DPG Diphenyl guanidine Crompton-Uniroyal Chemical Catalysts / Accelerators / Vulcanizing agents >> Guanidines Rubber - Elastomer (Chloroprene, Butyl …) DPG Accelerator diphenylguanidine DPG can be used as either a primary or secondary accelerator in natural rubber, SBR, nitrile (Paracril ® ) and butyl. When used as a primary accelerator, DPG offers good processing safety and storage stability of compounds with a moderately slow cure rate. This makes DPG ideally suitable for use in thick walled rubber articles. DPG has a powerful activating effect when used as a secondary accelerator. Nonstaining and nondiscoloring, especially when used as a secondary accelerator. DPG is a general purpose accelerator for sulfur cures. Very active above 116°C (240°F); moderately low activation temperature. Use in natural and synthetic rubbers. Nonstaining and nondiscoloring diphenylguanidine. Used as either a primary or secondary accelerator for sulfur cures in natural rubber, SBR, nitrile and butyl. Offers good processing safety and storage stability, and moderately slow cure rate when used as a primary accelerator. Possesses powerful activating effect when used as a secondary accelerator. Provides very good activity above 116°C and moderately low activation temperature.