Process for the production of polyesters

Details Process for the production of polyesters Process for the production of polyesters

1981-06-15

1982-07-13

Phynes, Lucille M.

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

Synthetic resins

From carboxylic acid or derivative thereof

528274, C08G 6302

Patent

active

043395708

ABSTRACT:
In the production of polyesters by introduction of precondensates on to a first plate of a column reactor product quality is improved and operating time is increased in that spontaneous flash evaporation of the precondensate takes place in a so-called entry box, before the introduction on to the first plate of the column reactor, and in that separation of the liquid component from the gaseous component is subsequently carried out by centrifugal force in a so-called annular chamber.

REFERENCES:
patent: 3359074 (1967-12-01), Dobo
patent: 3402023 (1968-09-01), Dobo
patent: 3644294 (1972-02-01), Siclari et al.
patent: 4100142 (1978-07-01), Schaefer et al.

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