Patent EP0208239A2 successfully refreshed from Google Patents.
EP0208239A2
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EP
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Plastic-clad light-transmitting fiber
Assignee: AGC Inc
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Filing: 1986-07-01
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Granted: —
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Expires: 2006-07-01
Abstract
Abstract A plastic-clad light-transmitting fiber having a high NA (numerical aperture) and low transmission loss, which consists essentially of a core of quartz glass or optical glass and a clad of organopolysiloxane, wherein the clad of organopolysiloxane is a cured body having 30% by weight or more offluorine content, which is obtained by the curing reaction of a vinyl group-containing organofluoropolysiloxane and a hydrogen-containing fluorosilicone compound, and wherein the vinyl group-containing organofluorosiloxane is a copolymerized polysiloxane obtained from a hydrocarbon siloxane unit and a polyfluoroalkyl group-containing siloxane unit, with a ratio of copolymerization of hydrocarbon siloxane unit ranging from 20 to 75 mol%.
Inventors
- 👤 Masashi Matsuo
- 👤 Yutaka Furukawa
- 👤 Toshio Iwamoto
- 👤 Shoichi Kawakami
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 07:48
CPC Classifications
C; C03; C03C; C03C13/00; C03C13/04; C03C25/00; C03C25/10; C03C25/104; C03C25/105; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
101 words
A plastic-clad light-transmitting fiber consisting essentially of a core of quartz glass or optical glass and a clad of organopolysiloxane, said plastic-clad light-transmitting fiber being characterized in that said clad of organopolysiloxane is a cured body having 30% by weight or more of the fluorine content, which is obtained by the curing reaction of a vinyl group-containing organofluoropolysiloxane and a hydrogen-containing fluorosilicone compound, and that the vinyl group-containing organofluoropolysiloxane is a copolymerized polysiloxane obtained from a hydrocarbon siloxane unit and a polyfluoroalkyl group-containing siloxane unit, with a ratio of copolymerization of said hydrocarbon siloxane unit ranging from 20 to 75 mol%.
Claim 2
Dependent Claim
101 words
A plastic-clad light-transmitting fiber consisting essentially of a core of quartz glass or optical glass and a clad of organopolysiloxane, said plastic-clad light-transmitting fiber being characterized in that said clad of organopolysiloxane is a cured body having 30% by weight or more of the fluorine content, which is obtained by the curing reaction of a vinyl group-containing organofluoropolysiloxane and a hydrogen-containing fluorosilicone compound, and that the vinyl group-containing organofluoropolysiloxane is a copolymerized polysiloxane obtained from a hydrocarbon siloxane unit and a polyfluoroalkyl group-containing siloxane unit, with a ratio of copolymerization of said hydrocarbon siloxane unit ranging from 20 to 75 mol%.
Claim 3
Dependent Claim
37 words
The plastic-clad light-transmitting fiber according to Claim 1, wherein said clad of organopolysiloxane is a cured body formed by heat-curing reaction of a composition containing a vinyl group-containing organofluoropolysiloxane, a hydrogen-containing fluorosilicone compound, and a platinum compound.
Claim 4
Dependent Claim
25 words
The plastic-clad light-transmitting fiber according to Claim 1, wherein said vinyl group-containing organofluoropolysiloxane is an organofluoropolysiloxane containing the vinyl group at the terminal end thereof.
Claim 5
Dependent Claim
75 words
The plastic-clad light-transmitting fiber according to Claim 1, wherein said vinyl group-containing organofluoropolysiloxane is an organofluoropolysiloxane containing the vinyl group at the terminal end thereof, said compound being represented by the following formula: wherein Q represents a polyfluoroalkyl group which may contain therein an ether bond; Me denotes methyl group; m/ℓ indicates a ratio of from 0.54 to 3; and m + i is the total unit number of the compounds of 80 or more.
Claim 6
Dependent Claim
46 words
The plastic-clad light-transmitting fiber according to Claim 4, wherein said polyfluoroalkyl group represented by Q has a structure of Rf-R- wherein Rf designates a perfluoroalkyl group having two to ten carbon atoms; R denotes an alkylene group; and Rf and R may contain an ether bond.
Claim 7
Dependent Claim
89 words
The plastic-clad light-transmitting fiber according to Claim 1, wherein said vinyl group-containing organofluoropolysiloxane is an organofluoropolysiloxane containing the vinyl group at the terminal end thereof, said compound being represented by the following formula: wherein Q represents a polyfluoroalkyl group which may contain therein an ether bond; Me denotes methyl group; Rf' designates a perfluoroalkylene group which may contain therein an ether bond; q/p is a ratio in a range of from 1 to 2; and q + p is the total unit number of the compounds of-80 or more.
Claim 8
Dependent Claim
47 words
The plastic-clad light-transmitting fiber according to Claim 6, wherein said polyfluoroalkyl group represented by Q has a structure of Rf-R- wherein Rf designates a perfluoroalkyl group having two to ten carbon atoms; R denotes an alkylene group; and Rf and R may contain therein an ether bond.
Claim 9
Dependent Claim
64 words
The plastic-clad light-transmitting fiber according to Claim 1, wherein said hydrogen-containing fluorosilicone compound is represented by the following general formula: wherein Rf" represents a perfluoroalkylene group which may contain therein an ether bond; R i and R 2 are an alkyl group or a fluoroalkyl group; and a is an integer of 1 to 3 and b is an integer of 0 or 1.
Claim 10
Dependent Claim
21 words
The plastic-clad light-transmitting fiber according to Claim 8, wherein said hydrogen-containing fluorosilicone compound has its viscosity of 1,000 cps or below.
Claim 11
Dependent Claim
23 words
The plastic-clad light-transmitting fiber according to Claim 8, wherein said hydrogen-containing fluorosilicon compound has its fluorine content of 30% by weight or more.
References Cited (Backward Citations)
No citation records indexed.
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