A New Liquid Aromatic Diamine Curative for Polyurethane Cast Elastomers

Abstract

ETHACURE® 300 Curative is a high-performance, liquid curative being developed especially for the polyurethane cast elastomer industry. Testing shows that ETHACURE 300 Curative is less toxic than MOCA. MOCA [methyl enebis(ortho-chloroaniline)] is the most commonly used curative for TDI based prepolymers but its use has come under increased regulatory scrutiny in recent years. ETHACURE 300 Curative represents new technology and was designed from the beginning to meet selected targets including that of a safe "drop-in" MOCA replacement. This presentation introduces ETHACURE 300 Curative in terms of chemical and physical nature, processing characteristics, and vulcanizate properties. Advantages of ETHACURE 300 Curative over current commercial curatives, including MOCA, will also be discussed.