METHOD OF PRODUCING POLYESTER PRODUCT FROM ALKYLENE OXIDE AND CARBOXYLIC ACID Russian patent published in 2009 - IPC C08G63/78 C08G63/183 C08G63/81 C07C67/26 C07C51/00 C07C69/03 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing polyester product from ethylene oxide and carboxylic acid. A method is described for producing polyethyleneterephthalate, involving bringing terephthalic acid into contact with ethylene oxide in a reactor in the presence of a solvent and base catalyst, obtaining partially esterified terephthalic acid, where the said ethylene oxide and terephthalic acid are taken in molar ratio of ranging from 0.5:1 to less than 1:1, and subsequent reaction of the said partially esterified terephthalic acid with a diol, obtaining the end product.

EFFECT: obtaining end product using simple technology with conversion of about 96%.

61 cl, 5 tbl, 3 ex