Epoxy resin wani nau'in nau'in nau'in nau'in ƙwayar cuta ne na thermosetting na roba wanda aka samo shi daga yanayin ƙungiyar epoxide ko oxirane tare da polyamine ko polyol hardener. Abu ne mai ɗorewa da haɓakawa wanda aka yi amfani da shi a cikin aikace-aikacen da yawa, gami da adhesives, sutura, da abubuwan haɗin gwiwa. Epoxy resin yana da kyawawan kaddarorin inji, lantarki, da sinadarai, kuma an san shi da ikonsa na iya haɗawa da ƙarfi ga sassa iri-iri, gami da karafa, robobi, da itace.