EP0171294A2
Expired / Lapsed
EP
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Process for producing plastic optical fibers
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1985-08-09
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Granted: —
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Expires: 2005-08-09
Abstract
Abstract @ A process for producing a plastic optical fiber having excellent long-term reliability with respect to resistance to heat and environment is disclosed, which comprises bulk-polymerizing a monomer or monomers that provide a non- crystalline homo- or copolymer, melt-spinning the resulting homo- or copolymer while removing any residual volatile components therefrom, and heating and/or exposing to radiation the resulting melt-spun fiber, wherein a polyfunctional reactant is incorporated during the step of bulk polymerization or melt-spinning.
Inventors
- 👤 Norifumi C/O Osaka Works Matsumiya
- 👤 Yoshinobuc/O Osaka Works Ueba
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 20:11
CPC Classifications
D; D01; D01F; D01F1/00; D01F1/02; D01F1/10; B; B29; B29D; B29D11/00; B29D11/00663
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
67 words
A process for producing a plastic optical fiber comprising the step of bulk-polymerizing a monomer or monomers that provide a non-crystalline homopolymer or copolymer, the step of melt-spinning the resulting homopolymer or copolymer while removing any residual volatile components therefrom, and the step of heating and/or exposing to radiation the resulting melt-spun fiber, wherein a polyfunctional reactant is incorporated during the step of bulk polymerization or melt-spinning.
Claim 2
Dependent Claim
67 words
A process for producing a plastic optical fiber comprising the step of bulk-polymerizing a monomer or monomers that provide a non-crystalline homopolymer or copolymer, the step of melt-spinning the resulting homopolymer or copolymer while removing any residual volatile components therefrom, and the step of heating and/or exposing to radiation the resulting melt-spun fiber, wherein a polyfunctional reactant is incorporated during the step of bulk polymerization or melt-spinning.
Claim 3
Dependent Claim
17 words
A process for producing a plastic optical fiber of claim 1, wherein said radiation is electron beam.
Claim 4
Dependent Claim
21 words
A process for producing a plastic optical fiber of claim 1, wherein said heating is performed by irradiation of ultraviolet ray.
Claim 5
Dependent Claim
39 words
A process for producing a plastic optical fiber of claim 1, wherein said non-crystalline homopolymer or copolymer is a polymer mainly composed of an alkyl methacrylate or a copolymer mainly composed of an alkyl methacrylate and a styrene derivative.
Claim 6
Dependent Claim
18 words
A process for producing a plastic optical fiber of claim 4, wherein said alkyl methacrylate is methyl methacrylate.
Claim 7
Dependent Claim
42 words
A process for producing a plastic optical fiber of claim 4, wherein said polymer mainly composed of an alkyl methacrylate or said copolymer mainly composed of an alkyl methacrylate and a styrene derivative contains 1 to 5 vol% of alkyl acrylate. -
Claim 8
Dependent Claim
25 words
A process for producing a plastic optical fiber of claim 6, wherein said alkyl acrylate has the alkyl moiety of 4 or mare carbon atoms.
Claim 9
Dependent Claim
37 words
A process for producing a plastic optical fiber of claim 1, wherein said polyfunctional reactant is incorporated in an amount of 1 to 20 parts by weight per 100 parts by weight of the homopolymer or copolymer.
Claim 10
Dependent Claim
32 words
A process for producing a plastic optical fiber of claim 8, wherein said polyfunctional reactant is selected from the group consisting of polyfunctional allyl compounds, polyfunctional acrylate compounds and polyfunctional methacrylate compounds.
References Cited (Backward Citations)
No citation records indexed.
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