摘要 |
A process is provided for preparing encpasulated active particles by the steps of: dispersing active in molten wax; emulsifying the active/wax dispersion in aqueous surfactant solution; 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 using a blend of hard and soft waxes. The capsules are useful in cleaning compositions such as automatic dishwashing detergent formulations. |
申请人 |
UNILEVER N.V., ROTTERDAM, NL |
发明人 |
HURCKES, LISA C., SHORT HILLS NEW JERSEY 07078, US;KAMEL, AHMED ABDEL MONEIM, VALLEY COTTAGE NEW YORK 10989, US;MORELLI, MONICA A., NORTH ARLINGTON NEW JERSEY 07032, US |