Compositions – Oxidative bleachant – oxidant containing – or generative – Composition containing a stabilizer or a product in the form...
Patent
1988-06-06
1990-04-24
Hunt, Brooks H.
Compositions
Oxidative bleachant, oxidant containing, or generative
Composition containing a stabilizer or a product in the form...
25218627, 2521863, 25218631, 25218634, 25218635, 25218636, 25218637, 25217413, 4272133, 42721336, 427220, 427221, 4284022, 42840222, 42840224, B01J 1302, C07D25100, B32B 2714, C01B 1500
Patent
active
049198416
ABSTRACT:
A process is provided for preparing encapsulated active particles by the steps of: dispersing active materials in molten wax; emulsifying the active/wax dispersion in aqueous surfactant solution for no longer than 4 minutes; quenching the capsules by cooling; and retrieving solidified capsules. The active materials may be selected from chlorine or oxygen bleaching agents, bleach precursors, enzymes, perfumes, fabric softening agents, and surfactants. Optimal capsules are obtainable where a blend of hard and soft waxes are utilized for the coating. The hard and soft waxes are characterized by needle penetration values no higher than 30 mm and no lower than 35 mm, respectively, at 25.degree. C. The resultant capsules have utility for cleaning compositions such as automatic dishwashing detergent formulations.
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"Chemical Technology", Oct. 1974, pp. 623-626 by Goodwin and Somerville entitled Microencapsulation by Physical Methods.
Hurckes Lisa C.
Kamel Ahmed
Morelli Monica M.
Caress Virginia B.
Honig Milton L.
Hunt Brooks H.
Lever Brothers Company
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