METHOD FOR MANUFACTURING LIQUID CRYSTAL POLYESTER MOLDED BODIES

• Main Authors: HARA TOMOYUKI, MATSUMI YASUO, MAEDA MITSUO
• Format: Patent
• Language: English; French; Japanese
• Published: 27.09.2012
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The present invention pertains to a method for manufacturing liquid crystal polyester molded bodies, said liquid crystal polyester having repeating units represented by general formulas (1), (2) and (3). The method for manufacturing liquid crystal polyester molded bodies comprises: a step for carrying out melt filtering using a filter after melt extrusion has been carried out on the liquid crystal polyester; and a step for forming the liquid crystal polyester using an injection molding machine after drying the liquid crystal polyester. The filtration precision of the filter is 1 to 50 µm. L'invention concerne un procédé de fabrication de corps moulé en polyester cristallin. Ledit polyester cristallin possède des unités répétitives représentées par les formules générales (1), (2) et (3). Ce procédé de fabrication de corps moulé en polyester cristallin comporte : une étape de filtrage de matière fondue à l'aide d'un filtre, après extrusion de matière fondue de polyester cristallin; et une étape de moulage du polyester cristallin à l'aide d'une presse à mouler par injection, après séchage du polyester cristallin. Plus précisément, l'invention concerne un procédé de fabrication de corps moulé en polyester cristallin dans lequel la précision de filtrage dudit filtre est de 1 à 50µm.