METHOD TO DECREASE THE ACETALDEHYDE CONTENT OF MELT-PROCESSED POLYESTERS, A POLYESTER ARTICLE, A METHOD FOR MAKING THEREOF AND A COMPOSITION FOR MAKING THEREOF

摘要

A method for decreasing acetaldehyde content of melt processed polyester comprising combining with polyester an organic additive compound that scavenges acetaldehyde from polyester. The organic additive compound comprises at least two component molecular fragments, each component molecular fragment comprising at least two hydrogen substituted heteroatoms bonded to carbons of the respective component molecular fragment. Each component molecular fragment is reactive with acetaldehyde in the polyester to form water and a resulting organic compound comprising an unbridged five or six member ring including the at least two heteroatoms. A polyester article. A method for making thereof. A polyester composition with reduced acetaldehyde content which is particularly useful for making containers such as for packaging beverages.