Lupranat T 80 A Mixture of 2,4- and 2,6- toluene diisocyanate (TDI) BASF-Elastogran PU - Isocyanates >> TDI, toluene diisocyanate ADHESIVE Lupranat T 80 A is an isomer mixture of 80 % 2,4- and 20 % 2,6- toluene diisocyanate (TDI). Lupranat T 80 A is used principally for the manufacture of polyurethane flexible foams for the furniture and automotive industries. It is also used for the production of polyurethane adhesives. Isomer mixture of 2,4- and 2,6- toluene diisocyanate (TDI). Used for the production of polyurethane adhesives. 2,4-toluene diisocyanate: 80%. 2,6-toluene diisocyanate: 20%.