Use of borate-polyol complexes in ophthalmic compositions
First Claim
1. An aqueous ophthalmic composition comprising between about 0.5 and about 6.0 wt% of a water-soluble borate-polyol complex.
1 Assignment
0 Petitions
Accused Products
Abstract
Water-soluble borate-polyol complexes are useful as buffers and/or antimicrobials in aqueous ophthalmic compositions, including those containing polyvinyl alcohol. These compositions have greater antimicrobial activity than comparable compositions containing typical borate buffers and unexpectedly increase the antimicrobial efficacy of other antimicrobial agents when used in combination. In addition, use of the borate-polyol complexes avoids the incompatibility problem typically associated with the combination of borate buffer and polyvinyl alcohol; therefore, the compositions disclosed herein may also contain polyvinyl alcohol.
7 Citations
24 Claims
- 1. An aqueous ophthalmic composition comprising between about 0.5 and about 6.0 wt% of a water-soluble borate-polyol complex.
-
14. A method of preparing an aqueous ophthalmic composition, comprising the steps of preparing a water-soluble borate-polyol complex by mixing borate and a polyol together in an aqueous solvent and adding polyvinyl alcohol thereto.
-
23. A method for buffering an aqueous ophthalmic composition by adding a water-soluble borate-polyol complex to the composition.
-
24. A method for imparting antimicrobial activity to an ophthalmic composition by adding a water-soluble borate-polyol complex to the composition.
Specification