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FRP unsaturated polyester resin catalyst vinyl ester resin hardener
Butanox M-50 is a general purpose methyl ethyl ketone peroxide (MEKP) for the curing of unsaturated polyester resins in the presence of a cobalt accelerator at room and elevated temperatures.
The curing system Butanox M-50/cobalt accelerator is particularly suitable for the curing of gelcoat resins, laminating resins, lacquers and castings; moreover the manufacture of light resistant parts may be possible contrary to the curing system benzoyl peroxide/amine accelerator.
Practical experience throughout many years has proven that by the guaranteed low water content and the absence of polar compounds in Butanox M-50, this peroxide is very suitable in GRP products for e.g. marine applications.
For room temperature application it is necessary to use Butanox M-50 together with a cobalt accelerator (e.g. Accelerator NL-49P).
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Product description |
Methyl ethyl ketone peroxide, solution in dimethyl phthalate |
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CH3 |
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CH3 |
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CH3 |
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HOO |
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C |
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O |
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O |
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C |
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OOH ; HOO |
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C |
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OOH ; HOOH |
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C2H5 |
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C2H5 |
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C2H5 |
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CAS No. |
: 1338-23-4 |
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EINECS/ELINCS No. |
: 215-661-2 |
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TSCA status |
: listed on inventory |
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Specifications |
Appearance |
: Clear and colorless liquid |
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Total active oxygen |
: 8.8-9.0% |
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Characteristics |
Density, 20°C |
: 1.180 g/cm3 |
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Viscosity, 20°C |
: 24 mPa.s |
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Water content |
: max. 3.0% |
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Storage |
Due to the relatively unstable nature of organic peroxides a loss of quality |
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can be detected over a period of time. To minimize the loss of quality, |
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AkzoNobel recommends a maximum storage temperature (Ts max.) for |
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each organic peroxide product. |
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For Butanox M-50 |
Ts max. = 25°C |
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When stored under the recommended storage conditions, Butanox M-50 |
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will remain within the AkzoNobel specifications for a period of at least 3 |
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months after delivery. |
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Thermal stability |
Organic peroxides are thermally unstable substances, which may undergo |
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self-accelerating decomposition. The lowest temperature at which self- |
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accelerating decomposition of a substance in the original packaging may |
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occur is the Self-Accelerating Decomposition Temperature (SADT). The |
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SADT is determined on the basis of the Heat Accumulation Storage Test. |
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For Butanox M-50 |
SADT : 60°C |
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Main Product:
Unsaturated Resin,
Vinyl Ester Resin,
Epoxy Resin ,
Gel coat resin,
The glass fiber,
Curing agent
