Esterification of terephthalic acid with an alkylene glycol in t

Details Esterification of terephthalic acid with an alkylene glycol in t Esterification of terephthalic acid with an alkylene glycol in t

1976-06-30

1978-03-14

Danison, Walter C.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

8165, 8179, 260 75M, C08G 6368, C08G 6322

Patent

active

040790452

ABSTRACT:
The esterification of an aromatic dicarboxylic acid with an alkylene glycol containing 2 to 10 carbon atoms is described under conditions of direct esterification wherein the resultant polyester has low ether content. The dicarboxylic acid is esterified with the alkylene glycol in the presence of a compound of the formula ##STR1## wherein M is H, an alkali metal selected from the group consisting of lithium, sodium and potassium or an alkaline earth metal selected from the group calcium and magnesium.

REFERENCES:
patent: 3024220 (1962-03-01), Cramer
patent: 3035025 (1962-05-01), Broadhead et al.
patent: 3309222 (1967-03-01), Caldwell
patent: 3641111 (1972-02-01), Lazarus
Shima et al., Chemical Abstracts, vol. 76:128,676m (1972).
Hasegawa et al., Chemical Abstracts, vol. 65:10,559h (1966).

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