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61. 发明专利

JPH04291307A FERRULE OF CONNECTOR OF OPTICAL CABLE 失效
公开(公告)号：JPH04291307A
公开(公告)日：1992-10-15
申请号：JP8145291
申请日：1991-03-20
申请人： FURUKAWA ELECTRIC CO LTD
发明人： SUSA MARIKO , NISHIMURA MASAO , MUKASA YOSHIYASU , MORIGUCHI AKIRA
IPC分类号： G02B6/36
摘要： PURPOSE:To offer a ferrule of connector of optical cable which is not necessary to assemble with a sleeve and a flange. CONSTITUTION:A sleeve 4 through which a naked fiber part 3 of an optical fiber cable 1 is inserted and fixed and a flange 6 made of a same material with sleeve and in which a coated part 5 of the optical fiber fable 1 is inserted and fixed are formed integrally, and a through hole 11 of the sleeve 4 and the inserting hole 12 of the flange 6 are aligned continuously on the same axis line.

62. 发明专利

JPH0250063B2 失效
公开(公告)号：JPH0250063B2
公开(公告)日：1990-11-01
申请号：JP864682
申请日：1982-01-22
申请人： FURUKAWA ELECTRIC CO LTD
发明人： IINO AKIRA , NISHIMURA MASAO , NISHIMOTO MASAYUKI , FURUI YASURO
IPC分类号： C03C3/06 , C03C13/04 , C03C25/10 , G02B6/00

63. 发明专利

JPS63270719A ULTRAVIOLET-CURABLE RESIN COMPOSITION 失效
公开(公告)号：JPS63270719A
公开(公告)日：1988-11-08
申请号：JP10435487
申请日：1987-04-30
申请人： YOKOHAMA RUBBER CO LTD , FURUKAWA ELECTRIC CO LTD
发明人： TAKEYAMA SHUICHI , OHASHI YOSHINOBU , OKAGAWA SHUJI , NISHIMOTO MASAYUKI , NISHIMURA MASAO
IPC分类号： C08J3/28 , C03C25/24 , C08F2/48 , C08F20/10 , C08F20/34 , C08F20/52 , C08F220/18 , C08F220/28 , C08F220/36 , C08F220/58 , C08F290/00 , C08F290/06 , C08F299/00 , C09D175/14 , C09D175/16
摘要： PURPOSE:To obtain the title composition which can give a cured product of high modulus, high elongation, low water absorptivity and low viscosity, by mixing urethane acrylate with a specified isocyanurate or both of this compound and a diacrylate and further mixing this mixture with a specified compound. CONSTITUTION:The title composition is prepared by mixing 100pts.wt. urethane acrylate obtained by reacting both terminals of polytetramethylene glycol of an MW of 650-1,300 with hydrogenated 4,4'-diphenylmethane diisocyanate and further reacting the product with a compound having both hydroxyl and acryloyl groups in the molecule with 10-140pts.wt. tris(2-acryloxyethyl) isocyanurate or both of a compound of formula I and a diacrylate of formula II and further mixing the product with 1-40pts.wt. at least one member selected from acryloylmolpholine and dicyclopentanyl acrylate of formula IV. This composition can give a cured product of high modulus, high elongation, low water absorptivity and low viscosity, and is useful as, especially, a secondary coating material for fibers.

64. 发明专利

JPS6372740A ULTRAVIOLET-CURING RESIN COMPOSITION 失效
公开(公告)号：JPS6372740A
公开(公告)日：1988-04-02
申请号：JP21587486
申请日：1986-09-16
申请人： YOKOHAMA RUBBER CO LTD , FURUKAWA ELECTRIC CO LTD
发明人： OHASHI YOSHINOBU , WATANABE HIDEO , KAGEYAMA KUNIO , TAKEYAMA SHUICHI , NISHIMOTO MASAYUKI , OKAGAWA SHUJI , NISHIMURA MASAO
IPC分类号： C08K5/51
摘要： PURPOSE:To provide the title compsn. which gives a coated optical fiber having excellent transmission loss characteristics, is suitable for use in coating optical fibers and scarcely emits H2 gas, by adding a phosphorus compd. to a resin compsn. CONSTITUTION:An ultraviolet-curing resin compsn. (A) is prepd. from an oligomer (a) having polymerizable carton-to-carbon bonds at the terminals of its polymer chain [e.g., urethane (meth)acrylate], a compdn. (b) having at least one polymerizable carbon-to-carbon bond per molecule [e.g., phenoxy (meth) acrylate] and a photopolymerization initiator (c) (e.g., benzoin methol ether). 100pts.wt. component A is blended with 0.1-3.0pts.wt. phosphorus compd. (B) such as diphenyl indecyl phosphite.

65. 发明专利

JPS6327518A ULTRAVIOLET CURING TYPE RESIN COMPOSITION 失效
公开(公告)号：JPS6327518A
公开(公告)日：1988-02-05
申请号：JP16977286
申请日：1986-07-21
申请人： YOKOHAMA RUBBER CO LTD , FURUKAWA ELECTRIC CO LTD
发明人： TAKEYAMA SHUICHI , OHASHI YOSHINOBU , OKAGAWA SHUJI , NISHIMOTO MASAYUKI , NISHIMURA MASAO
IPC分类号： C08F2/48 , C08F290/00 , C08F299/02 , C08F299/06
摘要： PURPOSE:The titled composition, obtained by blending a specific urethane acrylate with a specific isocyanurate, etc., capable of giving a cured article, useful as a secondary coating material for optical fibers and having a high elastic modulus and elongation as well as low water absorption and viscosity with a high curing rate. CONSTITUTION:A composition obtained by initially reacting hydrogenated 4,4'- diphenylmethane diisocyanate with both terminals of a polytetramethylene glycol having 650-1,300 molecular weight, reacting a compound containing OH group and acryloyl group, e.g. 2-hydroxyethyl acrylate, etc., therewith to give an urethane acrylate and blending 100pts.wt. resultant urethane acrylate with 10-140pts.wt. tris(2-acryloxyethyl) isocyanurate alone or compound expressed by formula I and diacrylate expressed by formula II.

66. 发明专利

JPS60263109A MANUFACTURE OF OPTICAL TAPE TYPE UNIT 失效
公开(公告)号：JPS60263109A
公开(公告)日：1985-12-26
申请号：JP11962184
申请日：1984-06-11
申请人： FURUKAWA ELECTRIC CO LTD
发明人： TAKAHASHI FUMIO , OOMAE KAZUYA , NISHIMURA MASAO , KOKAYU MIKIO
IPC分类号： H01B11/00 , G02B6/44
摘要： PURPOSE:To obtain the unit having no defect in external appearance by coating optical fiber element wires with ultraviolet-ray setting type resin in a fused state as a protection layer individually in advance and forming them into one tape through a die, and irradiating the resin with ultraviolet rays and setting the resin. CONSTITUTION:The optical fiber element wires 3 formed by providing optical fibers 1 with coating layers 2 made of ultraviolet-ray setting type resin are supplied from bobbins 10, 10... and arrayed in parallel on the same plane through a guide roll 11 at sufficient intervals; and a resin coating jig 17 is used to coat each fiber element wire 3 sufficiently and previously with ultraviolet-ray setting resin which is supplied in a fused state from a material supply tank 12. Then, excessive resin is removed by the die 13 to form all wires in one body to specific size, and the resin in the fused state is irradiated with ultraviolet rays from an ultraviolet lamp 14 and set to form the protection layer 4, and resulting tape- shaped unit is drawn by a drawing machine 15 and taken up by a take-up machine 16.

67. 发明专利

JPS60235748A COATING OF OPTICAL FIBER 失效
公开(公告)号：JPS60235748A
公开(公告)日：1985-11-22
申请号：JP8951984
申请日：1984-05-07
申请人： FURUKAWA ELECTRIC CO LTD
发明人： NISHIMURA MASAO , NISHIMOTO MASAYUKI , OKAGAWA SHIYUUJI
IPC分类号： C03C25/10 , G02B6/44
摘要： PURPOSE:To form a uniform coating layer having low transmission loss, by applying a gas stream flowing along the running direction of the optical fiber to the circumference of the uncured coating layer in the coating of an optical fiber with a layer of an ultraviolet-curing resin. CONSTITUTION:The optical fiber 12 is coated with an ultraviolet-curing resin by the coating means 16 in the coating apparatus 10. The uncured coating layer 14 on the optical fiber 12 is irradiated with ultraviolet radiation by the ultraviolet radiation means 18 to obtain the cured coating layer 14'. In the above process, a vessel 22 is inserted between the coating means 16 and the ultraviolet radiation means 18, and a gas stream 20 flowing along the running direction of the optical fiber is formed around the optical fiber 12. The speed of the gas stream is made higher than the running speed of the optical fiber 12, and the gas is cooled beforehand. Since the uncured coating layer 14 is shielded from the high-temperature of the ultraviolet radiation means 18 by the gas stream 20, the fluidity increase of the uncured coating material can be prevented, the formed coating layer 14' can be uniformized, and the residual strain can be lowered.

68. 发明专利

JPS60235734A METHOD FOR TREATING QUARTZ BASED POROUS GLASS LAYER 失效
公开(公告)号：JPS60235734A
公开(公告)日：1985-11-22
申请号：JP8883884
申请日：1984-05-02
申请人： FURUKAWA ELECTRIC CO LTD
发明人： YOSHIDA KAZUAKI , NISHIMURA MASAO , KUROBA TOSHIAKI , KAMIYA TAMOTSU
IPC分类号： C03B8/04 , C03B20/00 , C03B37/014 , G02B6/00
摘要： PURPOSE:To dope a glass layer with a required and sufficient amount of fluorine, by heating the titled glass layer doped with a metal oxide easily forming glass together with SiO2, and having low evaporation property in a fluoride state in a fluorine-containing atmosphere. CONSTITUTION:For example, a quartz based porous glass layer is manufactured by the vapor-phase axial deposition (VAD) method. Vapor-phase glass raw material SiCl4, O2 and H2 and vapor-phase glass raw material SiCl4 and vapor-phase doping raw material AlCl3, O2 and H2 are fed respectively to the respective gas flow paths of burners 3 and 4. The respective fine glass particles (soot form) produced in flame hydrolytic reaction thereof are deposited as shown in the figure to form a porous glass rod 1 and porous glass layer 2. The rod 1 consists of pure SiO2, and the layer 2 consists of SiO2 and dopant of Al2O3. The resultant porous base material is heat-treated in a fluorine-containing atmosphere to dope the layer 2 with a considerable amount of fluorine since the layer 2 is not easily evaporated in the state of fluoride and contains SiO2 and easily vitrifiable dopant.

69. 发明专利

JPS6071535A PRODUCTION OF PARENT MATERIAL FOR OPTICAL FIBER 失效
公开(公告)号：JPS6071535A
公开(公告)日：1985-04-23
申请号：JP17766783
申请日：1983-09-26
申请人： FURUKAWA ELECTRIC CO LTD
发明人： YOSHIDA KAZUAKI , NISHIMURA MASAO , KATOU KOUJI , IINO AKIRA
IPC分类号： C03B37/018 , C03B37/014 , G02B6/00
摘要： PURPOSE:To produce a parent material for optical fiber having superior strength by forming a layer of porous glass by depositing the porous glass to the external periphery of a glass rod comprising core glass and clad glass, and converting the layer to transparent body by heating without performing dehydration. CONSTITUTION:SiCl4 as raw material gas, H2 as combustion gas, O2 as combustion suporting gas, and inert gas as buffer gas are fed from a burner 14 moving reciprocally in the longitudinal direction of a glass bar 1 while rotating the glass bar comprising core glass 2 and clad glass 3 by supporting both ends of the glass bar 1 with a chuck 15 is a vessel 11. Fine glass particles formed by the flame hydrolysis of the gases are deposited on the external periphery of the glass bar 1 to form a porous glass layer 4. Clean air contg. =0.3mum particle size per 1l air or inert gas, etc. is introduced as the atmosphere in the vessel 11. the porous glass layer 4 is heated at 1,300-1,600 deg.C to convert it to a transparent glass layer 5, thus, a parent material for producing optical fiber having superior strength is obtd.

70. 发明专利

JPS59227746A APPARATUS FOR COATING OPTICAL FIBER 失效
公开(公告)号：JPS59227746A
公开(公告)日：1984-12-21
申请号：JP10214983
申请日：1983-06-08
申请人： FURUKAWA ELECTRIC CO LTD
发明人： NISHIMURA MASAO , KATOU KOUJI , NISHIMOTO MASAYUKI
IPC分类号： C03C25/12 , G02B6/44 , C03C25/02 , G02B5/14
摘要： PURPOSE:To prevent the deterioration of strength of optical fibers, by forming a flow channel of a coating material in a gap between a nipple for passing optical fibers are freely therethrough in the interior of a die for supplying the coating material, and attaching a heat shrinkable tube at the tip of the nipple positioned on the outlet side of the coating material in the die. CONSTITUTION:An apparatus for coating a coating material 10 on the outer periphery of an optical fiber 16 having a nipple 13 for passing the optical fiber 16 freely therethrough in the interior of a die 12 to which the coating material 10 is supplied. A flow channel (C) of the coating material 10 is formed between the die 12 and the nipple 13, and a heat shrinkable tube 15 capable of shrinking by heating is attached to the tip of the nipple 13 positioned at the outlet side of the coating material 10 in the die 12. The heat shrinkable tube 15 consists of two inner and outer layers (15a) and (15b), and the inner layer (15a) consists of a thermoplastic resin. The outer layer (15b) consists of a heat shrinkable material.

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