Developments in raw materials — Part 4: Non‐convertible media

The previous three reviews in this series have considered recent developments in the pigments and extenders used in surface coatings; the next two articles will be concerned with the other essential ingredient, the polymer component. The polymer is the media that binds the other constituents of the formulation together and forms an adherent film on the substrate being coated. This vital component also provides many of the necessary chemical, mechanical and durability properties required for the coating to provide an effective level of performance in its service environment.