PU Curing Agent

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Polyurethane curing agents (crosslinkers, hardeners) react with polyol or prepolymer components to build the final polyurethane network. Common chemistries include MOCA and other diamine chain extenders for cast elastomers, isocyanate adducts and trimers (TDI/HDI/IPDI) for coatings and adhesives, and blocked isocyanates for one-component systems. Buyers compare NCO content, viscosity, pot life, amine value and handling classification. This category lists Chinese suppliers of PU curing agents by chemistry family and application.

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PU Curing Agent
CAS 101-14-4
Polyurethane curing agents are crosslinkers or chain extenders that react with isocyanate-terminated prepolymers to build the final polyurethane network. This entry covers MOCA (4,4-methylenebis(2-chloroaniline), CAS 101-14-4), the long-standing diamine curative for cast polyurethane elastomers, wheels, rollers, seals and industrial tyres. MOCA gives excellent tensile strength, abrasion resistance and resilience, and its amine value and moisture content must be tightly controlled because it drives pot life. Alternative curing-agent chemistries used in the same application space include isocyanate adducts and trimers based on TDI, HDI and IPDI for coatings and adhesives, plus blocked isocyanates for one-component systems.
1 suppliers · updated 2026-10-03

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Top suppliers in PU Curing Agent

Shandong Luhai Polyurethane Materials Co., Ltd.

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Shandong, China

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