Adipic Acid → 5-Phenyl-2,4-pentadienoic acid

Participants

Reaction Steps

In a reaction vessel equipped with a condenser, a stirrer and a nitrogen inlet tube, 229 parts of ethylene oxide 2 mol adduct of bisphenol A, 529 parts of propylene oxide 3 mol adduct of bisphenol A, 208 parts of terephthalic acid, 46 parts of adipic acid, and 2 parts of dibutyltin oxide were added. The mixture was subjected to a reaction for 8 hours at 230° C. under normal pressure, and subsequently reacted for 5 hours under a reduced pressure of from 10 mmHg to 15 mmHg. Further, 44 parts of trimellitic anhydride were added thereto, and the mixture was reacted for 2 hours at 180° C. under normal pressure. Thus a [low-molecular weight polyester 1] was obtained. The [low-molecular weight polyester 1] was found to have a number average molecular weight of 2,500, a mass average molecular weight of 6,700, a glass transition temperature (Tg) of 43° C., an acid value of 25 mgKOH/g and an SP value of 10.8.

Provenance & Evidence