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  1. Polyurethane - Wikipedia

  2. Introduction to Polyurethane Chemistry - ACS Publications

  3. What is Polyurethane? Composition, Preparation, Properties

  4. Polyurethane (PU): Structure, properties, and applications

  5. Polyurethanes: Structure, Properties, Synthesis, Characterization

  6. Structural Analysis of Polyurethane Monomers by Pyrolysis GC

  7. Polyurethane and Its Derivatives | SpringerLink

  8. Polyurethanes: Structure, Properties, Synthesis, Characterization, …