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Acrylic Resins Selection for Coatings

To select Acrylic Resins for coatings, you would need to know about acrylic resin types, their key characteristics and applications. This guide will help you differentiate between pure acrylic resins and non-acrylic monomers. A brief description about acrylic resin forms like thermoplastic acrylic resins, cross-linking acrylic resins and acrylic latexes is offered as well. This guide also focuses on the main parameters to consider while selecting acrylic resins for your coating formulation.

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.

Key parameters 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...).
Acrylic acid based monomers
Methacrylic acid based monomers

Figure 1: Typical acrylic monomers

Acrylic Resin Selection Guide

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