Techniques Used For Development of Aqueous Polymeric Dispersion

Recent trends in pharmaceutical industry are development of coating methods which overcomes the various disadvantages associated with solvent based coatings. Water insoluble polymers have largely superseded the use of organic solvents for applying coatings. Aqueous polymer dispersions (APD) are preferred on environmental and safety grounds. APD offer several advantages over polymers dissolved in organic solvents including lower spraying viscosities, higher solids loading, higher spray rates, no solvent environmental, toxicity, or flammability issues, and reduced energy requirements relative to Aqueous polymer solutions. There are a wide range of water insoluble polymers includes Acrylates: Eudragit, Cellulose: Ethyl cellulose, Vinylics: Polyvinyl acetate phthalate, Cellulosic esters: cellulose acetate phthalate (CAP) & many more which provide a great research platform to develop an Aqueous polymeric dispersion (APD). This article is mainly concerned with the theoretical & practical aspects of the techniques/steps & research scope for the development of APD.