Microcapsules for use with polyurethane and epoxy adhesives
US12318748B2 · kind B2 · utility
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1References
12Claims
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Key dates
| Filing date | Sep 28, 2022 |
| Grant date | Jun 3, 2025 |
| Priority date | — |
| Expiry date | Apr 22, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J2475/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.