Encapsulated compositions
AssigneeFritz Industries, Inc.
InventorsSteven B. Laramay, James J. Lavene
Life of this patent
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Abstract
A capsule having a reactive chemical enclosed in the hollow interior thereof, and at least one coating in direct contact with and surrounding the reactive chemical, wherein the coating is a heat-cured thermosetting synthetic resin. The capsule can also include a second coating which is in direct contact with and surrounds the heat-cured thermosetting synthetic resin. The reactive chemical is not reactive with, soluble in or a solvent for the coating, or coatings, which surround the reactive chemical in the hollow interior of the capsule. The coating material is not soluble in water, but is permeable to water.
Claims21
A capsule having a hollow interior,
- said capsule consisting of a water-soluble, particulate reactive chemical enclosed in said hollow interior by a wall which is permeable to water, but which is not water soluble;
- said wall is comprised of a first coating
- wherein
- said first coating is a heat-cured first chemical composition whereby said capsule having said first coating is dry, flowable and not sticky;
- and
- wherein
- said first chemical composition is selected from the group consisting of phenolic, epoxy and melamine thermosetting synthetic resins.
Dependencies are inferred from the claim text.