MANUFACTURING PROCESS OF FLAKED DIARYL CARBONATE AND METHOD OF HANDLING FLAKED DIARYL CARBONATE

PROBLEM TO BE SOLVED: To provide a method of manufacturing flaked diaryl carbonate by which molten diaryl carbonate is flaked. SOLUTION: Molten DPC is cooled and solidified on the surface of rotary drum 20a of flaker 20. The solidified DPC is scraped with scraper 21. The flaked DPC obtained is trans...

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Hauptverfasser:	HYODO NARUTOSHI, HISAMA SEIJI, URASHIMA HIDETOSHI, YOSHINO TAKASHI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS MAKING GRANULES OR PREFORMS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS THEIR RELEVANT APPARATUS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method of manufacturing flaked diaryl carbonate by which molten diaryl carbonate is flaked. SOLUTION: Molten DPC is cooled and solidified on the surface of rotary drum 20a of flaker 20. The solidified DPC is scraped with scraper 21. The flaked DPC obtained is transferred to hopper 23 via transfer pipe 22 and packed into container (F/C) 24b already filled with inert gas 4NP by packing machine 24. Rotary drum 20a is cooled by refrigerant (CW) having a temperature of 0°C-30°C and cools and solidifies the molten DPC to a temperature below 60°C. The clearance between the tip of scraper 21 and the surface of rotary drum 20a is not greater than 0.5 mm. The transfer pipe 22 having an inner surface roughness (Ra) of not greater than 1 μm is installed at an angle of 45° to the vertical direction. COPYRIGHT: (C)2009,JPO&INPIT