PROCESS AND CATALYST-INHIBITOR SYSTEMS FOR PREPARING SYNTHETIC LINEAR POLYESTERS

摘要

Catalyst system for the polymerization of poly(ethylene terephthalate) having excellent properties for fabrication of fibers and films. The catalyst system comprises a combination of organic or inorganic salts of manganese and cobalt with titanium alkoxides, organic salts of alkali metals or alkaline earth metals. Phosphate esters can be used with the catalyst to serve as a color stabilizer for the poly (ethylene terephthalate).