Manufacturing method for decreasing the cyclic oligomer content in polyester

摘要

The present invention relates to a manufacturing method for decreasing the cyclic oligomer content in polyester which effectively restrains the production of the cyclic oligomer in ester chips and further decreases the amount of regenerated cyclic oligomer at the melting process stage by adding the additive, during the process of manufacturing polyethylene terephthalate, with the following structure: