( OF - 7)
OF - 7 is a polymeric alkyl phenol disulfide,
contains unique sulfur donors in the molecular structure, can vulcanize rubber in heated state, typically used as nitrosamine - free environment - friendly sulfur donating body
in the rubber compound formulations, can give excellent mechanical properties, heat aging resistance, excellent dynamic fatigue properties and good operational safety performance. OF - 7 is equivalent to Vultac - TB7. CAS 60303 - 68 - 6.
Item I ndex
Appearance Yellow to yellowish - brown granula
Softening Point 95 - 115
(Ball and ring), ℃
Sulfur Content, ％, 29. 5 - 31. 5
OF - 7 contains unique sulfur donors,
can vulcanize rubber in heated state, giving non - blooming,
high tensile strength, excellent heat resistance and dynamic fatigue properties, used as sulfur donor type vulcanizing agent for NR/SR. For the co - vulcanization of different polar rubber,
such as NR, CIIR, IIR and EPDM, it provides excellent performance. Can be used in tires, gaskets, belts, automotive hose, damping products. Because containing alkylphenol groups, it has also excellent tackifying and antioxidant effects. Not producing nitrosamines toxic gas during vulcanization, it is an environmentally friendly additive. Reference dosage 0. 5 - 5 phr.