Polyurethane based medical articles
US12370291B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2022 |
| Grant date | Jul 29, 2025 |
| Priority date | — |
| Expiry date | Dec 6, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2300/42
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
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 anionic modifier incorporated into a backbone, as a side chain, or both of the polyurethane-based resin. Exemplary anionic modifier includes 2,2-bis(hydroxymethyl)butyric acid (BHMBA) and/or bis-1,4-((2-hydroxypropoxy)-2-propoxy)-butane sulfonate sodium salt (SULFADIOL®-7Q). Medical articles herein either have inherent antimicrobial and/or anti-fouling characteristics or can easily bond cationic 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.