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1. 发明授权

US4842369A Cladding material for plastic optical fiber and plastic optical fiber using the same 失效
标题翻译：塑料光纤和塑料光纤的包层材料使用相同
公开(公告)号：US4842369A
公开(公告)日：1989-06-27
申请号：US241952
申请日：1988-09-08
申请人： Shinichi Teshima , Shigeki Katsuta , Kazuhiko Maeda , Taku Yamauchi , Toshio Koishi
发明人： Shinichi Teshima , Shigeki Katsuta , Kazuhiko Maeda , Taku Yamauchi , Toshio Koishi
IPC分类号： G02B6/00 , D01F8/10
CPC分类号： D01F8/10 , Y10T428/2929
摘要： 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.

2. 发明授权

US4861835A Polymer blend composition suitable as optical material 失效
标题翻译：聚合物共混组合物适合作为光学材料
公开(公告)号：US4861835A
公开(公告)日：1989-08-29
申请号：US136714
申请日：1987-12-22
申请人： Kazuhiko Maeda , Taku Yamauchi , Toshio Koishi
发明人： Kazuhiko Maeda , Taku Yamauchi , Toshio Koishi
IPC分类号： C08L27/16 , C08L27/12 , C08L27/14 , C08L27/18 , C08L33/00 , C08L33/04 , C08L33/06
CPC分类号： C08L27/12 , C08L33/04 , C08L33/06 , Y10T428/2967
摘要： A polymer blend of 2-80 wt % of an acrylic or methacrylic ester base polymer and the balance of a ternary copolymer of vinylidene fluoride (VDF), hexafluoroacetone (HFA) and tetrafluoroethylene (TFE) is very high in transparency and serves as a thermoplastic resin useful for optical purposes. The first polymer of the blend can be selected from homopolymers and copolymers of C.sub.1 -C.sub.4 alkyl acrylates and methacrylates. The second polymer is preferably made up of 2-15 mol % of HFA, 5-60 mol % of TFE and the balance of VDF. The polymer blend has a relatively low index of refraction, which can be controlled by selecting the first and second polymers and/or by varying the blending ratio. The polymer blend is soluble in various organic solvents. Besides, the polymer blend serves as a thermochromic material that becomes opaque by heating and resumes transparency by cooling.
摘要翻译： 2-80重量％的丙烯酸或甲基丙烯酸酯基聚合物和偏二氟乙烯（VDF），六氟丙酮（HFA）和四氟乙烯（TFE）的三元共聚物的余量的聚合物共混物的透明度非常高，并且用作热塑性树脂可用于光学目的。共混物的第一种聚合物可以选自丙烯酸C1-C4烷基酯和甲基丙烯酸酯的均聚物和共聚物。第二聚合物优选由2-15mol％的HFA，5-60mol％的TFE和余量的VDF组成。聚合物共混物具有相对低的折射率，其可以通过选择第一和第二聚合物和/或通过改变共混比来控制。聚合物共混物可溶于各种有机溶剂。此外，聚合物共混物用作通过加热变得不透明并通过冷却恢复透明度的热变色材料。

3. 发明授权

US4756599A Optical fiber using vinylidene fluoride base ternary copolymer as cladding material 失效
标题翻译：使用偏二氟乙烯基三元共聚物作为包覆材料的光纤
公开(公告)号：US4756599A
公开(公告)日：1988-07-12
申请号：US93790
申请日：1987-09-08
申请人： Kazuhiko Maeda , Taku Yamauchi , Toshio Koishi
发明人： Kazuhiko Maeda , Taku Yamauchi , Toshio Koishi
IPC分类号： B29C47/00 , C08F214/22 , G02B6/02 , D02G3/00
CPC分类号： C08F214/22 , G02B6/02033 , B29C47/00 , B29C47/0014 , Y10T428/2929 , Y10T428/2933 , Y10T428/2938 , Y10T428/2964 , Y10T428/2967 , Y10T428/31544 , Y10T428/31649
摘要： The invention is an optical fiber having a core formed of either an inorganic glass or an organic polymer such as polymethyl methacrylate and a cladding layer formed of a ternary copolymer of vinylidene fluoride, hexafluoroacetone and either trifluoroethylene or tetrafluoroethylene. This cladding material is superior particularly in transparency and flexibility.
摘要翻译：本发明是具有由无机玻璃或有机聚合物如聚甲基丙烯酸甲酯形成的芯和由偏二氟乙烯，六氟丙酮和三氟乙烯或四氟乙烯的三元共聚物形成的包覆层的光纤。这种包层材料在透明性和柔韧性方面尤其优异。

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