Aqueous microcapsule slurry
AssigneesEncapsys, LLC, Ips Structural Adhesives, Inc., IPS Corporation, Watertite Products, Inc., Weld-On Adhesives, Inc., Ips Adhesives LLC
InventorTodd Arlin Schwantes
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Abstract
An aqueous slurry composition containing microcapsules dispersed in an aqueous medium. The microcapsules contain an ionic acrylate copolymer shell encapsulating an oily medium. Upon drying, the microcapsules release the oily medium. The slurry is useful in delivering a variety of water-insoluble substances via an aqueous medium including cosmetic or agricultural agents.
Claims13
An aqueous slurry composition, comprising an aqueous medium having dispersed therein oily medium-containing microcapsules, wherein the oily medium-containing microcapsules comprise an ionic acrylate copolymer shell encapsulating said oily medium, wherein said ionic acrylate copolymer is made from only water-soluble monomers, said microcapsules release the oily medium upon removal of the aqueous medium without need for pressure to rupture the microcapsules,
- wherein said ionic acrylate copolymer comprises a mono-functional acrylate monomer having an ionic group and a multi-functional acrylate monomer, and
- wherein the mono-functional acrylate monomer comprises an ester moiety, the ester moiety comprises 1 to 6 carbon atoms, the ionic group comprises an ionic substituent on one of the carbon atoms of the ester moiety, and the ionic group is a carboxylic, a sulfonic, or an ammonium group.
Dependencies are inferred from the claim text.