PROCESS FOR PRODUCING ACRYLONITRILE-BASED POLYMER SOLUTION, SHEARING DEVICE, PROCESS FOR PRODUCING ACRYLONITRILE-BASED FIBER, AND PROCESS FOR PRODUCING CARBON FIBER

A process for producing an acrylonitrile-based polymer solution is provided with which it is possible to evenly and efficiently dissolve an acrylonitrile-based polymer in a solvent, inhibit the filter or spinning nozzle from clogging, and stably produce an acrylonitrile-based polymer solution. The p...

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Bibliographische Detailangaben
Hauptverfasser:	TOMOBE, HITOSHI, MAENO, KAZUHIRO
Format:	Patent
Sprache:	eng ; fre ; jpn
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G 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 GENERAL PROCESSES OF COMPOUNDING 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 ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL 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 WORKING-UP
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Beschreibung
Zusammenfassung:	A process for producing an acrylonitrile-based polymer solution is provided with which it is possible to evenly and efficiently dissolve an acrylonitrile-based polymer in a solvent, inhibit the filter or spinning nozzle from clogging, and stably produce an acrylonitrile-based polymer solution. The process for producing an acrylonitrile-based polymer solution comprises supplying a mixture of the polymer and a solvent to the dispersion chamber of a shearing device comprising a cylinder and a rotor that rotates inside the cylinder, rotating the rotor under the following conditions to apply shear force to the mixture, and thereafter heating the obtained mixture to obtain an acrylonitrile-based polymer solution. W=(W1-W2)/M>=0.12 (kWh/kg). W1, W2, and M are defined in the description. Alternatively, the conditions may be changed so that W>=1.60, and the heating may be omitted. La présente invention concerne un procédé pour produire une solution de polymère à base d'acrylonitrile avec laquelle il est possible de dissoudre uniformément et efficacement un polymère à base d'acrylonitrile dans un solvant, empêcher le filtre ou la buse de filage de se boucher, et produire de façon stable une solution de polymère à base d'acrylonitrile. Le procédé pour produire une solution de polymère à base d'acrylonitrile comprend la fourniture d'un mélange du polymère et d'un solvant dans la chambre de dispersion d'un dispositif de cisaillement comprenant un cylindre et un rotor qui tourne à l'intérieur du cylindre, faisant tourner le rotor dans les conditions suivantes pour appliquer une force de cisaillement au mélange, et ensuite le chauffage du mélange obtenu pour obtenir une solution de polymère à base d'acrylonitrile. W=(W1-W2)/M >= 0,12 (kWh/kg). W1, W2, et M sont définis dans la description. En variante, les conditions peuvent être modifiées de sorte que W >= 1,60, et le chauffage peut être omis.