PHOTOCURABLE RESIN COMPOSITION AND OPTICAL FIBER UNIT OBTAINED USING THE SAME

PROBLEM TO BE SOLVED: To provide an optical fiber unit excellent in water-loss characteristics, having a low viscosity enough to permit excellently rapid processing and excellent also in rapid curability, and a photocurable resin composition used therefor. SOLUTION: The photocurable resin compositio...

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Bibliographische Detailangaben
Hauptverfasser:	OSHIO ATSUSHI, SAITO OSAMU, MESHII MASAHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES FILLING PASTES GLASS INKS JOINING GLASS TO GLASS OR OTHER MATERIALS MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY MINERAL OR SLAG WOOL MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PHYSICS POLISHES SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an optical fiber unit excellent in water-loss characteristics, having a low viscosity enough to permit excellently rapid processing and excellent also in rapid curability, and a photocurable resin composition used therefor. SOLUTION: The photocurable resin composition comprises, as radically polymerizable oligomers (X), (1) 20-55 wt%, based on the whole composition, of a urethane acrylate (X-1) having a number-average molecular weight of 1,700-3,500 and (2) 10-45 wt%, based on the whole composition, of a urethane acrylate (X-2) having a number-average molecular weight of 300-1,500, and as radically polymerizable monomers (Y), (3) 15-40 wt.%, based on the whole composition, of a bifunctional monomer (Y-1) of a molecular weight of 300-800 having a cyclic structure and bearing at least two ether bonds in the molecule, and (4) 5-30 wt.%, based on the whole composition, of a monofunctional monomer (Y-2) giving a homopolymer having a glass transition temperature of 50 deg.C or higher.