In this edition, the General Intro-duction, Synthesis Characteri-sation, Structure, Properties and Applications of Conventional Polymers have been discussed. It also include the high performance polymers and composite and their processing. At the end of the book questions are given for the practice. This book covers the complete syllabus of ?Polymer Science and Tech-nology? in various Technical University. We hope that the present edition will be more useful to the B.Tech students.