TYPES OF WATERBORNE SYSTEMS

Before proceeding into detailed discussion, it is worth revising the differences between solution (in solvent)and emulsion acrylic polymers. Their typical characteristics are compared in Table 7-5. 

Viscosity very dependent on molecular wt. low and independent of molecular wt. 

The majority of vinyl and acrylic surface coating resins are manufactured by either solution or emulsion polymerisation techniques. It is also worthwhile recapping the distinct types of waterborne resins. 

A water insoluble resin is dispersed in water using surfactants, etc. 

Acid (or amine) functional resin is conventionally polymerised in a water soluble solvent, neutralised and inverted/dispersed/solubilised in water 

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