Upturn continues / Tough quarterly negotiations drag on / Many types stagnate due to lack of orientation / Faster rises expected in MayIn April, the record-breaking price upswing for engineering thermoplastics in Europe continued. The stability with some grades was in most cases due to the lack of a guideline from the quarterly agreements that are still under extensive negotiations. Virtually all types and grades continued to be short, with PA 6.6 again taking the biscuit despite positive news at last with upstream ADN. Here, players are currently experiencing just how long the complex chain of original nylon can be. After the Easter break, demand picked up again at the beginning of the month and more or less returned to normal, although the momentum does not seem to be quite as great as it has been recently.