Atomospheric pressure polyester process

Details Atomospheric pressure polyester process Atomospheric pressure polyester process

1995-05-10

1996-09-03

Acquah, Samuel A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528272, 528274, 528279, 528283, 528285, 528302, 528308, 5283086, 528481, 528489, 528491, 528492, 528503, C08G 6300

Patent

active

055525130

ABSTRACT:
An atmospheric pressure process for the continuous production of polyester is disclosed wherein a melt of dihydroxy ethyl terephthalate, or its low molecular oligomers, obtained by esterifying terephthalic acid or transesterifying dimethyl terephthalate with ethylene glycol, is intimately contacted with an inert gas to facilitate polymerization and removal of the reaction by-products. The ethylene glycol evolved and the inert gas are recycled.

REFERENCES:
patent: 2578660 (1951-12-01), Auspos et al.
patent: 2647885 (1953-08-01), Billica
patent: 2789972 (1957-04-01), Reynolds et al.
patent: 2973341 (1961-02-01), Hippe et al.
patent: 3110547 (1963-11-01), Emmert
patent: 3390135 (1968-06-01), Seiner
patent: 3469618 (1969-09-01), Siclari et al.
patent: 3545520 (1970-12-01), Siclari et al.
patent: 4835293 (1989-05-01), Bhatia

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