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First Rubber CTP-80 is a pre-dispersed anti-scorching agent masterbatch (PVI-80) with 80% N-cyclohexylthiophthalimide. It delays premature vulcanization during mixing and processing without affecting final cure time. Compatible with sulfenamide (CBS, TBBS) and thiazole (MBT, MBTS) accelerators. Dust-free granules improve safety and dispersion. Non-staining, suitable for NR, SBR, NBR, EPDM