Adipic Acid → Ethylene Oxide

Participants

Reaction Steps

An adduct of bisphenol A with 2 mols of propylene oxide, 1,3-propylene glycol, terephtaric acid, and adipic acid were placed in a reaction container equipped with a thermocouple, a stirrer, a dewatering tube, and a nitrogen-introducing tube in such a manner that the molar ratio ([OH]/[COOH]) of a hydroxy group to a carboxylic group was 1.4. Diol was formed of 90% by mol of bisphenol A with 2 mols of ethylene oxide and 10% by mol of 1,3-propylene glycol. Dicarboxylic acid was formed of 80% by mol of terephtaric acid and 20% by mol of adipic acid. 500 ppm of titanium tetraisopropoxide was added to all of the monomers. Next, reaction was conducted at 230° C. for eight hours and continued with a reduced pressure of from 10 mmHg to 15 mmHG for four hours. Furthermore, trilmellitic anhydride was added to be 1% by mol to the total of monomers followed by three hour reaction at 180° C. to obtain [Linear non-crystalline polyester E-2]. [Linear non-crystalline polyester E-2] had a weight average molecular weight of 5,600 and a glass transition temperature of 61° C.

Provenance & Evidence