Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Patent
1990-12-06
1992-05-12
Stoll, Robert L.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
264 41, 512 2, 512 4, 424492, 252 86, 252 90, 25217411, B01J 1306, C11D 1700, A61K 746
Patent
active
051126885
ABSTRACT:
Microcapsules which are prepared using coacervation processes and/or which have a complex structure in which there is a large central core of encapsulated material, preferably perfume, and the walls contain small wall inclusion particles of either the core material or some other material that can be activated to disrupt the wall are disclosed. The microcapsules that are prepared by coacervation and contain perfume are especially desirable for inclusion in fabric softener compositions that have a pH of about 7 or less and which contain cationic fabric softener. The encapsulated perfume preferably does not contain large amounts of relatively water-soluble ingredients. Such ingredients are added separately to the fabric softener compositions. Ingredients that have high and low volatilities as compared to, e.g., the desired perfume, can either be added to, or removed from, the perfume to achieve the desired volatility.
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Aylor Robert B.
Covert John M.
Stoll Robert L.
The Procter & Gamble & Company
Witte Richard C.
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