US5298291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy-functional fluoropolyol polyacrylate coating of optical fibers
Assignee: United States Department of the Navy
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Filing: 1993-03-19
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Granted: 1994-03-29
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Expires: 2013-03-19
Abstract
Abstract An infinite network polymer containing fluorine as a coating or cladding material for optical fibers. Fluoropolymers, such as silicone amine C0-C16 fluoroepoxy resin and cis-trans fluoropolyol polyacrylate, reduce water permeability because of the bonding between the fluoropolymer and the substrate. The fluoropolymers exhibit substantially increased moisture resistance when compared to conventional fiber coating materials. Variations in chemical structure effect physical properties of the polymer and different compounds can be chosen for their desired physical properties, such as moisture resistance or abrasion resistance. Incorporation of fluorine into the polymer structure lowers the index of refraction such that the polymer can be used as a cladding for silica glass in an optical fiber. One fluoropolymer formulation allows in-line coating of the optical fiber in a oxygen environment.
Inventors
- 👤 Liliana Klinger
- 👤 James R. Griffith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:04
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/104; C03C25/106; C03C25/105; Y; Y10; Y10S; Y10S525/00; Y10S525/903
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
128 words
A u.v. photocured fluoropolyol polyacrylate optical fiber coating which has been produced by in-line coating of an optical fiber with a mixture comprising a photocurable cis-trans fluoropolyol polyacrylate resin in admixture with a vinyl monomer, in an amount effective to reduce the viscosity of said photocurable fluoropolyol polyacrylate resin to between 300 and 10,000 cP prior to copolymerization therewith, and an amount of a benzophenone or 1-hydroxycyclohexylphenyl ketone photoinitiator effective to render said mixture u.v.-photocurable and curing said mixture with u.v. radiation in the presence of oxygen to provide an infinite network polymer comprising a copolymer of a cis-trans fluoropolyol polyacrylate containing the following structure: ##STR1## wherein n is an integer from 4 to 10 and R F is ##STR2## and R' F is ##STR3## and said monomer.
Claim 2
Dependent Claim
128 words
A u.v. photocured fluoropolyol polyacrylate optical fiber coating which has been produced by in-line coating of an optical fiber with a mixture comprising a photocurable cis-trans fluoropolyol polyacrylate resin in admixture with a vinyl monomer, in an amount effective to reduce the viscosity of said photocurable fluoropolyol polyacrylate resin to between 300 and 10,000 cP prior to copolymerization therewith, and an amount of a benzophenone or 1-hydroxycyclohexylphenyl ketone photoinitiator effective to render said mixture u.v.-photocurable and curing said mixture with u.v. radiation in the presence of oxygen to provide an infinite network polymer comprising a copolymer of a cis-trans fluoropolyol polyacrylate containing the following structure: ##STR1## wherein n is an integer from 4 to 10 and R F is ##STR2## and R' F is ##STR3## and said monomer.
Claim 3
Dependent Claim
13 words
The optical fiber coating of claim 1, wherein said photoinitiator is 1-hydroxycyclohexylphenyl ketone.
Claim 4
Dependent Claim
29 words
The u.v. photocured fluoropolyol polyacrylate optical fiber coating of claim 1, wherein said vinyl monomer is selected from the group consisting of an acrylate, a diacrylate and a methacrylate.
Claim 5
Independent Claim
125 words
A method of preparing an optical fiber having a fluoropolyol polyacrylate coating thereon, comprising the steps of: coating an optical fiber with a photocurable cis-trans fluoropolyol polyacrylate optical fiber coating resin in admixture with a vinyl monomer, in an amount effective to reduce the viscosity of said photocurable fluoropolyol polyacrylate resin to between 300 and 10,000 cP and an amount of a benzophenone or 1-hydroxycyclohexylphenyl ketone photoinitiator effective to render said mixture u.v.-photocurable; curing said mixture with u.v. radiation in the presence of oxygen, thereby providing an infinite network polymer comprising a copolymer of a cis-trans fluoropolyol polyacrylate containing the following structure: ##STR4## wherein n is an integer from 4 to 10 and R F is ##STR5## and R' F is ##STR6## and said monomer.
Claim 6
Independent Claim
125 words
A method of preparing an optical fiber having a fluoropolyol polyacrylate coating thereon, comprising the steps of: coating an optical fiber with a photocurable cis-trans fluoropolyol polyacrylate optical fiber coating resin in admixture with a vinyl monomer, in an amount effective to reduce the viscosity of said photocurable fluoropolyol polyacrylate resin to between 300 and 10,000 cP and an amount of a benzophenone or 1-hydroxycyclohexylphenyl ketone photoinitiator effective to render said mixture u.v.-photocurable; curing said mixture with u.v. radiation in the presence of oxygen, thereby providing an infinite network polymer comprising a copolymer of a cis-trans fluoropolyol polyacrylate containing the following structure: ##STR4## wherein n is an integer from 4 to 10 and R F is ##STR5## and R' F is ##STR6## and said monomer.
Claim 7
Dependent Claim
11 words
The method of claim 4, wherein said photoinitiator is 1-hydroxycyclohexylphenyl ketone.
Claim 8
Dependent Claim
23 words
The method of claim 4, wherein said vinyl monomer is selected from the group consisting of an acrylate, a diacrylate and a methacrylate.
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