It is used as a comonomer for polyacrylonitrile fibers, and can also be used to prepare plasticizers, lubricating oil additives, etc. It is an important monomer Chemicalbook for the preparation of synthetic fibers, synthetic resins and plastics, and ion exchange resins; it can also be used as a lining agent for carpets, a coating agent for paper, a binder, and dispersion latex for paints. Ester derivatives of itaconic acid can be used for Plasticizer for copolymerization of styrene, etc. or polyvinyl chloride.