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US 12,318,748 B2Granted
Microcapsules for use with polyurethane and epoxy adhesives
AssigneeThe Johns Hopkins University
InventorsChristopher M. Hoffman, Jr., Brian M. Koronkiewicz, Reid E. Messersmith, Mairead E. Bartlett
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Abstract
A microcapsule for use with an underwater adhesive includes a shell including nanoclay platelets and a polyurea product of an interfacial polymerization of a polyamine and an aromatic polyisocyanate. The microcapsule further includes a core composition encapsulated by the shell. The core composition includes a base catalyst for formation of a polyurethane, a polyol, and a hydrophilic solvent.
Claims12
A stabilized microcapsule comprising:
- a shell consisting essentially of:
- nanoclay platelets;
- and
- a polyurea product of an interfacial polymerization of a polyamine and an aromatic polyisocyanate;
- and
- a core composition encapsulated by the shell, wherein the core composition comprises a base catalyst of a polyurethane adhesive or an epoxy adhesive, a polyol, and a hydrophilic solvent.
3 more elements
Dependencies are inferred from the claim text.