Chemical Recycling of Rigid and Flexible Polyurethanes as Raw Materials

  • Lee, Dai-Soo (Division of Environmental and Chemical Engineering, Chonbuk National University)
  • Published : 2006.10.13

Abstract

Polyurethane wastes can be depolymerized with glycols and/or amines. The depolymerization products may be recycled for the preparation of various polyurethanes. Caprolactam was employed to depolymerize Spandex fibers and the depolymerization products were evaluated as raw materials for the preparation of polyurethane elastomers. The depolymerization products were homogeneous and could be used to prepare polyurethane elastomers acceptable for various applications as binders.

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