US 12,318,748 B2
Microcapsules for use with polyurethane and epoxy adhesives
Christopher M. Hoffman, Jr., Odenton, MD (US); Brian M. Koronkiewicz, Pasadena, MD (US); Reid E. Messersmith, Severna Park, MD (US); and Mairead E. Bartlett, Takoma Park, MD (US)
Assigned to The Johns Hopkins University, Baltimore, MD (US)
Filed by The Johns Hopkins University, Baltimore, MD (US)
Filed on Sep. 28, 2022, as Appl. No. 17/954,744.
Claims priority of provisional application 63/249,720, filed on Sep. 29, 2021.
Prior Publication US 2023/0097635 A1, Mar. 30, 2023
Int. Cl. B01J 13/16 (2006.01); B32B 15/04 (2006.01); B32B 15/18 (2006.01); B32B 37/12 (2006.01); C09J 5/00 (2006.01); C09J 175/04 (2006.01)
CPC B01J 13/16 (2013.01) [B32B 15/043 (2013.01); B32B 15/18 (2013.01); B32B 37/1284 (2013.01); C09J 5/00 (2013.01); C09J 175/04 (2013.01); B32B 2255/06 (2013.01); B32B 2255/26 (2013.01); B32B 2305/54 (2013.01); B32B 2311/30 (2013.01); C09J 2475/00 (2013.01)] 12 Claims
OG exemplary drawing
 
1. 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.