Crosslinking Agent Silibase-BC40B

Product description Silibase-BC40B is a monofunctional peroxide formulation which is used for the crosslinking of natural and synthetic rubbers, as well as thermoplastic polyolefins. Major decomposition products Methane, Acetophenone, 2-Phenylpropanol-2, -methylstyrene Dicumyl peroxide, powder 40% with calcium carbonate Molecular weight : 270.4 Active oxygen content peroxide : 5.92% actual product : 2.31-2.43% CAS No. : 80-43-3 EINECS/ELINCS No. : 201-279-3 TSCA status : listed on inventory Specifications Appearance : Off-white powder Assay : 39.0-41.0% Applications Silibase-BC40B is used for the crosslinking of natural and synthetic rubbers, as well as thermoplastic polyolefins. • Rubber compounds containing Silibase-BC40B combine good processing safety with a fair speed of cure. • Safe processing temperature: 130°C (rheometer ts2 > 20 minutes). • Typical crosslinking temperature: 170¡ãC (rheometer t90 about 12 minutes). Thermal stability Organic peroxides are thermally unstable substances, which may undergo self-accelerating decomposition. The lowest temperature at which self-accelerating decomposition of a substance in the original packaging may occur is the Self-Accelerating Decomposition Temperature (SADT). The SADT is determined on the basis of the Heat Accumulation Storage Test. For Silibase-BC40B SADT : 80°C