Ethacure 300 Diethylthiotoluenediamine 106264-79-3 Albemarle Crosslinking / Coupling / Curing Agents >> Amine Polyurethane Insoluble in water Miscible in ethanol Miscible in toluene ETHACURE 300 curative, a liquid aromatic diamine with low chronic toxicity, is an effective curative for polyurethane cast elastomers. It is used in both hot and room-temperature casting. Other uses include: a slower chain-extender for polyurethane-urea and polyurea elastomers in reaction injection molding (RIM), structural RIM (SRIM) and hand-applied and spray coating applications–alone or in blends with ETHACURE 100 Curative. Performance, Abrasion Resistance and Solvent Resistance in Cast Elastomers Polyurethane and Polyurea Coating Systems Applications Performance in Polyurea Reaction Injection Molding Systems (RIM) Aromatic diamine curing agent for polyurethanes. Possesses a low chronic toxicity. Used as a slower chain-extender for polyurethane-urea and polyurea elastomers in hand-applied and spray coating applications alone or in blends with other amine curing agent.