Compositions comprising polyquaterniums in combination with polymeric biguanides for disinfecting contact lenses
US6153568A · kind A · utility
55Cited by
11References
23Claims
0Family size
Inventors
Key dates
| Filing date | Nov 12, 1998 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | Nov 12, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/3723
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention is directed to an ophthalmically safe disinfecting solution for contact lenses comprising the combination of a polymeric biguanide and a polyquaternium polymer of a substituted or unsubstituted vinylimidazole or its vinylimidazoliuum salt, which copolymer has a weight average molecular weight of 5,000 to 5,000,000. The invention is also directed to an improved method of disinfecting a contact lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.