Polyurethane-polyvinylpyrrolidone block copolymer and iodine carrier therefrom
US5302385A · kind A · utility
39Cited by
9References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1990 |
| Grant date | Apr 12, 1994 |
| Priority date | — |
| Expiry date | Aug 20, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2300/404
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A copolymer having free hydroxyl groups is formed from N-vinyl pyrrolidone and allyl alcohol. A polyurethane is formed from a reaction mixture which includes the copolymer, a diisocyanate, a chain extender and a polyglycol. The polyurethane takes up iodine to give a complex useful as an antimicrobial coating on a medical article or as an antimicrobial foam sponge or wound dressing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.