US4643537A
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Assignee: PPG Industries Inc
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Filing: 1984-06-05
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Granted: 1987-02-17
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Expires: 2004-06-05
Abstract
Abstract Polyol(allyl carbonate) monomer, e.g., diethylene glycol bis(allyl carbonate), containing 1-[(2,6-dibromo-4-methylphenyl)amino]-4-hydroxy-9,10-anthracenedione in amounts sufficient to selectively absorb at least 90 percent of the visible and ultraviolet light segments of the electromagnetic spectrum below 550 nanometers is described. Also described are ophthalmic articles prepared by curing the monomer.
Inventors
- 👤 Jeffrey D. Vance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:54
CPC Classifications
C; C08; C08F; C08F18/00; C08F18/24; G; G02; G02B; G02B1/00; G02B1/04
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
46 words
A composition of liquid polyol(allyl carbonate) monomer and 1-[(dibromo-4-methylphenyl)amino]-4-hydroxy-9,10-anthracenedione said anthracenedione being present in amounts such that a polymerizate prepared from such composition selectively absorbs at least 90 percent of the visible and ultraviolet light segments of the electromagnetic spectrum below the wavelength of 550 nanometers.
Claim 2
Dependent Claim
46 words
A composition of liquid polyol(allyl carbonate) monomer and 1-[(dibromo-4-methylphenyl)amino]-4-hydroxy-9,10-anthracenedione said anthracenedione being present in amounts such that a polymerizate prepared from such composition selectively absorbs at least 90 percent of the visible and ultraviolet light segments of the electromagnetic spectrum below the wavelength of 550 nanometers.
Claim 3
Dependent Claim
21 words
The composition of claim 1 wherein the anthracenedione is present in amounts of from above 0.15 to about 0.40 weight percent.
Claim 4
Dependent Claim
10 words
The composition of claim 1 wherein the anthracenedione is 1-[(2,6-dibromo-4-methylphenyl)amino]-4-hydroxy-9,10-anthracenedione.
Claim 5
Dependent Claim
64 words
The composition of claim 3 wherein the liquid polyol(allyl carbonate) monomer is represented by the following graphic formula, ##STR10## wherein R 2 is an alkylene glycol having from 2 to 4 carbon atoms or a poly(C 2 -C 4 )alkylene glycol, and wherein R 1 is the allyl radical, ##STR11## wherein R o is hydrogen, halogen or a C 1 -C 4 alkyl radical.
Claim 6
Dependent Claim
21 words
The composition of claim 3 wherein the anthracenedione is present in amounts of from above 0.15 to about 0.40 weight percent.
Claim 7
Dependent Claim
30 words
The composition of claim 5 wherein the polymerizate absorbs at least 95 percent of the visible and ultraviolet light segments of the electromagnetic spectrum below the wavelength of 550 nanometers.
Claim 8
Dependent Claim
15 words
The composition of claim 1 wherein the polyol(allyl carbonate) monomer is diethylene glycol bis(allyl carbonate).
Claim 9
Dependent Claim
21 words
The composition of claim 4 wherein the anthracenedione is present in amounts of from about 0.20 to about 0.30 weight percent.
Claim 10
Dependent Claim
64 words
The composition of claim 1 wherein the liquid polyol(allyl carbonate) monomer is represented by the following graphic formula, ##STR12## wherein R 2 is an alkylene glycol having from 2 to 4 carbon atoms or a poly(C 2 -C 4 )alkylene glycol, and wherein R 1 is the allyl radical, ##STR13## wherein R o is hydrogen, halogen or a C 1 -C 4 alkyl radical.
Claim 11
Dependent Claim
15 words
The composition of claim 9 wherein the polyol(allyl carbonate) monomer is diethylene glycol bis(allyl carbonate).
Claim 12
Dependent Claim
21 words
The composition of claim 10 wherein the anthracenedione is present in amounts of from above 0.15 to about 0.30 weight percent.
Claim 13
Dependent Claim
52 words
A composition of diethylene glycol bis(allyl carbonate) and from about 0.20 to about 0.30 weight percent 1-[2,6-dibromo-4-methylphenyl)amino]-4-hydroxy-9,10-anthracenedione, said amount of anthracenedione being such that a polymerizate of said composition selectively absorbs at least 90 percent of the visible and ultraviolet light segments of the electromagnetic spectrum below the wavelength of 550 nanometers.
Claim 14
Dependent Claim
52 words
A composition of diethylene glycol bis(allyl carbonate) and from about 0.20 to about 0.30 weight percent 1-[2,6-dibromo-4-methylphenyl)amino]-4-hydroxy-9,10-anthracenedione, said amount of anthracenedione being such that a polymerizate of said composition selectively absorbs at least 90 percent of the visible and ultraviolet light segments of the electromagnetic spectrum below the wavelength of 550 nanometers.
Claim 15
Dependent Claim
30 words
The composition of claim 12 wherein the polymerizate absorbs at least 95 percent of the visible and ultraviolet light segments of the electromagnetic spectrum below the wavelength of 550 nanometers.
Claim 16
Dependent Claim
37 words
A polymerizate of polyol(allyl carbonate), said polymerizate containing 1-[(dibromo-4-methylphenyl)amino]-4-hydroxy-9,10-anthracenedione in amounts such that it selectively absorbs at least 90 percent of the visible and ultraviolet light segments of the electromagnetic spectrum below the wavelength of 550 nanometers.
Claim 17
Dependent Claim
37 words
A polymerizate of polyol(allyl carbonate), said polymerizate containing 1-[(dibromo-4-methylphenyl)amino]-4-hydroxy-9,10-anthracenedione in amounts such that it selectively absorbs at least 90 percent of the visible and ultraviolet light segments of the electromagnetic spectrum below the wavelength of 550 nanometers.
Claim 18
Dependent Claim
21 words
The polymerizate of claim 14 wherein the anthracenedione is present in amounts of from above 0.15 to about 0.40 weight percent.
Claim 19
Dependent Claim
10 words
The polymerizate of claim 15 wherein the anthracenedione is 1-[2,6-dibromo-4-methylphenyl)amino]-4-hydroxy-9,10-anthracenedione.
Claim 20
Dependent Claim
62 words
The polymerizate of claim 15 wherein the polyol(allyl carbonate) is represented by the following graphic formula, ##STR14## wherein R 2 is an alkylene glycol having from 2 to 4 carbon atoms or a poly(C 2 -C 4 )alkylene glycol, and wherein R 1 is the allyl radical, ##STR15## wherein R o is hydrogen, halogen or a C 1 -C 4 alkyl radical.
Claim 21
Dependent Claim
36 words
The polymerizate of claim 17 wherein the anthracenedione is 1-[(2,6-dibromo-4-methylphenyl)amino]-4-hydroxy-9,10-anthracenedione and the percent absorption of the visible and ultraviolet light segments of the electromagnetic spectrum below the wavelength of 550 nanometers is at least 95 percent.
Claim 22
Dependent Claim
14 words
The polymerizate of claim 17 wherein the polyol(allyl carbonate) is diethylene glycol bis(allyl carbonate).
Claim 23
Dependent Claim
10 words
The polymerizate of claim 19 wherein the anthracenedione is 1-[(2,6-dibromo-4-methylphenyl)amino]-4-hydroxy-9,10-anthracenedione.
Claim 24
Dependent Claim
51 words
An ophthalmic article of poly[diethylene glycol bis(allyl carbonate)] and from above 0.15 to about 0.40 weight percent 1-[2,6-dibromo-4-methylphenyl)amino]-4-hydroxy-9,10-anthracenedione, said anthracenedione being present in amounts such that the article selectively absorbs at least 95 percent of the visible and ultraviolet light segments of the electromagnetic spectrum below the wavelength of 550 nanometers.
Claim 25
Dependent Claim
51 words
An ophthalmic article of poly[diethylene glycol bis(allyl carbonate)] and from above 0.15 to about 0.40 weight percent 1-[2,6-dibromo-4-methylphenyl)amino]-4-hydroxy-9,10-anthracenedione, said anthracenedione being present in amounts such that the article selectively absorbs at least 95 percent of the visible and ultraviolet light segments of the electromagnetic spectrum below the wavelength of 550 nanometers.
Claim 26
Dependent Claim
12 words
The article of claim 17 wherein the article is an ophthalmic lens.
References Cited (Backward Citations)
US1886237A
Cited
US1969735A
Cited
US2370567A
Cited
US2403113A
Cited
US3106438A
Cited
GB1407228A
Cited
US4139578A
Cited
US4360460A
Cited
US4346197A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-16 | 1990-08-18 | 1991-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-16 | 1994-08-18 | 1995-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-16 | 1998-08-18 | 1999-02-17 | $7700.00 | Window Closed / Lapsed |