Process and apparatus for continuous polycondensation

Details Process and apparatus for continuous polycondensation Process and apparatus for continuous polycondensation

2000-02-23

2008-10-07

Leung, Jennifer A (Department: 1797)

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Organic polymerization

C422S134000, C422S137000, C422S225000, C366S315000, C366S317000, C366S312000, C528S308000

Reexamination Certificate

active

07431893

ABSTRACT:
An apparatus for continuously producing polyester comprises three single reactors, i.e. a single esterification reactor (first reactor), a single initial polymerization reactor (second reactor) and a single final polymerization reactor (third reactor or final polymerizer), where at least one of the first reactor and the second reactor is free from an external stirring power source, or the third reactor is a horizontal, one-shaft-type, low speed rotation type reactor. Necessary number of reactors for the esterification and polycondensation reactions can be a minimum and necessary stirring power consumption for the reaction can be a minimum, and thus polyester polymers of good quality can be efficiently produced at a minimum energy cost in a necessary minimum reactor structure.

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