초록 ▼

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

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, T.sub.g, of at least about 0.degree. 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, T.sub.g of at least about 130.degree. 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.

대표청구항 ▼

[ What is claimed is:] [1.]1. A laundry additive particle comprising:i) a central core particle, said core particle comprising a porous carrier core material and a glassy encapsulating material intermixed with said carrier material; said glassy encapsulating material derived from one or more at leas

[ What is claimed is:] [1.]1. A laundry additive particle comprising:i) a central core particle, said core particle comprising a porous carrier core material and a glassy encapsulating material intermixed with said carrier material; said glassy encapsulating material derived from one or more at least partially water-soluble hydroxylic compounds having an anhydrous, nonplasticized, glass transition temperature, T.sub.g, of at least 0.degree. C. and said porous carrier core material is selected from the group consisting of amorphous silicates, crystalline nonlayer silicates, layer silicates, calcium carbonates, calcium/sodium carbonate double salts, sodium carbonates, clays, zeolites, sodalites, alkali metal phosphates, macroporous zeolites, chitin microbeads, carboxyalkylcelluloses, carboxyalkylstarches, cyclodextrins, porous starches and mixtures thereof;ii) an intermediate encapsulating material coated on said central core particle, said intermediate encapsulating material comprising a carbohydrate material having an anhydrous, nonplasticized, glass transition temperature, T.sub.g, of at least 130.degree. C.; andiii) an external coating material coated on said intermediate encapsulating material and providing said laundry additive particle with a substantially non-tacky surface; said external coating material being derived from one or more at least partially wash 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;wherein said laundry additive particle has a hygroscopicity value of less than 80%.