Laundry additive particle having multiple surface coatings

• Main Authors: ATHANASIOS SURUTZIDIS, MICHAEL JUDE LEBLANC, BRENT MICHAEL HEIST
• Format: Patent
• Language: English
• Published: 20.10.1998
• Edition: 6
• Subjects: ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES; CANDLES; CHEMISTRY; DETERGENT COMPOSITIONS; DETERGENTS; FATTY ACIDS THEREFROM; METALLURGY; RECOVERY OF GLYCEROL; RESIN SOAPS; SOAP OR SOAP-MAKING; USE OF SINGLE SUBSTANCES AS DETERGENTS

A laundry additive particle having multiple coatings and compositions employing the particle are provided. The laundry additive particle comprises a central core particle with the core particle comprising a porous carrier core material and a glassy encapsulating material intermixed with the carrier material. The glassy encapsulating material is derived from one or more at least partially water-soluble hydroxylic compounds having an anhydrous, nonplasticized, glass transition temperature, Tg, of at least about 0° C. An optional intermediate encapsulating material may be coated on the central core particle. The intermediate encapsulating material may comprise a carbohydrate material having an anhydrous nonplasticized, glass transition temperature, Tg of at least about 130° C. Lastly, an external coating material is coated on the core particle or the intermediate encapsulating material which provides the laundry additive particle with a substantially non-tacky surface. The external coating material is derived from one or more at least partially water soluble or dispersible compounds selected from the group consisting of waxes, water-soluble polymers, fatty compounds, carbohydrates, cellulose and cellulose derivatives, natural and synthetic gums, silicates, borates, phosphates, chitin and chitosan, and mixtures thereof. The laundry additive particle has a hygroscopicity value of less than about 80%. Preferably, a laundry or cleaning agent such as a perfume is supported on or contained in the porous carrier.