TAPEH
Product description
Tert-Amyl peroxy-2-ethylhexanoate
Active Oxygen content : 6.6%
Balance :
technical pure
CAS No. :
686-31-7
Einecs :
2116873
TSCA :
registered
Specification
Appearance :
clear liquid
Assay :
95% min.
Color :
20 Pt-Co max.
Hydroperoxides as TAHP :
0.2% max.
Inorganic + organic hydrolyzable chloride : 50 mg/kg max.
Physical properties
Density, 10℃ :
904 kg/m3
Viscosity, 10℃:
6 mPa.s
Major decomposition products
Carbon dioxide, 2-ethyl hexanoic acid,
tert-amylalcohol, methane, ethane, n-heptane, methyl ethyl ketone.
Packaging
Standard packaging size for
TAPEH is 20 kg net.
Smaller packaging size is available on request.
Application
1.Polymerization of acrylates and methacrylates
TAPEH can be used to initiate the
(co)polymerization of acrylates and methacrylates in the temperature range between 70℃ and 120℃.
TAPEH can be applied in suspension as well as in solvent and bulk polymerization.
TAPEH
can also be used for the copolymerization of styrene and acrylonitrile and for vinyl acetate based copolymers.
2. Peroxides for Thermoset Resins
tert-amyl peroxy-2-ethylhexanoate, is a perester which is used for the curing of unsaturated polyester resins at high temperatures.
TAPEH is preferred for the curing of UP resin based Hot Press Moulding formulations (such as DMC and
BMC) in the temperature range of 120-160℃ as such or as a kicker in combination with a low reactive peroxide like e.g.
TBPB. The low reactive peroxide must be included in the formulation in order to achieve a complete cure.
TAPEH as such is in comparison with tert-butyl peroxy- 2-ethylhexanoate, somewhat faster and will in general result in a more efficient cure and a lower residual styrene content of the moulded part.
TAPEH has normally a much shorter pot life in the pure resin and is more reactive than
tert-butyl peroxybenzoate.
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