US4581184A
Expired / Lapsed
US
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Oxygen permeable lens
Assignee: Novartis AG
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Filing: 1984-01-16
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Granted: 1986-04-08
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Expires: 2004-01-16
Abstract
Abstract Hard, wettable, gas-permeable, optically acceptable mechanically stable vision correction lenses can be made from a substantially hydrophobic polymeric matrix having randomly polymerized throughout the matrix residues derived from a hydrolyzable silicone-containing ethylenically unsaturated monomer.
Inventors
- 👤 James C. Powell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:05
CPC Classifications
G; G02; G02B; G02B1/00; G02B1/04; G02B1/041; G02B1/043
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
88 words
An optically clear, hard, mechanically stable, gas permeable, wettable vision correction lens which comprises a polymeric matrix having randomly polymerized in the matrix, residues derived from an ethylenically unsaturated silicone containing monomer, having a hydrolyzable silicone group of the formula: ##STR9## wherein R is a hydrogen or a C 1-5 alkyl and A is a silicone group wherein a silicone of same is directly attached to the ester oxygen, in an amount sufficient to provide gas permeability to the matrix and wettabillity to the lens surface when hydrated.
Claim 2
Dependent Claim
88 words
An optically clear, hard, mechanically stable, gas permeable, wettable vision correction lens which comprises a polymeric matrix having randomly polymerized in the matrix, residues derived from an ethylenically unsaturated silicone containing monomer, having a hydrolyzable silicone group of the formula: ##STR9## wherein R is a hydrogen or a C 1-5 alkyl and A is a silicone group wherein a silicone of same is directly attached to the ester oxygen, in an amount sufficient to provide gas permeability to the matrix and wettabillity to the lens surface when hydrated.
Claim 3
Dependent Claim
22 words
The vision correction lens of claim 1 wherein the silicone group is: ##STR10## wherein n is an integer of 1 to 10.
Claim 4
Dependent Claim
13 words
The vision correction lens of claim 1 wherein the silicone groups is: ##STR11##
Claim 5
Dependent Claim
30 words
The vision correction lens of claim 1 wherein the polymeric matrix is derived from an acrylic monomer, a styrenic monomer, or mixtures thereof, sufficient to provide a rigid lens matrix.
Claim 6
Dependent Claim
28 words
The vision correction lens of claim 1 wherein the polymeric matrix also contains sufficient crosslinking agent having at least two ethylenically unsaturated groups to provide additional mechanical stability.
Claim 7
Dependent Claim
20 words
The vision correction lens of claim 1 wherein the lens has a hardness of at least 50 Shore hardness units.
Claim 8
Dependent Claim
25 words
The vision correction lens of claim 1 wherein the surface of the vision correction lens has a wettablity contact angle of less than 75 degrees.
Claim 9
Dependent Claim
26 words
The vision correction lens of claim 1 wherein the vision correction lens has a minimum oxygen permeability of at least about 4×10 -11 D K units.
Claim 10
Dependent Claim
83 words
An optically clear, hard, mechanically stable vision correction lens material which comprises a polymeric matrix having randomly polymerized in the matrix, residues derived from an ethylenically unsaturated silicone-containing monomer, having a hydrolyzable silicone group, of the formula: ##STR12## wherein R is hydrogen or a C 1-5 alkyl and A is a silicone group wherein a silicone of same is directly attached to the ester oxygen, in an amount sufficient to provide gas permeability to the matrix and wettability to the surface when hydrated.
Claim 11
Dependent Claim
83 words
An optically clear, hard, mechanically stable vision correction lens material which comprises a polymeric matrix having randomly polymerized in the matrix, residues derived from an ethylenically unsaturated silicone-containing monomer, having a hydrolyzable silicone group, of the formula: ##STR12## wherein R is hydrogen or a C 1-5 alkyl and A is a silicone group wherein a silicone of same is directly attached to the ester oxygen, in an amount sufficient to provide gas permeability to the matrix and wettability to the surface when hydrated.
Claim 12
Dependent Claim
34 words
The vision correction lens of claim 9 wherein the silcone group wherein a silicone of same is directly attached to the ester oxygen is: ##STR13## wherein n is an integer of 1 to 10.
Claim 13
Dependent Claim
13 words
The vision correction lens of claim 9 wherein the silicone group is: ##STR14##
Claim 14
Dependent Claim
23 words
The vision correction lens of claim 9 wherein the polymeric matrix is derived from an acrylic monomer, a styrenic monomer, or mixtures thereof.
Claim 15
Dependent Claim
27 words
The vision correction lens of claim 9 wherein the polymeric material also contains sufficient crosslinking agent having at least two ethylenically unsaturated groups to provide mechanical stability.
Claim 16
Dependent Claim
20 words
The vision correction lens of claim 9 wherein the lens has a hardness of at least 50 Shore hardness units.
Claim 17
Dependent Claim
25 words
The vision correction lens of claim 9 wherein the surface of the vision correction lens has a wettability contact angle of less than 75 degrees.
Claim 18
Dependent Claim
25 words
The vision correction lens of claim 9 wherein the vision correction lens has a minimum oxygen permeability of at least 4×10 -11 D K units.
Claim 19
Independent Claim
63 words
A method of forming an optically clear, hard, mechanically stable, gas permeable, wettable vision correction lens material which comprises: (a) forming a mixture of ethylenically unsaturated monomers that includes an ethylenically unsaturated silicone containing monomer, having a hydrolyzed silicone group, of the formula: ##STR15## wherein R is hydrogen or a C 1-5 alkyl and A is a silicone group; and (b) initiating polymerization.
Claim 20
Independent Claim
63 words
A method of forming an optically clear, hard, mechanically stable, gas permeable, wettable vision correction lens material which comprises: (a) forming a mixture of ethylenically unsaturated monomers that includes an ethylenically unsaturated silicone containing monomer, having a hydrolyzed silicone group, of the formula: ##STR15## wherein R is hydrogen or a C 1-5 alkyl and A is a silicone group; and (b) initiating polymerization.
Claim 21
Independent Claim
82 words
A method of forming a contact lens which comprises shaping a polymeric matrix having randomly polymerized in the matrix, residues derived from an ethylenically unsaturated silicone containing monomer, having a hydrolyzable silicone group, of the formula: ##STR16## wherein R is a hydrogen or a C 1-5 alkyl and A is a silicone group, in an amount sufficient to provide gas permeability to the matrix and wettability to the lens surface when hydrated, into the form of a lens and hydrating the lens.
Claim 22
Independent Claim
82 words
A method of forming a contact lens which comprises shaping a polymeric matrix having randomly polymerized in the matrix, residues derived from an ethylenically unsaturated silicone containing monomer, having a hydrolyzable silicone group, of the formula: ##STR16## wherein R is a hydrogen or a C 1-5 alkyl and A is a silicone group, in an amount sufficient to provide gas permeability to the matrix and wettability to the lens surface when hydrated, into the form of a lens and hydrating the lens.
References Cited (Backward Citations)
US2674743A
Cited
US3400175A
Cited
US3645835A
Cited
US3641208A
Cited
US3654250A
Cited
US3745042A
Cited
US3619044A
Cited
US3651035A
Cited
US3681305A
Cited
US3718383A
Cited
US3792125A
Cited
US3808178A
Cited
US4101513A
Cited
US4139692A
Cited
US4152508A
Cited
US4138382A
Cited
US4424328A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1989-04-07 | 1989-10-07 | 1990-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-07 | 1993-10-07 | 1994-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-07 | 1997-10-07 | 1998-04-08 | $7700.00 | Window Closed / Lapsed |