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1. 发明专利

JPS6061709A COVERED OPTICAL FIBER 失效
公开(公告)号：JPS6061709A
公开(公告)日：1985-04-09
申请号：JP17018683
申请日：1983-09-14
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： NISHIMURA MASAO , KITAMURA AKIRA , HORI HISAKO , WADA NAOYUKI , ORIMO KATSUMI , INAGAKI NOBUO , KIMURA TAKAO
IPC分类号： C03C25/10 , G02B6/44
摘要： PURPOSE:To prevent an increase of a transmission loss caused by hydrogen of a covered layer of a quartz compound optical fiber by making the covered layer contain a compound having a reactivity to hydrogen. CONSTITUTION:In a covered optical fiber 10, a covered layer 4 is formed on the outside circumference of a covered layer 2. The covered layer 2 has one or both functions of primary coat and buffer coat, and the covered layer 4 has a protective function whose mechanical characteristic is excellent. When a prescribed compound is contained in the covered layer 2 and/or the covered layer 4, the prescribed compound reacts to hydrogen and comes to catch it, and accordingly, even if a lattice defect exists in an optical fiber, the caught hydrogen cannot invade into its optical fiber 1, by which an OH radical is not generated, therefore, a covered optical fiber whose transmission characteristic is stable is obtained extending over a long period of time in which an increase of a transmission loss is scarcely generated. As for the prescribed compound, namely, a compound having a reactivity to hydrogen, it is desirable to use that of a suit able material quality by adjusting it to a suitable quantity, and an organic peroxide can be exemplified. As for a content of the organic peroxide, 0.01- 5wt% is desirable against the covered layer containing it.

2. 发明专利

JPS62125304A CLAD OPTICAL FIBER 失效
公开(公告)号：JPS62125304A
公开(公告)日：1987-06-06
申请号：JP26667685
申请日：1985-11-27
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： NISHIMURA MASAO , KITAMURA AKIRA , KATO KOJI , SHINOHARA HIROMICHI
IPC分类号： C03C25/10 , G02B6/44
摘要： PURPOSE:To obtain clad optical fiber having high durability by providing a resin coated layer having >=50% breaking tensile elongation at room temp. as outermost layer of clad optical fiber. CONSTITUTION:A soft coating layer 12, a rigid coating layer 13, and an outermost resin coated layer 14 are provided to the external periphery of glass optical fiber 11. The rigid coating layer 13 comprises ultraviolet ray cured resin such as urethaneacrylate, and the Young's modulus of the rigid coating layer at room temp. is >=10kg/mm , pref. 10-100kg/mm . The resin coated layer 14 comprises a resin having higher breaking tensile elongation that the rigid coating layer 13. The breaking tensile elongation of the resin for the resin coated layer is >=50%, pref. >=70%. Suitable material for the resin coated layer 14 is in addition to ultraviolet ray cured resin, thermosetting resin such as epoxy resin, urethane resin, etc.

3. 发明专利

JPS6347205B2 失效
公开(公告)号：JPS6347205B2
公开(公告)日：1988-09-21
申请号：JP2079982
申请日：1982-02-12
申请人： FURUKAWA ELECTRIC CO LTD
发明人： KITAMURA AKIRA , NAKAMURA NOBUYUKI , KOMYAMA TOORU
IPC分类号： H01B3/42 , C08L67/00 , C08L67/02

4. 发明专利

JPS6325612B2 失效
公开(公告)号：JPS6325612B2
公开(公告)日：1988-05-26
申请号：JP17952780
申请日：1980-12-18
申请人： FURUKAWA ELECTRIC CO LTD
发明人： HORI HISAKO , KITAMURA AKIRA , SHIRAHATA ISAO , NAKAMURA NOBUYUKI
IPC分类号： C08J3/24 , C08G63/91 , C08K3/08 , C08K5/098

5. 发明专利

JPS63107845A ULTRAVIOLET-CURING COMPOSITION FOR OPTICAL FIBER 失效
公开(公告)号：JPS63107845A
公开(公告)日：1988-05-12
申请号：JP25084686
申请日：1986-10-23
申请人： FURUKAWA ELECTRIC CO LTD
发明人： KITAMURA AKIRA , NAKAMURA NOBUYUKI
IPC分类号： G02B6/44 , C03C25/24 , C08F2/48 , C08F20/10 , C08F20/12 , C08F20/20 , C08F20/28 , C08F220/10
摘要： PURPOSE:To obtain the titled compsn. capable of easily undergoing regulation on curing rate, coefft. of shrinkage by curing, and rate of water absorption by mixing an oligomer having ultraviolet reactive groups with monomers including dicyclopentenyl diacrylate and a photoreaction initiator. CONSTITUTION:The desired ultraviolet-curing compsn. for coating an optical fiber is obtd. by mixing 30-70pts.wt. oligomer (A) having 500-5,000mol.wt. and ultraviolet reactive groups in the molecule with 70-30pts.wt. monomers (B) including 5-30pts.wt. dicyclopentenyl diacrylate and a photoreaction initiator (C) such as benzophenon. The component (A) is obtd. by adding ultraviolet-curing reactive groups such as (meth)acrylic groups to a polyol component such as polyether polyol or polyester polyol with urethane or ester groups in-between.

6. 发明专利

JPS6250927B2 失效
公开(公告)号：JPS6250927B2
公开(公告)日：1987-10-27
申请号：JP3434980
申请日：1980-03-17
申请人： FURUKAWA ELECTRIC CO LTD
发明人： KITAMURA AKIRA , KOMYAMA TOORU , SANO BUNICHI
IPC分类号： C08F2/00 , C08F2/48 , C08F290/00 , C08F299/00 , C08F299/02 , C09D5/25 , H01B3/30 , H01B7/00 , H01B7/02 , H01B13/16

7. 发明专利

JPS621979B2 失效
公开(公告)号：JPS621979B2
公开(公告)日：1987-01-17
申请号：JP13821277
申请日：1977-11-17
申请人： FURUKAWA ELECTRIC CO LTD
发明人： KITAMURA AKIRA , SHIRAHATA ISAO , NAKAI MASANORI
IPC分类号： C09D5/25 , C09D5/00 , C09D167/00 , C09D179/08

8. 发明专利

JPS5950189B2 JPS5950189B2 - 失效
公开(公告)号：JPS5950189B2
公开(公告)日：1984-12-06
申请号：JP4005277
申请日：1977-04-08
申请人： Furukawa Electric Co Ltd
发明人： SHIOTANI SHIGEHARU , SHIRAHATA ISAO , KITAMURA AKIRA , NAKAMURA NOBUYUKI
IPC分类号： C08G73/00 , C08G73/16 , C09D5/25 , C09D179/08 , H01B3/30

9. 发明专利

JPS59130008A Insulated wire 失效
公开(公告)号：JPS59130008A
公开(公告)日：1984-07-26
申请号：JP544283
申请日：1983-01-17
申请人： Furukawa Electric Co Ltd
发明人： NAKAMURA NOBUYUKI , KITAMURA AKIRA , KOMIYAMA TOORU , SHIRAHATA ISAO
IPC分类号： H01B7/02 , H01B3/42

10. 发明专利

JPS58152307A INSULATED WIRE 失效
公开(公告)号：JPS58152307A
公开(公告)日：1983-09-09
申请号：JP3487782
申请日：1982-03-05
申请人： FURUKAWA ELECTRIC CO LTD
发明人： NAKAMURA NOBUYUKI , KITAMURA AKIRA , KOMIYAMA TOORU , SHIRAHATA ISAO
IPC分类号： H01B7/02

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