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Product Name: Crosslinking Agent
Other Names: curing agent, curing ingredient,vulcanizing agent,vulcanizater
crosslinking agent, cross linking agent, bridging agent
accelerant, accelerating agent, accelerator, cure accelerator for silicone rubber
Item NO.: Silibase-BC40B
Equivalent Product: Perkadox® BC-40B-pd
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