Propylene prices fell for the fifth consecutive week in Asian markets losing almost US$75 over the period. The buy-sell gap widened as buying indications were lower than selling ideas at over US$1,000 a ton. In US, spot chemical grade propylene price dropped to a 6-year low as inventories approached 40-month high. Supply snags continued to pressure European propylene prices as unusual number of outages tightened supply. Asian propylene markers were down US$25-34 a ton FOB Korea week on week.