Stock material or miscellaneous articles – Composite – Of bituminous or tarry residue
Patent
1988-09-08
1989-06-27
Sikes, William L.
Stock material or miscellaneous articles
Composite
Of bituminous or tarry residue
350 9629, 428373, 525200, G02B 600, D02G 300, C08L 2712
Patent
active
048423696
ABSTRACT:
A cladding material for plastic optical fiber comprising a vinylidene fluoride-trifluoroethylene-hexafluoroacetone copolymer which comprises 3.5 to 6.5% by mole of hexafluoroacetone units, a molar ratio of vinylidene fluoride unit to trifluoroethylene unit of 3 to 6:1, and a melt index of 10 to 60 g/10 min, and a plastic optical fiber comprising said cladding material and a methyl methacrylate homopolymer or copolymer which comprises over 50% by weight of methyl methacrylate units as the core material.
REFERENCES:
patent: 4542957 (1985-09-01), Ishiwari et al.
patent: 4617350 (1986-10-01), Maeda et al.
patent: 4642326 (1987-02-01), Yasuhura et al.
patent: 4687295 (1987-08-01), Koishi et al.
patent: 4747662 (1988-05-01), Fitz
patent: 4756599 (1988-07-01), Maeda et al.
Katsuta Shigeki
Koishi Toshio
Maeda Kazuhiko
Teshima Shin'ichi
Yamauchi Taku
Asahi Kasei Kogyo Kabushiki Kaisha
Central Glass Company Limited
Sikes William L.
Ullah Akm E.
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