General Properties of Emulsion Films

The basic chemistry of emulsion-based acrylics is the same as their solution-based counterparts, in the sense that they are both combinations of hard and soft acrylic monomers, the ratios of which will dictate the final film properties. If a hard mar resistant coating with some alcohol and chemical resistance is desired, emulsions polymers with a Tg of 80°C will be required, unless the coating is crosslinked. 

Other factors that will influence the properties of acrylic polymers are  

The resin system will generally be the major part of the finished material and will give the final coating most of its inherent physical and chemical properties. It may well be beneficial to mix resins in order to achieve the desired finished properties. However, care should be taken. Long term stability studies have shown that mixed emulsions can be problematic in storage. 

Zeneca resins. Allied Colloids, Johnson Polymers, Vinamul and Rohm Haas. 

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