US4511209A
Expired / Lapsed
US
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Composition having improved optical qualities
Assignee: Furukawa Electric North America Inc
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Filing: 1984-01-20
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Granted: 1985-04-16
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Expires: 2004-01-20
Abstract
Abstract Compositions with improved optical qualities, based on highly fluorinated monofunctional acrylates, are cured for use in a wide range of optical articles. The preferred components of the composition are (1) a highly fluorinated monofunctional acrylate; (2) a trifunctional or higher acrylate that serves as a crosslinking agent; (3) a mono or poly-functional thiol that functions as a synergist; and (4) a photoinitiator such as an ultraviolet (UV) initiator. These components can be varied relative to one another over a wide range, but the fluoroacrylate must always be the major component. Where the fluoroacrylate is a solid at room temperature, a small amount of solvent like di-isobutyl ketone or methylene chloride can be added.
Inventors
- 👤 Bolesh J. Skutnik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:42
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/104; C03C25/105; G; G02; G02B; G02B1/00; G02B1/04; G02B1/045; G02B1/048
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
56 words
A cladding composition for plastic clad silica optical fibers comprising a highly fluorinated monofunctional acrylate with a refractive index below 1.38 and constituting more than 50% by weight of the composition, a polyfunctional acrylate being trifunctional or higher serving as a crosslinking agent, a mono or polyfunctional thiol that functions as a synergist, and a photoinitiator.
Claim 2
Dependent Claim
56 words
A cladding composition for plastic clad silica optical fibers comprising a highly fluorinated monofunctional acrylate with a refractive index below 1.38 and constituting more than 50% by weight of the composition, a polyfunctional acrylate being trifunctional or higher serving as a crosslinking agent, a mono or polyfunctional thiol that functions as a synergist, and a photoinitiator.
Claim 3
Dependent Claim
45 words
The composition according to claim 1 wherein said highly fluorinated monofunctional acrylate comprises 50 to 90% by weight, said polyfunctional acrylate comprises 2.0 to 35% by weight, said thiol synergist comprises 0.5 to 20% by weight, and said photoinitiator comprises 0.5 to 20% by weight.
Claim 4
Dependent Claim
45 words
The composition according to claim 1 wherein said highly fluorinated monofunctional acrylate comprises 60 to 90% by weight, said polyfunctional acrylate comprises 5 to 25% by weight, said thiol synergist comprises 1 to 10% by weight, and said photoinitiator comprises 0.9 to 10% by weight.
Claim 5
Dependent Claim
42 words
The composition according to claims 1, 2 or 3 wherein said highly fluorinated monofunctional acrylate has the general formula: R.sub.F (CH.sub.2).sub.n O.sub.2 CC.sub.2 H.sub.3 where R F =X--(CF 2 ) m ,m=3-12, X=H or F, and n=1, 2 . . . 3m.
Claim 6
Dependent Claim
28 words
The composition according to claims 1, 2 or 3 wherein said highly fluorinated monofunctional acrylate is trihydroperfluoroundecylacrylate, said polyfunctional acrylate is trimethylolpropanetriacrylate, and said thiol synergist is γ-mercaptopropyltrimethoxysilane.
Claim 7
Dependent Claim
29 words
The composition according to claims 1, 2 or 3 wherein said highly fluorinated monofunctional acrylate is trihydroperfluoroheptylacrylate, said polyfunctional acrylate is trimethylolpropanetriacrylate, and said thiol synergist is trimethylolpropanetris 3-mercaptoproprionate.
Claim 8
Dependent Claim
66 words
A plastic clad silica optical fiber comprising a fused silica core, and an ultraviolet cured cladding composition which includes a mixture of a highly fluorinated monofunctional acrylate with a refractive index below 1.38 and constituting more than 50% by weight of the composition, a trifunctional or higher acrylate serving as a crosslinking agent, mono or polyfunctional thiol that functions as a synergist, and an ultraviolet initiator.
Claim 9
Dependent Claim
66 words
A plastic clad silica optical fiber comprising a fused silica core, and an ultraviolet cured cladding composition which includes a mixture of a highly fluorinated monofunctional acrylate with a refractive index below 1.38 and constituting more than 50% by weight of the composition, a trifunctional or higher acrylate serving as a crosslinking agent, mono or polyfunctional thiol that functions as a synergist, and an ultraviolet initiator.
Claim 10
Dependent Claim
52 words
A composition having improved optical qualities, said composition comprising (a) a highly fluorinated monofunctional acrylate constituting more than 50% by weight of the composition; (b) a polyfunctional acrylate being trifunctional or higher serving as a crosslinking agent; (c) a mono or polyfunctional thiol that functions as a synergist; and (d) an photoinitiator.
Claim 11
Dependent Claim
52 words
A composition having improved optical qualities, said composition comprising (a) a highly fluorinated monofunctional acrylate constituting more than 50% by weight of the composition; (b) a polyfunctional acrylate being trifunctional or higher serving as a crosslinking agent; (c) a mono or polyfunctional thiol that functions as a synergist; and (d) an photoinitiator.
Claim 12
Dependent Claim
45 words
The composition according to claim 8 wherein said highly fluorinated monofunctional acrylate comprises 50 to 90% by weight, said polyfunctional acrylate comprises 2.0 to 35% by weight, said thiol synergist comprises 0.5 to 20% by weight, and said photoinitiator comprises 0.5 to 20% by weight.
Claim 13
Dependent Claim
45 words
The composition according to claim 8 wherein said highly fluorinated monofunctional acrylate comprises 60 to 90% by weight, said polyfunctional acrylate comprises 5 to 25% by weight, said thiol synergist comprises 1 to 10% by weight, and said photoinitiator comprises 0.9 to 10% by weight.
Claim 14
Dependent Claim
20 words
The composition of claim 8, 9 or 10 wherein said highly fluorinated monofunctional acrylate has a refractive index below 1.38.
Claim 15
Dependent Claim
43 words
The composition according to claims 8, 9 or 10 wherein said highly fluorinated monofunctional acrylate has the general formula: R.sub.F (CH.sub.2).sub.n O.sub.2 CC.sub.2 H.sub.3 where R F =X--(CF 2 ) m , m=3-12, X=H or F, and n=1, 2 . . . 3m.
Claim 16
Dependent Claim
50 words
The composition according to claims 8, 9 or 10 wherein said highly fluorinated monofunctional acrylate has the general formula: ##STR2## where R=CH 3 , C 2 H 5 . . . C 4 H 9 R F =C N F 2N+1 X=H or CH 3 ; and N=2 or more.
Claim 17
Dependent Claim
28 words
The composition according to claims 8, 9 or 10 wherein said highly fluorinated monofunctional acrylate is trihydroperfluoroundecylacrylate, said polyfunctional acrylate is trimethylolpropanetriacrylate, and said thiol synergist is γ-mercaptopropyltrimethoxysilane.
Claim 18
Dependent Claim
29 words
The composition according to claims 8, 9 or 10 wherein said highly fluorinated monofunctional acrylate is trihydroperfluoroheptylacrylate, said polyfunctional acrylate is trimethylolpropanetriacrylate, and said thiol synergist is trimethylolpropanetris 3-mercaptoproprionate.
Claim 19
Dependent Claim
56 words
An optical fiber comprising: (a) a core, and (b) an ultraviolet cured composition which includes a mixture of a highly fluorinated monofunctional acrylate and constituting more than 50% by weight of the composition, a trifunctional or higher acrylate serving as a crosslinking agent, a mono or polyfunctional thiol that functions as a synergist, and a photoinitiator.
Claim 20
Dependent Claim
56 words
An optical fiber comprising: (a) a core, and (b) an ultraviolet cured composition which includes a mixture of a highly fluorinated monofunctional acrylate and constituting more than 50% by weight of the composition, a trifunctional or higher acrylate serving as a crosslinking agent, a mono or polyfunctional thiol that functions as a synergist, and a photoinitiator.
Claim 21
Dependent Claim
21 words
The optical fiber of claim 16 wherein said composition includes a highly fluorinated monofunctional acrylate with a refractive index below 1.38.
Claim 22
Dependent Claim
14 words
The optical fiber of claim 16 wherein said core is a fused silica core.
Claim 23
Dependent Claim
78 words
An optical article comprising (a) a substrate; and (b) at least one layer of a cured composition having a variable refractive index and being layered in decreasing refractive index order from said substrate, said compositions includes a mixture of a highly fluorinated mono functional acrylate constituting more than 50% by weight of the composition, a trifunctional or higher acrylate serving as a crosslinking agent, a mono or polyfunctional thiol that functions as a synergist and an ultraviolet photo-initiator.
Claim 24
Dependent Claim
78 words
An optical article comprising (a) a substrate; and (b) at least one layer of a cured composition having a variable refractive index and being layered in decreasing refractive index order from said substrate, said compositions includes a mixture of a highly fluorinated mono functional acrylate constituting more than 50% by weight of the composition, a trifunctional or higher acrylate serving as a crosslinking agent, a mono or polyfunctional thiol that functions as a synergist and an ultraviolet photo-initiator.
Claim 25
Dependent Claim
16 words
The optical article of claim 19 further comprising said substrate being made of said cured composition.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-15 | 1988-10-15 | 1989-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-15 | 1992-10-15 | 1993-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-15 | 1996-10-15 | 1997-04-16 | $7700.00 | Window Closed / Lapsed |