Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1987-04-27
1988-07-19
Kight, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
5283085, 528483, 528501, C08G 6302
Patent
active
047586508
ABSTRACT:
A process and an apparatus for the production of high molecular weight linear polyester is proposed, in which a pumpable material is produced in particular terephthalic acid and an alkaline diol which is esterified in a two or multi-stage reactor arrangement and is subsequently condensed in vacuo in at least one vacuum reactor. The waste heat of the esterification reactor arrangement is used for producing the vacuum in the vacuum reactors. The water for condensing the steam is also obtained from the process steam.
REFERENCES:
patent: 3689461 (1972-09-01), Balint et al.
patent: 3819585 (1974-06-01), Funk et al.
patent: 4382139 (1983-05-01), Kapteina et al.
Acquah S. A.
Karl Fischer Industrieanlagen GmbH
Kight John
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