Cyclohexylthiophthalimide, Anti-scorcher PVI(CTP)

Product Overview

Cyclohexylthiophthalimide (CTP) is a reliable delayed-action anti-scorch additive used in rubber and elastomer formulations. It helps extend scorch time, reduce the risk of premature curing, and improve processing safety in high-temperature compounding and shaping operations.

N-cyclohexylthiophthalimide is also known as scorch retardant, early vulcanization inhibitor, anti-scorch agent CTP, and anti-scorch agent PVI. It is white, light yellow or light yellow-brown crystal at room temperature. The product recrystallized from n-heptane is white crystal.

Easily soluble in acetone, benzene, toluene, ether, ethyl acetate and ethyl acetate, slightly soluble in gasoline, insoluble in kerosene and water, soluble in hot carbon tetrachloride, ethanol and heptane. React cyclohexane with hydrochloric acid to form chlorinated cyclohexane. Then use sulfur for sulfurization to prepare chlorothiocyclohexane. Finally, this product is prepared by reacting phthalimide and chlorothiocyclohexane in the presence of acid absorbent.

Key Specifications

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