100754-34-5 103843-23-8 104444-14-6 105635-01-6 105954-03-8 111566-61-1 112024-94-9 114206-96-1 114558-42-8 116357-92-7 117631-08-0 117926-03-1 120720-22-1 121182-94-3 132703-37-8 147415-03-0 31694-16-3 80803-65-2 84137-36-0 PEEK Poly(oxy-1,4-phenyleneoxy-1,4-phenylenecarbonyl-1,4-phenylene) polyetheretherketone