Patent US4048122A successfully refreshed from Google Patents.
US4048122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning agents for contact lenses
Assignee: Barnes Hind Pharmaceuticals Inc
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Filing: 1976-01-23
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Granted: 1977-09-13
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Expires: 1996-01-23
Abstract
Abstract Compositions are provided for the effective cleaning of soft and silicone contact lenses by soaking the lenses for a time sufficient to remove adherent residues in a solution containing an epoxy modified silicone surfactant and a fatty acid amide (or nitrogen analog thereof) surfactant, which may be cationic or non-ionic. Other additives may also be included such as thickening agents, bactericides, salts, anionic surfactants, and the like. The compositions are found to be particularly effective in removing strongly adhering proteinaceous matter, as well as lipids and polysaccharides.
Inventors
- 👤 Murray J. Sibley
- 👤 Gordon H. K. Yung
- 👤 Petronio D. Urrea
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:46
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3703; C11D3/373; C11D3/3738; C08; C08K; C08K5/00; C08K5/0008; C08K5/0058; C08K5/16; C08K5/20; C08L; C08L1/00; C08L83/00; C08L83/10; C08L83/12; C11D1/00; C11D1/38; C11D1/52; C11D1/523; C11D1/88; C11D1/94; C11D3/0005; C11D3/0078
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
176 words
An aqueous composition for the cleaning of soft and silicone contact lenses which comprises: a. a water soluble polyalkyleneoxy modified dimethysilicone resin in an amount of about 0.5 to 2 weight percent b. at least one fatty acid amide or nitrogen analog thereof of the formula ##STR5## wherein: R is an aliphatic group of from 9 to 13 carbon atoms having a total unsaturation of from 0 to 1 site of olefinic unsaturation; X is oxygen or nitrogen; m is 0 when X is oxygen and 1 when X is nitrogen, wherein the nitrogen to which Y and Z are bonded is positive; when m is O, Y and Z are hydroxyethyl; and when m is 1, Y is caboxymethyl and Z is 2'-(carboxymethoxy)ethyl-1; with the proviso that the carboxy group may be present as the acid or its physiologically acceptable salt; and wherein the total amount of fatty acid amide and nitrogen analog thereof present is in the range of about 0.25 to 2.5 weight percent, and wherein the remainder of the composition is water.
Claim 2
Dependent Claim
176 words
An aqueous composition for the cleaning of soft and silicone contact lenses which comprises: a. a water soluble polyalkyleneoxy modified dimethysilicone resin in an amount of about 0.5 to 2 weight percent b. at least one fatty acid amide or nitrogen analog thereof of the formula ##STR5## wherein: R is an aliphatic group of from 9 to 13 carbon atoms having a total unsaturation of from 0 to 1 site of olefinic unsaturation; X is oxygen or nitrogen; m is 0 when X is oxygen and 1 when X is nitrogen, wherein the nitrogen to which Y and Z are bonded is positive; when m is O, Y and Z are hydroxyethyl; and when m is 1, Y is caboxymethyl and Z is 2'-(carboxymethoxy)ethyl-1; with the proviso that the carboxy group may be present as the acid or its physiologically acceptable salt; and wherein the total amount of fatty acid amide and nitrogen analog thereof present is in the range of about 0.25 to 2.5 weight percent, and wherein the remainder of the composition is water.
Claim 3
Dependent Claim
19 words
An aqueous composition according to claim 1, having from 0.1 to 0.5 weight percent of a cellulosic thickening agent.
Claim 4
Dependent Claim
33 words
An aqueous composition according to claim 1, having a mixture of a fatty acid amide and the nitrogen analog thereof according to said formula, wherein m is equal to 0 to 1 respectively.
Claim 5
Dependent Claim
40 words
An aqueous composition according to claim 1, wherein a portion of said fatty acid amide where m is 0 is replaced with a fatty acid salt of diethanolamine, wherein said fatty acid is of from 16 to 18 carbon atoms.
Claim 6
Dependent Claim
131 words
An aqueous composition according to claim 1, wherein said water soluble polyalkyleneoxy modified dimethysilicone resin is of the formula TSi(O(SiMe.sub.2 O).sub.x (C.sub.n H.sub.2n O).sub.y T.sup.1).sub.3 wherein: each of the chains may be the same or different, the values for x and y being the average over the entire composition; x is a number in the range of 3 to 10; y is a number in the range of 20 to 50; n is an integer of from 2 to 3; the number ratio of groups wherein n is 2 in relation to the total of x plus the number of groups where n is 3 being at least 0.5:1; T is alkyl of from 1 to 3 carbon atoms; and T 1 is alkyl of from 1 to 6 carbon atoms.
Claim 7
Dependent Claim
53 words
An aqueous composition at a pH of about 7 to 9 for the cleaning of soft and silicone contact lenses which comprises: a. a water soluble polyalkyleneoxy modified dimethysilicone resin in an amount of from about 0.5 to 2 weight percent having the formula: TSi(O(SiMe.sub.2 O).sub.x.spsb.1 (C.sub.2 H.sub.4 O).sub.a (C.sub.3 H.sub.6 O).sub.b T.sup.1).sub.3
Claim 8
Dependent Claim
53 words
An aqueous composition at a pH of about 7 to 9 for the cleaning of soft and silicone contact lenses which comprises: a. a water soluble polyalkyleneoxy modified dimethysilicone resin in an amount of from about 0.5 to 2 weight percent having the formula: TSi(O(SiMe.sub.2 O).sub.x.spsb.1 (C.sub.2 H.sub.4 O).sub.a (C.sub.3 H.sub.6 O).sub.b T.sup.1).sub.3
Claim 9
Dependent Claim
121 words
wherein: each of the chains may be the same or different, the values given for x 1 , and a and b being the average over the entire composition; x 1 is a number in the range of 4 to 8; a is a number in the range of 15 to 30, b is a number in the range of 10 to 20; wherein the ratio of a:x 1 + b is at least 0.5:1 T is alkyl of from 1 to 3 carbon atoms; and T 1 is alkyl of from 1 to 6 carbon atoms b. a mixture of fatty acid amides and the nitrogen analogs thereof in from 0.25 to 2.5 weight percent and of the formula: ##STR6##
Claim 10
Dependent Claim
121 words
wherein: each of the chains may be the same or different, the values given for x 1 , and a and b being the average over the entire composition; x 1 is a number in the range of 4 to 8; a is a number in the range of 15 to 30, b is a number in the range of 10 to 20; wherein the ratio of a:x 1 + b is at least 0.5:1 T is alkyl of from 1 to 3 carbon atoms; and T 1 is alkyl of from 1 to 6 carbon atoms b. a mixture of fatty acid amides and the nitrogen analogs thereof in from 0.25 to 2.5 weight percent and of the formula: ##STR6##
Claim 11
Dependent Claim
31 words
wherein: R 1 is an aliphatic group of from 9 to 13 carbon atoms and 0 to 1 site of ethylenic usaturation; Y 1 and Z 1 are hydroxyethyl and, ##STR7##
Claim 12
Dependent Claim
31 words
wherein: R 1 is an aliphatic group of from 9 to 13 carbon atoms and 0 to 1 site of ethylenic usaturation; Y 1 and Z 1 are hydroxyethyl and, ##STR7##
Claim 13
Dependent Claim
45 words
wherein: R" is an aliphatic group of from 9 to 13 carbon atoms and 0 to 1 site of ethylenic unsaturation; Y" is carboxymethyl and Z" is 2'-(carboxymethoxy)ethyl-1 and may be present as their physiologically acceptable salts, and the remainder of said composition is water.
Claim 14
Dependent Claim
45 words
wherein: R" is an aliphatic group of from 9 to 13 carbon atoms and 0 to 1 site of ethylenic unsaturation; Y" is carboxymethyl and Z" is 2'-(carboxymethoxy)ethyl-1 and may be present as their physiologically acceptable salts, and the remainder of said composition is water.
Claim 15
Dependent Claim
19 words
An aqueous composition according to claim 6 having from 0.1 to 0.5 weight percent of a cellulosic thickening agent.
Claim 16
Dependent Claim
89 words
An aqueous composition according to claim 7, wherein: said polyalkyleneoxy modified dimethylsilicone resin is present in from about 0.5 to 2 weight percent; T is methyl and T 1 is butyl; the ratio of a:x 1 + b is in the range of 0.5-2:1; R 1 and R" are of 11 carbon atoms the fatty acid amine of formula (i) is present in from about 0.05 to 1 weight percent and the fatty acid amide nitrogen analog of formula (ii) is present in from 0.25 to 1.5 weight percent.
Claim 17
Dependent Claim
28 words
An aqueous composition according to claim 8, wherein from about 20 to 33 mole % of said fatty acid amide of formula (i) is replaced with diethanolamine oleate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |