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US 5,858,959 AGranted
Delivery systems comprising zeolites and a starch hydrolysate glass
AssigneeThe Procter & Gamble Company
InventorsAthanasios Surutzidis, Michael Jude LeBlanc
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Abstract
Glassy particles containing agents useful for laundry and cleaning products (preferably perfumes, bleaching agents, soil release polymers), and laundry and cleaning products containing these glassy particles. The particles comprise a glass derived from one or more at least partially water-soluble hydroxylic compounds, such as hydrogenated starch hydrolysates, sucrose, glucose, and starch hydrolysates. The glassy particle also has a hygroscopicity value of less than about 80%.
Claims4
A laundry or cleaning composition comprising:
- (A) from 0.1% to 10%, by weight of the composition, of a glassy particle and
- (B) from 0.1% to 90%, by weight of the composition, of one or more nonsoap detergent active materials;
- wherein said glassy particle has mean particle size of from 1 to 500 microns and comprises a perfume adsorbed on a zeolite and covered in a starch hydrolysate glass, said glass having a Tg in the range from 50.degree. C. to 200.degree. C.;
- wherein the composition of said glassy particle, expressed in parts by weight of the ingredients as a percentage of the total glassy particle, is as follows:
- (a) from 2% to 40% by weight of said perfume;
- (b) from 2% to 95% of said zeolite, said zeolite having surface area of 50 m.sup.2 /g or higher;
- (c) from 12% to 96% of said starch hydrolysate having melting-point in the range from 30.degree. C. to 300.degree. C.;
- and
- (d) from 0.05% to 35% of water or plasticizer.
6 more elements
Dependencies are inferred from the claim text.