Prices are a mixed bag / PC up / Polyamides and PBT stable / POM sees small gains / No clear direction recognisable for June either / PMMA under upward pressureEuropean engineering thermoplastics prices showed a varied picture in May. Whereas PC continued to feel the effects of the benzene cost increases in Q1, the three months of polyamide price rises appear to have come to an end. PBT, on the other hand, continued to trade at a high level. With POM, producers' urgent need to improve margins resulted in a few minor increases. PMMA producers were eagerly preparing for the half-year negotiations, with early signs of impending triple-digit hikes. ABS producers factored in only a part of May's monomer increase. PP compounds prices, on the other hand, remained stable even amid the feedstock rise, largely thanks to the protection afforded by stable indexed orders.