MOCA 4,4′-Methylenebis(2-chloroaniline) CAS 101-14-4

4,4' - Methylenebis (2-chloroaniline), also called MOCA, is a substance used as a crosslinking agent / chain extender for polyurethane products, especially for cast polyurethane elastomers (CPU).  Polyurethane elastomers are flexible and posse elasticity nature like rubber but with significant properties, it combines high elasticity of rubber and rigidity of plastic.   MOCA features with color stability in high temperature.  MOCA-base elastomers are good for abrasion / impact / chemical / oil / ozone and cold resistance, elasticity no matter with high or low hardness (Shore A to Shore D rating), high tensile / tear / compression strength, and absorption of vibration.  With the long pot life, it’s very easy to handle with, you can even handle manually instead of by machines.  Resulting from those physical properties and advantages, MOCA is the most common crosslinking / chain extender for urethane elastomers (TDI system).  Meanwhile, it’s also a universal curing agent for Epoxy products.