US4376800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical lenses prepared from crosslinkable acrylic compositions
Assignee: Eastman Kodak Co
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Filing: 1981-04-13
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Granted: 1983-03-15
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Expires: 2001-04-13
Abstract
Abstract An optical lens having an absorbance of less than about 0.1 for visible radiation of a wavelength in the range of from about 400 to about 600 nanometers is prepared from a crosslinkable acrylic composition. The composition consists essentially of an acrylic monomer and an acrylated urethane oligomer and exhibits a shrinkage upon curing of less than about 0.4%. The lens is prepared by introducing the crosslinkable composition into a lens-forming means and curing it until it is substantially crosslinked.
Inventors
- 👤 Chen-i Lu
- 👤 Edward D. Morrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:57
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/34; C08F220/36; Y; Y10; Y10S; Y10S522/00; Y10S522/903
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
98 words
An optical lens having an absorbance of less than about 0.1 for visible radiation of a wavelength in the range of from about 400 to about 600 nanometers, said lens having been prepared by introducing into a lens-forming means a crosslinkable composition consisting essentially of: (1) an acrylic monomer having the formula ##STR7## wherein n is 1 to 3; each of R 5 and R 6 is hydrogen, methyl or halo; R 7 is a polyvalent aliphatic, alicyclic or aromatic group, and R 8 is hydrogen or ##STR8## and (2) an acrylated urethane oligomer having the formula ##STR9##
Claim 2
Dependent Claim
98 words
An optical lens having an absorbance of less than about 0.1 for visible radiation of a wavelength in the range of from about 400 to about 600 nanometers, said lens having been prepared by introducing into a lens-forming means a crosslinkable composition consisting essentially of: (1) an acrylic monomer having the formula ##STR7## wherein n is 1 to 3; each of R 5 and R 6 is hydrogen, methyl or halo; R 7 is a polyvalent aliphatic, alicyclic or aromatic group, and R 8 is hydrogen or ##STR8## and (2) an acrylated urethane oligomer having the formula ##STR9##
Claim 3
Dependent Claim
60 words
wherein each of R and R 1 is hydrogen, methyl or halo; each of R 2 and R 3 is alkylene, cycloalkylene or arylene; and R 4 is a divalent aliphatic, alicyclic or aromatic radical, said composition exhibiting a shrinkage upon curing of less than about 0.4%, and curing said composition in said lens-forming means until it is substantially crosslinked.
Claim 4
Dependent Claim
60 words
wherein each of R and R 1 is hydrogen, methyl or halo; each of R 2 and R 3 is alkylene, cycloalkylene or arylene; and R 4 is a divalent aliphatic, alicyclic or aromatic radical, said composition exhibiting a shrinkage upon curing of less than about 0.4%, and curing said composition in said lens-forming means until it is substantially crosslinked.
Claim 5
Dependent Claim
40 words
The optical lens of claim 1 wherein said composition consists essentially of from about 5 to about 35 percent, by weight, of said acrylic monomer and from about 65 to about 95 percent, by weight, of said acrylated urethane oligomer.
Claim 6
Dependent Claim
31 words
The optical lens of claim 1 wherein each of R and R 1 is hydrogen; R 2 is alkylene; R 3 is arylene; and R 4 is alkylene, cycloalkylene or arylene.
Claim 7
Dependent Claim
16 words
The optical lens of claim 3 wherein R 3 is phenylene and R 4 is alkylene.
Claim 8
Dependent Claim
28 words
The optical lens of claim 1 wherein n is 2; each of R 5 and R 6 is hydrogen; R 7 is alkylene and R 8 is hydrogen.
Claim 9
Dependent Claim
12 words
The optical lens of claim 1 which is a single component lens.
Claim 10
Dependent Claim
17 words
The optical lens of claim 1 having a thickness of from about 0.08 to about 2.6 centimeters.
Claim 11
Dependent Claim
31 words
The optical lens of claim 1 having an absorbance of less than about 0.075 for visible radiation of a wavelength in the range of from about 400 to about 600 nanometers.
Claim 12
Dependent Claim
22 words
The optical lens of claim 1 wherein said acrylated urethane oligomer has the formula: ##STR10## and said acrylic monomer is 1,6-hexanediol diacrylate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-14 | 1986-09-13 | 1987-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-14 | 1990-09-13 | 1991-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-14 | 1994-09-13 | 1995-03-15 | $7700.00 | Window Closed / Lapsed |