AGITATING DEVICE AND PREPARATION OF POLYCARBONATE USING AGITATING DEVICE

PROBLEM TO BE SOLVED: To prepare polycarbonate continuously while maintaining the product quality at low operation cost by forming two different kinds of screw-shaped channels in the carrying direction on rotating shafts in shaft sealing sections and setting thereon tubes for extracting liquid from...

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Bibliographische Detailangaben
Hauptverfasser:	SHIMONARI MASASHI, UENISHI KAZUHIRO, NOGATA MICHIAKI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To prepare polycarbonate continuously while maintaining the product quality at low operation cost by forming two different kinds of screw-shaped channels in the carrying direction on rotating shafts in shaft sealing sections and setting thereon tubes for extracting liquid from the boundary of the channels. SOLUTION: A container 1 is of the shape connecting two cylindrical walls with rotating shaft 2 and 3 as their centers, and two different kinds of screw-shaped channels are formed in the carrying direction on the rotating shafts 2 and 3. Polymer extraction tubes 50-53 are set on a boundary of two kinds of screw. Polymers infiltrated between the rotating shafts of shaft sealing sections and a nozzle inner wall can be discharged out in a good manner without residues therein to prevent the deterioration of the polymers and the reverse flow into the device as above-mentioned. For the purpose of further polymerizing polycarbonate prepared by melt polymerizing an aromatic dihydroxy compound with diester carbonate, the above-said device is suitably used. The device is provided with high mixing properties and heat transfer properties and the generation of residual polymers is prevented positively, and the deterioration of quality generated by the residual polymers in the device can be prevented.