Diethyltoluenediamine(DETDA) CAS 68479-98-1

Diethyl-toluene-diamine (DETDA), CAS number 68479-98-1 is an aromatic diamine liquid curing agent, which is similar to Ethacure 100 and DETDA 80, for polyurea and polyurethane (PU).

Being an effective chain extender for polyurethane applications, DETDA is an ideal solution with its low cost and excellent properties, particularly for RIM (reaction injection molding) and SPUA (Spray Polyurea Elastomer). DETDA enables polyurethane/epoxy cures in a very short time, tack-free in seconds and seal surface perfectly to protect floors, facades, roofs and bridges. Best of all, DETDA-type polyurea covers and seals vertical surfaces in a few seconds without sagging.

DETDA is the most common chain extender in polyurethane industry, it has low viscosity, can be handled easily and more eco-friendly. Being the liquid form, DETDA can be processed at room temperature and cured well. Furthermore, DETDA-type elastomers have high dynamic resilience as same as MOCA-type ones. Meanwhile, there is less toxicity and dust in the production plant in comparison to MOCA.

Similar with its use in polyurethane and polyurea as curing agents, DETDA is used as a hardener and crosslinker for epoxy resins. Its two amine groups react with four epoxy groups, and even form a high-temperature crosslinking center together with bisphenol A. By adjusting the dosage, DETDA can provide quick reaction and cross-linking range when demanding.

Comparing with DMTDA, DimethylthioToluene Diamie, there is no unpleasant sulfur smell and the curing finished products are harder with better physical properties.