Perfume delivery system comprising zeolites
AssigneeThe Procter & Gamble Company
InventorsRobert Ya-Lin Pan, Jing-Feng You, Gregory Stephen Caravajal, Sharon Anne Graves, William Richard Mueller
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Abstract
Granular detergent compositions comprise conventional ingredients and a perfume delivery system which comprises Type X or Type Y Zeolites having a perfume releasably adsorbed within their pores, and a barrier matrix comprising a fluid polyol or diol which is insoluble with the perfume and a solid polyol containing more than three hydroxyl moieties. Methods of depositing said perfume onto fabric surfaces are disclosed.
Claims12
A perfume delivery composition in the form of particles comprising:
- a) a solid, water-insoluble, porous carrier which comprises a natural or synthetic zeolite having a nominal pore size of at least about 6 Angstroms;
- b) a perfume which is releasably incorporated in the pores of said zeolite carrier to provide a perfumed zeolite;
- and
- c) a matrix coated on said perfume zeolite which comprises a water-soluble composition in which the perfume is substantially insoluble, comprising from about 30% to about 50%, by weight, of at least one solid polyol containing more than 3 hydroxyl moieties and from about 50% to about 70% , by weight, of a fluid diol or polyol in which the perfume is substantially insoluble and in which the solid polyol is substantially soluble.
A perfume delivery composition derived by a process which comprises the steps of:
- (a) forming a perfumed zeolite by mixing porous, substantially dehydrated Zeolite X or Y with a perfume such that the perfume is incorporated into the pores of the zeolite;
- (b) forming a matrix by mixing a solid polyol containing more than 3 hydroxyl moieties with glycerol, ethylene glycol, or diglycerol to form a liquid;
- and
- (c) mixing the matrix (b) with the perfumed zeolite (a) until free flowing particles are formed.
Dependencies are inferred from the claim text.