Patent EP0063472A2 successfully refreshed from Google Patents.
EP0063472A2
Expired / Lapsed
EP
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Cleansing composition for optical surfaces and method of cleansing a contact lens
Assignee: Alcon Vision LLC
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Filing: 1982-04-15
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Granted: —
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Expires: 2002-04-15
Abstract
Abstract Soft and hard contact lenses are freed from deposits by cleansing them with a particulate organic polymer suspended in a carrier, the polymer having a particular size in the range from one micron to 600 microns and a Rockwell hardness in the range of from R120 to M68, or a shore hardness in the range from A15 to D100.
Inventors
- 👤 Kai Chiang Su
- 👤 Leslie Frank Stebbins
- 👤 Rajkumar Pahlajrai Bhatia
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 22:07
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/0005; C11D3/0078; C11D17/00; C11D17/0008; C11D17/0013; C11D3/16; C11D3/37
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
77 words
A cleansing composition for cleaning optical surfaces comprising, a particulate polymer which is an organic polymer, polysiloxane polymer or a mixture thereof wherein the polymer has a particle size in the range of from one micron to six hundred microns and a Rockwell hardness in the range of from R120 to M68, or a Shore hardness in the range from A15 to D100, and a carrier having a viscosity sufficient to keep the particulate polymer in suspension.
Claim 2
Dependent Claim
77 words
A cleansing composition for cleaning optical surfaces comprising, a particulate polymer which is an organic polymer, polysiloxane polymer or a mixture thereof wherein the polymer has a particle size in the range of from one micron to six hundred microns and a Rockwell hardness in the range of from R120 to M68, or a Shore hardness in the range from A15 to D100, and a carrier having a viscosity sufficient to keep the particulate polymer in suspension.
Claim 3
Dependent Claim
16 words
A cleansing composition as claimed in Claim 1 wherein the carrier is compatible with ocular tissue.
Claim 4
Dependent Claim
31 words
A cleansing composition as claimed in Claim 1 or Claim 2 wherein the carrier comprises water and a thickener wherein the thickener is polyethylene glycol, Carbopol, cellulose, or a mixture thereof.
Claim 5
Dependent Claim
26 words
A cleansing composition as claimed in any one of the preceding claims wherein particulate polymer has a Rockwell hardness in the range from R120 to M68.
Claim 6
Dependent Claim
27 words
A cleansing composition as claimed in any one of the preceding claims wherein the particulate polymer has a Shore hardness in the range from A15 to D100.
Claim 7
Dependent Claim
59 words
A cleansing composition as claimed in any one of the preceding claims the particulate polymer is cellulose-acetate-butyrate, polyethylene, acrylonitrile- butadiene-styrene, acetal, polymethylmethacrylate, methylmethacrylate/styrene copolymer, ethyl cellulose, cellulose acetate, cellulose acetate butyrate polychloro- trifluoroethylene, modified poryethylene-tetrafluorosethylene, Nylon 6, Nylon 6J6, Nylon 11, Nylon 12, polybutadiene, polyarylether, polycarbonate, PBT polyester, polypropylene, polysulfone, polytetraflourethylene, Ionomer, fluoroethylene polymer, silicone or a mixture thereof.
Claim 8
Dependent Claim
29 words
A cleansing composition as claimed in any one of the preceding claims wherein the organic polymer or polysiloxane forms from 1 to 25 percent by weight of the suspension.
Claim 9
Dependent Claim
25 words
A cleansing composition as claimed in any one of the preceding claims which has a viscosity in the range of from 150 to 1500 cps.
Claim 10
Independent Claim
25 words
A method of cleansing a contact lens comprising rubbing the contact lens with a cleansing composition as claimed in any one of the preceding claims.
References Cited (Backward Citations)
No citation records indexed.
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