Title:
MANUFACTURING APPARATUS AND METHOD FOR POLYBUTYLENE TEREPHTHALATE OLIGOMER
Document Type and Number:
Japanese Patent JP3812577
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method for a polybutylene terephthalate oligomer which reduces a foreign substance and an unreacted material while raising an esterification reaction rate and controlling a side reaction.
SOLUTION: This apparatus is a continuously manufacturing apparatus for the polybutylene terephthalate oligomer by reacting a dicarboxylic acid comprising terephthalic acid as a principal component and a diol comprising 1,4-butanediol as a principal component which comprises (1) having a heat exchanger inside a reactor, (2) in at least one of horizontal sections in the reactor, installing the heat exchanger in the vicinity of a peripheral area, and having a space without the heat exchanger in the vicinity of a central part, and (3) installing a funnel shape wall becoming smaller in diameter from an upper part toward a lower part in an upper part of the space of the above (2).
Inventors:
Horiguchi Akio
Toshiyuki Hamano
Yamamoto Regular
Toshiyuki Hamano
Yamamoto Regular
Application Number:
JP2004252627A
Publication Date:
August 23, 2006
Filing Date:
August 31, 2004
Export Citation:
Assignee:
Mitsubishi Chemical Corporation
International Classes:
C08G63/78; (IPC1-7): C08G63/78
Domestic Patent References:
| JP2001232101A | ||||
| JP10259241A | ||||
| JP11333201A | ||||
| JP2000327762A | ||||
| JP64075891A |
Attorney, Agent or Firm:
Hasegawa Soji
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