#polyurethane__ployurethan  any of various polymers containing the urethane radical; a wide variety of synthetic forms are made and used as adhesives or plastics or paints or rubber
  supertype:  #polymer  naturally occurring or synthetic; consisting of large molecules made up of a linked series of repeated simple monomers
  subtype:  #polyfoam__polyurethane_foam  a foam made by adding water to polyurethane plastics

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