Fibrous antimicrobial materials, structures, and barrier applications
US10226047B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2014 |
| Grant date | Mar 12, 2019 |
| Priority date | — |
| Expiry date | Dec 23, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/50
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Fibrous antimicrobial materials for use in structures and barrier applications, such as face masks and wound dressings, have been developed from antimicrobial polymeric materials. The fibrous antimicrobial materials also are particularly suitable for use in air and water filtration. The antimicrobial polymeric materials are prepared from solid solutions of antimicrobial bisguanide compounds blended with certain thermoplastic polymers. The antimicrobial polymeric materials may be extruded into fibers or used in the particulate form for preparation of the nonwoven antimicrobial materials. The antimicrobial bisguanide compound, such as chlorhexidine, are distributed at the molecular level within at least one thermoplastic polymer, such as a polyolefin in which the antimicrobial bisguanide compound is soluble, to form a miscible blend. Methods for their formation and use also are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.