Natural® FR

Natural® FR is a sustainable, zero-halogen, low smoke, low toxic rubber compound based on natural rubber. Natural® FR has been developed at TARRC and is based on a modified natural rubber grade that is renewable.

It starts its journey from the latex of the natural rubber tree Hevea brasiliensis. Natural® FR can be used to meet material flammability criteria in industrial rubber products and has passed the flammability requirements for floor composites and flexible rubber-metal units as specified in the new EU standard EN45545-2 (2013).

Natural® FR entrance matting has now been installed in 32 Transport for London stations.


EKOPRENA is a sustainable, low carbon footprint speciality NR material. EKOPRENA /silica compounds have been developed by technologists at TARRC and are being commercialised for use in tyre applications.

In both passenger and truck tyre compounds containing silica filler, EKOPRENA enables tyre manufacturers to better meet current European tyre labelling legislation, providing ground-breaking low rolling resistance (greater fuel economy) and improved wet and ice grip.

Novor – a premium vulcanising agent

Novor is a novel class of vulcanising agent developed by TARRC. Compounds containing Novor systems provide:

  • Excellent aged fatigue performance: fatigue resistance improves, hardness and modulus are unchanged 
  • Excellent ageing and reversion resistance: large articles cure uniformly 
  • Increased productivity in mixed systems 
  • Invisible curing agent: cannot be detected by chemical analysis


NR compounds containing mixed sulphur/Novor systems provide the compounder with an infinite variation in reversion resistance, which can be tuned to the technical requirements and cost. Several of these mixed systems appeared to be unaffected by cure temperature, thus making them attractive for high temperature curing in injection moulding machines.

Novor cure systems are being used in applications where the extra cost can be accommodated by exceptional service performance, to improve production rates or to meet the ever-increasing demands put upon manufacturers by technical specifications.

TARRC Brickendonbury Rubber Division Minerals IRCO