Diisocyanates are organic compounds characterised by two isocyanate functional groups, essential in the production of polyurethanes. They react with polyols to form polymeric chains, offering variability in the final properties of the polyurethane. polymersuch as elasticity, strength and durability. They are fundamental in the synthesis of foams, elastomers and resins of polyurethanewith applications in multiple sectors. The selection of the right diisocyanate is crucial in order to achieve the desired properties in the polyurethane end, as the tear resistanceelongation and chemical resistance.