One of the fastest changing fields today is the field of plastics as new polymers are synthesized, new uses are found, and existing processes and products are modified and improved for ecological needs, better economics, and better values. A need has thus been felt to bring out a new edition of the Plastics Technology Handbook, as it has established itself over the years as an important source book of information on modern plastics. In this new edition, the organization and structure of the book have not been altered, but each chapter has been substantially revised by eliminating less timely material and adding more important and relevant material as well as new topics of interest in the light of recent advances and new developments. The much appreciated textbook-like approach of the earlier editions has been retained as it offers to the reader not only the factual information on processing methods, properties, and applications of myriad polymers and polymeric products but also better understanding aided by critical insights into their basic molecular nature and behavior.