Liquid Modified PET Polyester for Lithographic Printing Ink

摘要

The present invention relates to a method of producing a liquid polyester resin and the liquid polyester resin produced by the method. A liquid polyester resin comprises depolymerizing virgin, scrap, recycled or regenerated polyethylene terephthalate (PET) through alcoholysis reaction with one or more monoalcohols and / or polyols, and using the obtained polyol oligomer as a vegetable oil Alternatively, it is prepared by transesterification with a fatty acid alkyl ester and repolymerization with an acid or an anhydride. The invention also provides inks and coating compositions, and overprint varnishes, comprising the liquid polyester resins of the invention.