Compositions – Compositions containing a single chemical reactant or plural... – Organic reactant
Patent
1979-05-10
1982-10-26
Willis, Jr., P. E.
Compositions
Compositions containing a single chemical reactant or plural...
Organic reactant
252173, 25217417, 25217422, 252546, 252DIG14, C11D 1825, C11D 348
Patent
active
043561004
ABSTRACT:
An aqueous composition for cleaning rinsing and cold disinfecting of soft contact lenses during non-wearing periods is provided. The composition comprises a polyoxyethylene-polyoxypropylene block copolymer having a molecular weight between about 1,100 and 14,000, a water solubility in excess of about 10 grams per 100 milliliters, a cloud point in 1% aqueous solution above about 32.degree. C. and a foam height in excess of 30 millimeters; a physiologically acceptable nonionic surface acting agent having a water solubility in excess of one gram per 100 milliliters, a cloud point in 1% aqueous solution of from about 65.degree. C. to about 100.degree. C. and a foam height in excess of 25 millimeters; a humectant, preservative, antimicrobial and fungal growth inhibitor composition which is physiologically compatible and compatible with soft and semi-hard contact lenses which includes ascorbic acid in a concentration of from about 0.1 percent to about 10.0 percent of the total aqueous composition.
REFERENCES:
patent: 3329607 (1967-07-01), Colobert et al.
patent: 3911107 (1978-10-01), Krezanoski
patent: 3987163 (1976-10-01), Rankin
patent: 4013576 (1977-03-01), Loshaek
patent: 4046706 (1977-09-01), Krezanoski
patent: 4104187 (1978-08-01), Sibley et al.
patent: 4126587 (1978-11-01), Sibley et al.
patent: 4127423 (1978-11-01), Rankin
patent: 4199469 (1980-04-01), Walzer
Sherman Laboratories, Inc.
Willis, Jr. P. E.
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