Polyurea copolymer coating compositions and methods
US12269963B2 · kind B2 · utility
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27References
16Claims
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Key dates
| Filing date | Aug 24, 2023 |
| Grant date | Apr 8, 2025 |
| Priority date | — |
| Expiry date | Aug 24, 2043 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/375
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Durable polyurea copolymer coatings can be applied to surfaces that come in contact with fluids, such as biological fluids, thereby passivating the surface. Polyurea copolymer coating compositions comprise a reaction product of (a) a diamine composition that includes a polyethylene glycol diamine, and optionally, a dipiperidyl alkane; and (b) a diisocyanate. Solutions containing polyurea copolymers, coated surfaces and methods are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.