摘要
According to public reports,thecapacity of isoprene in the worldwas 855 000 t/a in 2004.Russia,the United States and Japan aremajor producers and consumersof isoprene and their consumptionaccounts for 93.4% of the worldtotal.The consumption of isoprenein the world was 717 000 tons in2004.More than 95% of the totalis used in the production of iso-prene rubber,styrene-isoprene-styrene block copolymer(SIS)