Hydrophilic polymer blends used for dry cow therapy
US6440442B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2000 |
| Grant date | Aug 27, 2002 |
| Priority date | — |
| Expiry date | Nov 6, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/7015
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention provides a mammalian teat dip composition capable of being used during a mammal's dry period comprising a solution of a film-forming polymer blend comprising a first polymer component which is an organic, solvent-soluble, preformed, thermoplastic polyurethane having no reactive isocyanate groups and a second polymer component which is a hydrophilic poly(N-vinyl lactam), said blend capable of withstanding exposure to water without significant loss of said hydrophilic poly(N-vinyl lactam) in an amount sufficient to form a water-resistant film upon topical application to mammalian skin; and wherein said blend comprises from about 10 to about 80 weight percent of said first polymer in combination with said solvent and from about 1 to about 20 weight percent of said second polymer; and at least one antimicrobial agent in an amount sufficient to treat and protect mammalian skin from infection; wherein said composition is capable of being removed by peeling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.