqueous solution of encapsulating po- lymer, providing a substantially anhydrous dispersion in oil of particles of a matrix polymer containing active ingredient, dispers- ing this dispersion into the aqueous solution and causing a solid polymer shell to form around the droplets of the matrix particles.

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