Perfume microcapsules and related film and detergent compositions
AssigneesMonosol, LLC, Givaudan SA
InventorsDavid M. LEE, Yashodhan S. PARULEKAR, Jonathon KNIGHT, Stephanie KOLB
Life of this patent
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Abstract
Perfume microcapsule-containing films, related solutions, and containers including the films (e.g. detergent packets) are disclosed, together with their methods of preparation and use.
Claims34
A film having an average thickness in a range of about 5 μm to about 200 μm, the thickness comprising a mixture of a water-soluble polymer, one or more plasticizers, and a plurality of perfume fragrance-containing aminoplast resin microcapsules comprising a median (d50) particle size of at least about 12 μm and a shell comprising 75 to 100% by weight of an aminoplast resin that comprises 50 to 90% by weight of a terpolymer and 10-50% by weight of a polymeric stabilizer, wherein the terpolymer comprises:
- (a) 20 to 40% by weight of moieties derived from at least one triamine,
- (b) 25 to 60% by weight of moieties derived from at least one diamine, optionally urea;
- and
- (c) 19-35% by weight of moieties selected from the group consisting of alkylene and alkylenoxy moieties having 1 to 6 methylene units.
A method of making a perfume-containing water-soluble film, comprising:
- forming a mixed aqueous solution comprising a polymer resin and a plasticizer, optionally with heating;
- degassing the mixture;
- adding perfume-containing microcapsules to the degassed solution to form a suspension;
- mixing the suspension;
- casting the suspension onto a surface;
- and allowing the suspension to substantially dry.
-36. (canceled)
Dependencies are inferred from the claim text.