Polyamide prices continue to fall / PC and PMMA also slightly lower / Buyers tied to long-term contracts will fight excessive prices next yearEuropean engineering thermoplastics prices continued to erode in December, and it was again the PA 6 grades that led the way. Free compounders had further scope for reductions as a result of the slump in base polymer prices, which are gradually reaching historical lows. The natural PA 6.6 grades were also dragged down, while the price of reinforced material remained stable due to the existence of long-term contracts and also because of the changes in flame retardants. In the case of PC, buyers continued to nibble away at the very high notations from spring, again achieving minor successes. With PMMA, too, the erosion continued. Apart from PBT and POM, the commodity-related ABS and PP compounds also remained stable this time.