Pureprena - Advanced Rubber for Engineering and Eco- Efficient Applications


Pureprena is a new generation of Deproteinized Natural Rubber which is produced by treating fresh natural latex with an industrial enzyme which hydrolyses all natural-occuring proteins in the latex into water-soluble forms. It contains about 96% rubber hydrocarbons compared to 93% in commercial Standard Malaysian Rubber (SMR) grades. The removal of these non-rubber components confers special attributes to the rubber which enhances its suitability for specialised rubber product applications.

Pureprena is a co-efficient form of deproteinized natural rubber with distinguished raw rubber properties. This specialty rubber has has very low nitrogen, ash and volatile matter contents as well as being light in color.



Rubber compounds based on Pureprena shows low creep and stress relaxation, low water absorption, low compression set and a more consistent modulus when subjected to conditions of variable humidity. Pureprena is therefore more suitable for a niche market where the requirements for such properties are very stringent.

Production of Pureprena Rubber (click on the image to view a larger version)

Potential Applications of Pureprena

Feature	Application
Low stress relaxation & low creep	Hydro mounts, seal, joint rings, large shock absorbers, suspension bushes and helicoptor rotor bearings.
Low water absorption	Underwater applications and large shock absorbers
Good dynamic properties and ageing	Anti-vibration mountings and surge fenders
Low protein & low ash content	Medical, pharmaceutical and food applications

Typical Properties of Pureprena as compared to SMR CV