US5199098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moisture resistant optical fiber coatings with improved stability
Assignee: Corning Inc
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Filing: 1991-10-09
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Granted: 1993-03-30
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Expires: 2011-10-09
Abstract
Abstract Moisture-resistant UV-curable acrylate resin coated optical fibers are described, the coating compositions comprising a phosphite stabilizing agent in combination with an acrylate-terminated polyurethane oligomer wherein the urethane groups are the reaction product of an aliphatic isocyanate and a predominantly saturated, predominantly nonpolar aliphatic diol. The coating compositions offer improved curing speed while maintaining excellent thermal stability.
Inventors
- 👤 Kelly J. Nolan
- 👤 Emily M. Squires
- 👤 Eric H. Urruti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:00
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4429; G02B6/443; C; C03; C03C; C03C25/00; C03C25/10; C03C25/104; C03C25/106; C09; C09D; C09D175/00; C09D175/04; C09D175/14; C09D175/16
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
62 words
A coated optical fiber exhibiting improved moisture resistance which includes a glass optical fiber disposed within a cured polymer coating, characterized in that the cured polymer coating comprises a phosphite stabilizing agent in combination with a cured polyurethane-acrylate polymer, the urethane groups in the cured polymer being the reaction product of an aliphatic isocyanate and a predominantly saturated, predominantly nonpolar aliphatic diol.
Claim 2
Dependent Claim
62 words
A coated optical fiber exhibiting improved moisture resistance which includes a glass optical fiber disposed within a cured polymer coating, characterized in that the cured polymer coating comprises a phosphite stabilizing agent in combination with a cured polyurethane-acrylate polymer, the urethane groups in the cured polymer being the reaction product of an aliphatic isocyanate and a predominantly saturated, predominantly nonpolar aliphatic diol.
Claim 3
Dependent Claim
17 words
A coated optical fiber in accordance with claim 1 wherein the aliphatic isocyanate is a branched-chain diisocyanate.
Claim 4
Dependent Claim
24 words
A coated optical fiber in accordance with claim 1 wherein the aliphatic isocyanate is a branched-chain trifunctional isocyanate comprising both isocyanate and allophanate functionality.
Claim 5
Dependent Claim
43 words
A coated optical fiber in accordance with claim 3 wherein the predominantly saturated, predominantly nonpolar aliphatic diol is selected from the group consisting of alkane and alkylene diols of from 2-250 carbon atoms, said diols being substantially free of ether and ester groups.
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) | 1996-03-29 | 1996-09-28 | 1997-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-03-29 | 2000-09-28 | 2001-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-03-29 | 2004-09-28 | 2005-03-30 | $7700.00 | Window Closed / Lapsed |