Acrylic resins: Introduction
An Acrylic resin
is a polymeric material (in solution, dispersion or solid) containing acrylic monomers. These monomers are usually esters of acrylic, methacrylic acids or their derivatives, and can be functionalized by introducing different chemical groups (R groups) (Figure 1 below). Others monomers can also be incorporated in the polymer chains in order to obtain resins with different properties or lower cost.
In general Acrylic resins
show good chemical and photochemical resistance
. They are commonly used in many different applications, from solvent-based
and water-based industrial coatings
to architectural coatings
of an acrylic resin are the Tg (Glass transition temperature), the average Molecular weight of the polymers and their molecular weight distribution. These parameters have an impact on the resin properties (viscosity, dispersion…) and on the final film/coating obtained (flexibility/hardness...).
Figure 1: Typical acrylic monomers