This book provides new and exciting outlooks for finding suitable recycling methods, as well as the starting materials and intermediates for PU products. Recycling of polyurethane (PU) wastes is carried out to minimise waste and reduce environmental pollution. In this book, these methods are investigated to find a suitable process for waste reduction, protecting the environment, and preventing landfilling. This book reviews aspects from contemporary literature (including our research) focusing on these topics. Recently, progress has been done by the author's research team in chemical recycling of PU waste. Recycling methods are stated clearly, as well as use of instrumental methods such as nuclear magnetic resonance spectroscopy and Fourier-Transform infrared spectroscopy for characterisation and identification of recycling products. This book provides new and exciting outlooks for finding suitable recycling methods, as well as the starting materials and intermediates for PU products.