Abstract
This chapter enables readers to fully understand the coating materials by discussing the chemistry of synthesis or modification, technology of delivery, physical film formation, and chemistry of curing or cross-linking. A coating material is a product, in liquid, paste, or powder form that, when applied to a substrate, forms a film possessing protective, decorative and/or other specific properties. Synthetic resin chemistry can be broadly divided into step growth (or condensation), where typically a small molecule such as water is eliminated, and chain growth (or simply addition) where repeating units are added to a growing chain. Drying oils and modified drying oils, natural resins and modified natural resins, and cellulose derivates are the naturally derived film formers whereas alkyds, polyurethanes, amino resins, polyester, acrylics, vinyls, and epoxies are the synthetically derived film formers. Most of these can be translated to water. The transition from solvent to water-borne requires retaining the advantages of the resins traditionally carried as solutions in solvent, while overcoming a number of operational disadvantages. Polymer is synthesized in the presence of water by emulsion polymerization, suspension polymerization, and solution polymerization. The properties of polymers depend on many factors including molecular weight, polymer backbone flexibility, and the nature of side chains.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
