POLYMERIZATION APPARATUS FOR PRODUCING AROMATIC POLYCARBONATE

Title:

POLYMERIZATION APPARATUS FOR PRODUCING AROMATIC POLYCARBONATE

Document Type and Number:

WIPO Patent Application WO/2005/123805

Kind Code:

A1

Abstract:

This invention provides a polymerizer and polymerization equipment for producing an aromatic polycarbonate by melt transesterification from a molten prepolymer, of the aromatic polycarbonate, produced from an aromatic dihydroxy compound and a diaryl carbonate. According to the polymerizer and polymerization equipment, a high-quality, high-performance aromatic polycarbonate free from coloring and having excellent mechanical properties can be produced on a commercial scale of not less than 1 ton and not more than 50 tons per hour stably for a long period of time, specifically for several thousands of hours or longer, for example, 5,000 hours, without a variation in molecular weight and the like. The polymerizer is of a guide contact flow-down-type, in which polymerization is carried out while flowing down a molten prepolymer along a guide, and has a specific structure. The polymerization equipment comprises a plurality of guide contact flow-down-type polymerizers having the above specific structure.

Inventors:

FUKUOKA SHINSUKE (JP)
HACHIYA HIROSHI (JP)
MATSUZAKI KAZUHIKO (JP)

Application Number:

PCT/JP2005/011029

Publication Date:

December 29, 2005

Filing Date:

June 16, 2005

Export Citation:

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Assignee:

ASAHI KASEI CHEMICALS CORP (JP)
FUKUOKA SHINSUKE (JP)
HACHIYA HIROSHI (JP)
MATSUZAKI KAZUHIKO (JP)

International Classes:

B01J14/00; B01J19/24; B01J19/32; C08G64/30; (IPC1-7): C08G64/30; B01J14/00; B01J19/24

Domestic Patent References:

WO1999065970A1	1999-12-23
WO1999036457A1	1999-07-22
WO1999064492A1	1999-12-16
WO1997022650A1	1997-06-26

Foreign References:

JP2004211107A

2004-07-29

Other References: