Process for the manufacture of a graded index plastic optical fibre

Production of a fiber optic polymer with an index gradient and a varying refractive index comprises using two vinyl or acrylate polymer compositions, one containing a vinyl or acrylate crosslinker Production of a fiber optic polymer with an index gradient and a refractive index varying continuously...

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Bibliographische Detailangaben
Hauptverfasser:	ANDRIEU, XAVIER, MORICHERE, DOMINIQUE, PASTOURET, ALAIN, PERRIN, BERNARD
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS MAKING GRANULES OR PREFORMS MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS METALLURGY MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING NATURAL OR ARTIFICIAL THREADS OR FIBRES OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SPINNING TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	Production of a fiber optic polymer with an index gradient and a varying refractive index comprises using two vinyl or acrylate polymer compositions, one containing a vinyl or acrylate crosslinker Production of a fiber optic polymer with an index gradient and a refractive index varying continuously from the center to the edge comprises diffusing two compositions of refractive index difference at least 0.005 and comprising a polymer of mol. wt. 1000-200,000 and containing at least one of vinyl and acrylate groups and one containing a crosslinker of mol. wt. 100-1000 and containing at least one of vinyl and acrylate groups, one of them being monofunctional and the other being at least bifunctional, and spinning. An Independent claim is included for the apparatus used in the above process and comprising a static mixer. Procédé de fabrication d'une fibre optique plastique (6) à gradient d'indice, de profil d'indice continu, à partir d' un polymère P particulier et d' un composé M1 particulier, ledit procédé comprenant : la préparation de deux compositions (13, 14) d'indice de réfraction différent, comprenant chacune au moins P, l'une comprenant aussi M1, un photo amorceur de réticulation étant présent dans une desdites compositions (13, 14), l'inter diffusion des compositions (13, 14), et * le filage des compositions (13, 14) de façon à obtenir la fibre (6), caractérisé en ce que : l'on procède en outre avant le filage au mélange actif des deux compositions (13, 14) à l'aide d'au moins un moyen de mélange (2, 16, 17, 26), et le filage de la fibre (6) est suivi d'une réticulation (7). Dispositif de mise en oeuvre dudit procédé en ce que le mélangeur utilisé est statique (1) ou dynamique (24).