Polyurea copolymer coating compositions and methods
US11781035B2 · kind B2 · utility
1Cited by
25References
26Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 11, 2018 |
| Grant date | Oct 10, 2023 |
| Priority date | — |
| Expiry date | Apr 20, 2040 |
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.