Epoxidised Natural Rubber (ENR) is derived from the partial epoxidation of the natural rubber molecule,
resulting in a totally new type of elastomer. The epoxide groups are randomly distributed along the natural rubber molecule
Two grades are available commercially from the manufactures Muang Mai Guthrie Public Company Limited of Thailand,
Epoxyprene 25 (ENR 25) and Epoxyprene 50 (ENR 50) indicating 25 % and 50 % epoxidation.
Epoxidation results in a systematic increase in the polarity and glass transition temperature;
these increase are reflected in the vucanizate properties. Property changes with increasing level of epoxidation include :
an increase in damping;
a reduction in swelling in hydrocarbon oils;
a decrease in gas permeability;
an increase in silica reinforcement; improved compatibility with polar polymers like polyvinyl chloride;
reduced rolling resistance and increased wet grip.
*Nuclear Magnetic Resonance (NMR) Spectrometer Test Method.
EPOXYPRENES is presented in the form of polythene wrapped 33 1/3 kg or 35.0 kg per bale packed 36 to a 1.20 or 1.26 ton shrink wrapped pallet.