Preparation and characterisation of re‐dispersible acrylic powders

A comparison of the difference in chemical nature of re‐dispersible polymer powders useful for the modification of cement based compositions is made. Core‐shell acrylic lattices synthesised by multi‐step sequential polymerisation are formulated and spray‐dried to obtain re‐dispersible powders. The heterogeneous acrylic copolymers prepared are characterised by excellent re‐dispersibility, high chemical stability and good application properties.