Method for producing polyesters and a disk ring reactor for...

Details Method for producing polyesters and a disk ring reactor for... Method for producing polyesters and a disk ring reactor for...

2005-10-20

2009-06-23

Griffin, Walter D (Department: 1797)

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Organic polymerization

C422S131000, C526S068000, C528S308100

Reexamination Certificate

active

07550116

ABSTRACT:
The invention relates to a method and a device for producing polyesters such as for example polyethylene terephthalate, polypropylene terephthalate and polybutylene terephthalate from precondensates. According to said method, vapors comprising precondensate components that are distributed therein in the form of an aerosol are guided through a polycondensation reactor in which precondensate components condense on the reactor wall and on a separator in an exit chamber of the reactor. The condensates are guided to the unstirred discharge sump and the upper layers of the discharge sump are continuously recirculated into the stirred reactor area thereby subjecting them to reconversion and additional polycondensation.

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patent: 5599507 (1997-02-01), Shaw et al.
patent: 5779986 (1998-07-01), vanEndert
patent: 4447422 (1996-07-01), None
patent: 10235383 (2003-12-01), None
patent: 1 386 659 (2004-02-01), None
patent: 1435767 (1976-05-01), None

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