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US4775424A
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Disinfecting and cleaning system for contact lenses
Assignee: Henkel AG and Co KGaA
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Filing: 1987-07-30
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Granted: 1988-10-04
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Expires: 2007-07-30
Abstract
Abstract A two component disinfecting and cleaning system for contact lenses comprising a first component containing a peroxo compound and an alkyl glucoside and a second component containing an H 2 O 2 -neutralilzing agent and a buffer salt in an amount sufficient to adjust the pH of an aqueous contact lens solution containing the first and second components to about 7.
Inventors
- 👤 Klaus-Dieter Wisotzki
- 👤 Klaus Bansemir
- 👤 Jochen Jacobs
- 👤 Hans Kruse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:41
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/0005; C11D3/0078; A; A61; A61L; A61L12/00; A61L12/08; A61L12/12; A61L12/124; A61L12/126; C11D1/00; C11D1/66; C11D1/662
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
117 words
In a two component disinfecting and cleaning system for contact lenses which comprises a first component containing a peroxo compound, and a second component containing a H 2 O 2 -neutralizing agent, the improvement wherein the first component contains a solid peroxo compound and an alkyl glucoside wherein the molar ratio of peroxo compound to alkyl glucoside is from about 1×10 2 :1 to about 32×10 4 :1, and wherein the second component contains as the H 2 O 2 -neutralizing agent in a reducing agent and/or a catalyst and at least one buffer salt in amount sufficient to adjust the pH of an aqueous contact lens solution containing the first and second components to about 7.
Claim 2
Dependent Claim
117 words
In a two component disinfecting and cleaning system for contact lenses which comprises a first component containing a peroxo compound, and a second component containing a H 2 O 2 -neutralizing agent, the improvement wherein the first component contains a solid peroxo compound and an alkyl glucoside wherein the molar ratio of peroxo compound to alkyl glucoside is from about 1×10 2 :1 to about 32×10 4 :1, and wherein the second component contains as the H 2 O 2 -neutralizing agent in a reducing agent and/or a catalyst and at least one buffer salt in amount sufficient to adjust the pH of an aqueous contact lens solution containing the first and second components to about 7.
Claim 3
Dependent Claim
15 words
The system of claim 1 wherein the peroxo compound is potassium persulfate or urea peroxohydrate.
Claim 4
Dependent Claim
41 words
The system of claim 1 wherein the alkyl glucoside has the formula R.sub.1 O(C.sub.n H.sub.2n O).sub.y (Z).sub.x wherein R 1 is a C 8 -C 18 alkyl group, n=2 or 3, y=0 to 10, Z is glucose, and x=1 to 10.
Claim 5
Dependent Claim
16 words
The system of claim 3 wherein R 1 is a C 12 -C 14 alkyl group.
Claim 6
Dependent Claim
7 words
The system of claim 3 wherein y=0.
Claim 7
Dependent Claim
9 words
The system of claim 3 wherein x=1 to 5.
Claim 8
Dependent Claim
21 words
The system of claim 3 wherein R 1 is a C 12 -C 14 alkyl group, y=0, and x=1 to 5.
Claim 9
Dependent Claim
16 words
The system of claim 1 wherein the first component also contains a nonionic surfactant compatible therewith.
Claim 10
Dependent Claim
27 words
The system of claim 1 wherein the pH of the solution containing the first component only is in the range of from about 2 to about 7.
Claim 11
Dependent Claim
11 words
The system of claim 9 wherein the pH is about 3.5.
Claim 12
Dependent Claim
19 words
The system of claim 1 wherein the ratio is from about 1×10 3 :1 to about 32×10 3 :1.
Claim 13
Dependent Claim
19 words
The system of claim 11 wherein the ratio is from about 1×10 3 :1 to about 8.3×10 3 :1.
Claim 14
Dependent Claim
15 words
The system claim 1 wherein the reducing agent is ascorbic acid, sodium ascorbate, or glucose.
Claim 15
Dependent Claim
11 words
The system of claim 1 wherein the catalyst is an enzyme.
Claim 16
Dependent Claim
21 words
The system of claim 1 wherein both a reducing agent and a catalyst are present and the catalyst is an enzyme.
Claim 17
Dependent Claim
10 words
The system of claim 14 wherein the enzyme is catalase.
Claim 18
Dependent Claim
16 words
The system of claim 1 wherein the system is in the form of an aqueous solution.
Claim 19
Dependent Claim
28 words
The system of claim 1 wherein the first component is in powder form or tablet form, and the second component is independently in powder form or tablet form.
Claim 20
Dependent Claim
21 words
The system of claim 1 wherein the H 2 O 2 -neutralizing agent is coated with a water soluble film-forming polymer.
Claim 21
Dependent Claim
20 words
The system of claim 19 wherein the water soluble film-forming polymer is a polymer of acrylic acid and/or methacrylic acid.
Claim 22
Dependent Claim
41 words
A method for disinfecting and cleaning a contact lens comprising contacting said contact lens with an acidic aqueous solution of the first component of the system of claim 19 which also contains the second component of the system of claim 19.
Claim 23
Dependent Claim
45 words
A method for disinfecting and cleaning a contact lens comprising contacting said contact lens with an aqueous solution of the first component of the system of claim 1 followed by the addition of the second component thereof to the aqueous solution of the first component.
Claim 24
Dependent Claim
113 words
In a two-component one step disinfecting and cleaning system for contact lenses which comprises a first component containing a peroxo compound and a second component in powder or tablet form containing an H 2 O 2 -neutralizing agent, the improvement wherein the second component is coated with a water soluble film-forming polymer, wherein the H 2 O 2 -neutralizing agent is a reducing agent and/or a catalyst, wherein the second component contains at least one buffer salt in amount sufficient to adjust the pH of an aqueous contact lens solution containing the first and second components to about 7, and wherein the first component contains an alkyl glucoside and a solid peroxo compound.
Claim 25
Dependent Claim
113 words
In a two-component one step disinfecting and cleaning system for contact lenses which comprises a first component containing a peroxo compound and a second component in powder or tablet form containing an H 2 O 2 -neutralizing agent, the improvement wherein the second component is coated with a water soluble film-forming polymer, wherein the H 2 O 2 -neutralizing agent is a reducing agent and/or a catalyst, wherein the second component contains at least one buffer salt in amount sufficient to adjust the pH of an aqueous contact lens solution containing the first and second components to about 7, and wherein the first component contains an alkyl glucoside and a solid peroxo compound.
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