US4046706A — Contact lens cleaning composition

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##

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

Contact lens cleaning composition

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