Explanation
A kind of linear unsaturated polyester resin with bisphenol A repeating unit in macromolecule chain is prepared by addition of bisphenol A with ethylene (propylene) oxide, and polycondensation with maleic (trans) butanedioic acid (anhydride), ethylene glycol or propylene glycol. See unsaturated polyester resin
Classification
Organic polymer materials -> Plastics