Particulate compositions comprising active ingredient in...

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A - Human Necessities

01

N

167/166, 195/33,

A01N 25/10 (2006.01) A01N 25/28 (2006.01) A01N 33/18 (2006.01) A01N 43/90 (2006.01) A01N 47/30 (2006.01) A01N 57/16 (2006.01) A61K 9/16 (2006.01) A61K 9/50 (2006.01) A61K 47/34 (2006.01) B01J 13/10 (2006.01) B01J 13/12 (2006.01) C11D 3/37 (2006.01) C11D 3/386 (2006.01) C12N 11/04 (2006.01)

Patent

CA 1339347

Polymeric Compositions and Methods of Producing Them Release of an active ingredient can be controlled, and the active ingredient can be protected from the environment during storage, by distributing it throughout a matrix containing a relatively large amount of polymeric material that is soluble or swellable in aqueous alkali but less soluble or swellable at a lower pH value and which is in the form of a dried oil-in-water emulsion of the polymer or a relatively insoluble partial salt of the polymer with a volatile amine, the full salt of the polymer being relatively soluble. The composition is of particular value for the protection of detergent enzymes

609284

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