Polyurethane based medical articles
US12102736B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2022 |
| Grant date | Oct 1, 2024 |
| Priority date | — |
| Expiry date | Apr 27, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2150/00
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Medical articles formed from a polyurethane-based resin including an ionically-charged modifier provide enhanced properties. The polyurethane-based resin is a reaction product of ingredients comprising: a diisocyanate; a diol chain extender; a polyglycol; and an ionically-charged modifier incorporated into a backbone, as a side chain, or both of the polyurethane-based resin. Embodiments include the ionically-charged modifier is a combination of anionic and cationic modifiers. Embodiments include the ionically-charged modifier is zwitterionic. Medical articles herein either have inherent antimicrobial and/or anti-fouling characteristics or can easily bond ionic active agents to provide desirable material properties, including antimicrobial, anti-fouling, and/or radiopacity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.