ZAIKTHENE was developed in 1965 to enhance paper functionality, and its application has been expanded widely in industrial processes since then. The characteristics and applications of ZAIKTHENE and water based emulsion products will be introduced in this article. In the modern society where switching to water-based products is attracting attention, we believe that it is meaningful to introduce our products with this article. While applications in which water-based emulsions are used for coatings, binders, dipping, dispersants, and many others, we hope that the creation of new ideas or new values based on this article will be achieved.