Antimicrobial polymer, contact lens and contact lens-care articles
US5520910A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Mar 13, 1995 |
| Grant date | May 28, 1996 |
| Priority date | — |
| Expiry date | Mar 13, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/043
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An antimicrobial polymer obtained by homo- or copolymerizing a phosphonium salt type vinyl monomer, such as 2-(methacrylic acid) ethyltri-n-octylphosphonium chloride, and a contact lens and an article for its care mainly comprising an antimicrobial resin obtained by copolymerizing a polymerizable monomer and a phosphonium salt type vinyl monomer are disclosed. The antimicrobial polymer has a broad antimicrobial spectrum and produces a sufficient antimicrobial effect after a short contact time. The contact lens and article for its care are hardly effected by contamination with microorganisms while retaining excellent optical performance and processability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.