US4046706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contact lens cleaning composition
Assignee: Ciba Vision Corp
•
Filing: 1976-04-06
•
Granted: 1977-09-06
•
Expires: 1996-04-06
Abstract
Abstract A composition for cleaning contact lenses is provided. The composition comprises a poly(oxyethylene)-poly(oxypropylene) block copolymer having a molecular weight between about 1900 and 15,500, a water solubility in excess of about 10 gms per 100 ml, a cloud point in 1% aqueous solutions above about 30 DEG C, and a foam height in excess of 30 mm; a microbial growth inhibitor; ethyl or isopropyl alcohol; an amphoteric surfactant; and water.
Inventors
- 👤 Joseph Zenon Krezanoski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:48
CPC Classifications
A; A61; A61L; A61L12/00; A61L12/08; C; C11; C11D; C11D1/00; C11D1/66; C11D1/722; C11D1/88; C11D1/94; C11D3/00; C11D3/0005; C11D3/0078; C11D1/008; C11D1/90; C11D1/92
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
184 words
An aqueous composition for cleaning contact lenses which comprises: a. about 0.01% to about 40% of a poly (oxyethylene)-poly(oxypropylene) block copolymer having a molecular weight between about 1900 and 15,500, a water solubility in excess of about 10 grams per 100 ml, a cloud point in 1% aqueous solution above about 30° C and a Foam Height in excess of 30 mm; b. about 2% to about 25% ethyl or isopropyl alcohol; and c. about 2% to about 25% of an amphoteric surfactant having the formula ##STR6## in which R is a C 6 to C 24 hydrocarbon radical, selected from straight or branch chain, saturated or unsaturated, aliphatic hydrocarbon or an alkyl-aryl group in which the alkyl group contains at least six carbon atoms; R 1 is H, alkali metal, or CH 2 COOM; R 2 is a C 1 to C 4 alkylene group; Z is ##STR7## M is alkali metal, H or a nitrogen containing organic base; and G is OH, or a radical comprising the acid group of a C 6 to C 24 anionic surface active sulfate or sulfonate.
Claim 2
Dependent Claim
184 words
An aqueous composition for cleaning contact lenses which comprises: a. about 0.01% to about 40% of a poly (oxyethylene)-poly(oxypropylene) block copolymer having a molecular weight between about 1900 and 15,500, a water solubility in excess of about 10 grams per 100 ml, a cloud point in 1% aqueous solution above about 30° C and a Foam Height in excess of 30 mm; b. about 2% to about 25% ethyl or isopropyl alcohol; and c. about 2% to about 25% of an amphoteric surfactant having the formula ##STR6## in which R is a C 6 to C 24 hydrocarbon radical, selected from straight or branch chain, saturated or unsaturated, aliphatic hydrocarbon or an alkyl-aryl group in which the alkyl group contains at least six carbon atoms; R 1 is H, alkali metal, or CH 2 COOM; R 2 is a C 1 to C 4 alkylene group; Z is ##STR7## M is alkali metal, H or a nitrogen containing organic base; and G is OH, or a radical comprising the acid group of a C 6 to C 24 anionic surface active sulfate or sulfonate.
Claim 3
Dependent Claim
39 words
The composition of claim 1 which contains a germicidal composition, in addition to said alcohol, which germicidal composition is compatible with the lenses and present in a sufficient amount to ensure preservation of the sterility of said aqueous composition.
Claim 4
Dependent Claim
31 words
The composition of claim 2 in which the germicidal composition is selected from the group consisting of benzalkorium chloride, thimerosal sodim, sorbic acid, a salt of ethylenediaminetetraacetic acid, and mixtures thereof.
Claim 5
Dependent Claim
18 words
The composition of claim 2 wherein the germicidal composition comprises a mixture of sorbic acid and disodium ethylenediaminetetraacetate.
Claim 6
Dependent Claim
31 words
The composition of claim 4 wherein the concentration of sorbic acid is from about 0.01% to about 0.5% and the concentration of disodium ethylenediaminetetraacetate is from about 0.01% to about 1%.
Claim 7
Dependent Claim
23 words
The composition of claim 4 wherein the concentration of sorbic acid is about 0.25% and the concentration of disodium ethylenediaminetetraacetate is about 0.5%.
Claim 8
Dependent Claim
17 words
The composition of claim 1 which contains about 10% to about 25% of said poly(oxyethylene)-poly(oxypropylene) block copolymer.
Claim 9
Dependent Claim
14 words
The composition of claim 7 which contains about 15% of said poly(oxyethylene)-poly(oxypropylene) block copolymer.
Claim 10
Dependent Claim
16 words
The composition of claim 1 which contains about 5% to about 20% ethyl or isopropyl alcohol.
Claim 11
Dependent Claim
16 words
The composition of claim 1 which contains about 5% to about 15% of said amphoteric surfactant.
Claim 12
Dependent Claim
14 words
The composition of claim 10 in which said amphoteric surfactant has the formula ##STR8##
Claim 13
Dependent Claim
36 words
The composition of claim 1 which additionally contains a sufficient amount of at least one water-soluble salt compatible with ocular tissue to provide a solution salt content equivalent to about 0.5% to about 1.8% sodium chloride.
Claim 14
Dependent Claim
18 words
The composition of claim 12 wherein the water-soluble salt is a mixture of sodium chloride and potassium chloride.
Claim 15
Dependent Claim
23 words
The composition of claim 11 wherein the concentration of sodium chloride is about 0.65% and the concentration of potassium chloride is about 0.20%.
Claim 16
Dependent Claim
183 words
An aqueous composition for cleaning contact lenses which comprises: a. about 10% to about 25% of a poly(oxyethylene)poly(oxypropylene) block copolymer having a molecular weight between about 1900 and 15,500, a water solubility in excess of about 10 grams per 100 ml, a cloud point in 1% aqueous solution above about 30° C and a Foam Height in excess of 30 mm; b. about 5% to about 20% ethyl or isopropyl alcohol; and c. about 5% to about 15% of an amphoteric surfactant having the formula ##STR9## in which R is a C 6 to C 24 hydrocarbon radical, selected from straight or branch chain, saturated or unsaturated, aliphatic hydrocarbon or an alkyl-aryl group in which the alkyl group contains at least six carbon atoms; R 1 is H, alkali metal, or CH 2 COOM; R 2 is a C 1 to C 4 alkylene group; Z is ##STR10## M is alkali metal, H or a nitrogen containing organic base; and G is OH, or a radical comprising the acid group of a C 6 to C 24 anionic surface active sulfate or sulfonate.
Claim 17
Dependent Claim
183 words
An aqueous composition for cleaning contact lenses which comprises: a. about 10% to about 25% of a poly(oxyethylene)poly(oxypropylene) block copolymer having a molecular weight between about 1900 and 15,500, a water solubility in excess of about 10 grams per 100 ml, a cloud point in 1% aqueous solution above about 30° C and a Foam Height in excess of 30 mm; b. about 5% to about 20% ethyl or isopropyl alcohol; and c. about 5% to about 15% of an amphoteric surfactant having the formula ##STR9## in which R is a C 6 to C 24 hydrocarbon radical, selected from straight or branch chain, saturated or unsaturated, aliphatic hydrocarbon or an alkyl-aryl group in which the alkyl group contains at least six carbon atoms; R 1 is H, alkali metal, or CH 2 COOM; R 2 is a C 1 to C 4 alkylene group; Z is ##STR10## M is alkali metal, H or a nitrogen containing organic base; and G is OH, or a radical comprising the acid group of a C 6 to C 24 anionic surface active sulfate or sulfonate.
Claim 18
Dependent Claim
38 words
The composition of claim 15 which contains a germicidal composition, in addition to said alcohol, which germicidal composition is compatible with lenses and present in a sufficient amount to ensure preservation of the sterility of said aqueous composition.
Claim 19
Dependent Claim
27 words
The composition of claim 16 wherein the germicidal composition comprises from about 0.01% to about 0.5% sorbic acid and from about 0.01% to about 1% disodium ethylenediaminetetraacetate.
Claim 20
Dependent Claim
20 words
The composition of claim 17 wherein in the amphoteric sufactant, R is a fatty acid radical and G is OH.
Claim 21
Dependent Claim
14 words
The composition of claim 18 in which said amphoteric surfactant has the formula ##STR11##
References Cited (Backward Citations)
US2773068A
Cited
US2781356A
Cited
US3925241A
Cited
US3882036A
Cited
US3954644A
Cited
US3888782A
Cited
US3884826A
Cited
US3969281A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-05 | 1981-03-07 | 1981-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-05 | 1985-03-07 | 1985-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-05 | 1989-03-07 | 1989-09-06 | $7700.00 | Window Closed / Lapsed |