1. Elastomers

Global elastomer production totaled 28 million tonnes in 2014, broken down as follows (doc. Société chimique de France):

• 12.5 million tonnes of natural rubber ;

• 15.5 million tonnes of synthetic rubber.

Synthetic rubber production breaks down as follows in descending order:

• SBR (styrene butadiene rubber): 36% ;

• BR (butadiene rubber): 22% ;

• EPDM (ethylene propylene diene monomers): 7.5% ;

• IR (isoprene rubber): 7% ;

• IIR (isobutylene isoprene rubber) butyl rubber : 5 % ;

• NBR and HNBR (hydrogenated nitrile butadiene rubber): 4% ;

• ...