Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Biocides; animal or insect repellents or attractants
Patent
1995-01-17
1998-04-28
Levy, Neil S.
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Biocides; animal or insect repellents or attractants
424409, 424438, 424485, 424487, 424489, 424497, 424501, 424 946, 5147726, 42840224, 428407, 264 41, 25217412, 42721331, 42721336, A01N 2510, A61K 916
Patent
active
057441529
ABSTRACT:
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 and swellable in aqueous alkali but less soluble and 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.
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Langley John
Symes Kenneth Charles
Allied Colloids Limited
Levy Neil S.
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