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US 4,758,595 AGranted
Disinfecting and preserving systems and methods of use
AssigneeBausch & Lomb Incorporated
InventorsLai Ogunbiyi, Francis X. Smith, Thomas M. Riedhammer
Life of this patent
Estimating the term…
Abstract
A preserving solution comprising a microbicidally or fungicidally effective amount of a biguanide or water-soluble salt thereof, in combination with a buffer system, said biguanide having the formula: ##STR1## wherein n is from 1 to 500, said biguanide being present in an amount from 0.000001 to 0.0003 weight percent, useful for preserving, for example, a cosmetic formulation.
Claims18
A solution comprising a microbicidally or fungicidally effective amount of a biguanide or water-soluble salt thereof, in combination with a borate buffer system, said biguanide having the formula:
- ##STR10## wherein n is from 1 to 500, said biguanide being present in an amount from 0.000001 to 0.0003 weight percent.
Dependencies are inferred from the claim text.