HQEE also called Hydroquinon bis(2-hydroxyethyl)ether. It is mainly used as a chain extender of polyurethane elastomers, and can be used as a crosslinking agent of mixed, cast and thermoplastic polyurethane elastomers, which can improve the stability of products, improve the tearing strength, heat resistance, hardness, resilience, compression deformation and other physical properties. Especially can be used in MDI series products, with MDI has a good compatibility, can effectively extend the life of the kettle, easy to operate.