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Product Name: Crosslinking of silicone rubbers.
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-45S
Equivalent Product:Trigonox® 101-45S-ps
Product description
2,5-Dimethyl-2,5-di(tert-butylperoxy)hexane, paste
45% in silicone oil
Molecular weight : 290.4
Active oxygen content peroxide : 11.02%
actual product : 4.84-5.06%
CAS No. : 78-63-7
EINECS/ELINCS No. : 201-128-1
TSCA status : listed on inventory
Silibase-45S is a bifunctional peroxide formulation which is mainly used for the crosslinking of
silicone rubbers.
Specifications
Appearance : White high viscous paste
Assay : 44.0-46.0%
Characteristics
Density, 20°C : 0.940 g/cm³
Major decomposition products
Methane, Ethane, Acetone, tert-Butanol, tert-Amylalcohol
Applications
Silibase-45S is mainly used for the crosslinking of silicone rubbers.
• Rubber compounds containing Silibase-45S have excellent scorch safety.
• Safe processing temperature: 135°C (rheometer ts2 > 20 minutes).
• Typical crosslinking temperature: 175°C (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-45S SADT : 80°C (176°F)
The Heat Accumulation Storage Test is a recognized test method for the determination of the
SADT of organic peroxides.