As a source of data and for estimations of properties to be expected this book is widely used all over the world. This fourth edition is thoroughly revised and updated. Its objectives, as for the previous three editions, are to correlate properties with chemical structure and to describe methods that permit the estimation and prediction of numerical properties from chemical structure, i.e. nearly all properties of the solid, liquid and dissolved states of polymers. Many chapters are extended, with more back¬ground and information about the subjects discussed. In particular electrical properties (chapter 11), magnetic properties (chapter 12), mechanical properties of solid polymers (chapter 13), rheological properties of polymer melts (chapter 15) and of polymer solutions (chapter 16), crystallization (chapter 19) and environmental behaviour and failure (chapter 26) have been paid much more attention to. Also liquid crystalline polymers, appearing in various chapters (e.g. in chapters 6, 15 and 16) are discussed more extensively. Accordingly, the number of illustrations has increased from approximately 250 to more than 400.Properties of PolymersStructure-Property Correlations of PolymersEstimation and Prediction of Properties of PolymersFunctional Structural Groups in PolymersAdditive Group Contributions in Polymers