Unsaturated polyester resin catalyst MEKP cas 1338 23 4

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Product Overview

Description





MEKP initiator for unsaturated polyester resins

Trigonox V388 is 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 Trigonox V388/cobalt accelerator is developed for general purpose GRP- and non GRP-applications such as the curing of laminating resins and castings.

Practical experience throughout many years has proven that for marine applications a special MEKP with low water content and without polar compounds is demanded in order to prevent from osmosis and other problems. Butanox® M-50 is the MEKP advised for this application.

For room temperature application it is necessary to use Trigonox V388 together with a cobalt accelerator (e.g. Accelerator NL-49P).


Specifications
CAS No.
1338-23-4
EINECS/ELINCS No.
215-661-2
TSCA status
listed on inventory
Appearance
Clear and colorless liquid
Total active oxygen
9.8-10.0%
Characteristics
Density, 20°C
1.120 g/cm3
Flash point
37°C (Closed Cup)
>63°C (Open Cup)
Storage
Due to the relatively unstable nature of organic peroxides a loss of quality
can be detected over a period of time. To minimize the loss of quality,
AkzoNobel recommends a maximum storage temperature (Ts max.) for
each organic peroxide product.
For Trigonox V388
Ts max. = 25°C
Ts min. = -10°C
When stored under the recommended storage conditions, Trigonox V388
will remain within the AkzoNobel specifications for a period of at least 3
months after delivery.
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 Trigonox V388
SADT : 55°C






0.1923 s.