The purpose of deinking is to remove printing inks and other substances that mighı affect the papermaking process or final properties of paper. Unsatisfactory seperations give a paper with low brightness and dirt specks. Effective deinking depends on the ink properties, paper quality and paper coating process. Deinking process are applied by using different methods, Various reactions occur beıween added chernicals and seperate substances during deinking process. The chemical aspect of deinking process has been detailed in this study.