Adhesion is a phenomenon in which surfaces bond together by interfacial forces. The phenomenon of adhesion can be a function of the adhesive's wettability, the surface energy of both the adhesive and the wetting substrate, and finally, the kinetics of the wetting process.

The main components of solution polymerization are monomers, initiators, and solvents. Auxiliary components include chain transfer agents. Monomers have a direct impact on the performance and final properties of the adhesive, including hardness, flexibility, adhesion, solvent and chemical resistance, and glass transition temperature (Tg). The polymerization of these adhesives takes place in organic solvents. The monomers, initiator, and resulting polymer are in a solution within the solvent. In the production process of acrylic adhesives, physical configuration properties such as Tg and environmental resistance—especially solubility behavior, resistance to light, and chemicals—are of particular importance. Acrylic pressure-sensitive adhesives contain monomers with different glass transition temperatures (Tg). By using monomers with various functional groups and changing their quantities during polymerization, adhesives with different degrees of tackiness can be produced. Adhesives based on acrylic polymers have good stability against ultraviolet (UV) light and are also stable against hydrolysis. In general, the properties of pressure-sensitive adhesives depend on the base polymer and other materials used in the formulation.

In solvent-based acrylic adhesives, the adhesive components are combined with a solvent. When the solvent evaporates, it creates strong bonds with the underlying substrate, producing durable and long-lasting films. This results in a stronger, more durable structure that is resistant to chemicals and a wider temperature range. These adhesives bond well to many substrates and have a good overall balance of adhesive properties. The advantages of solvent-based acrylic adhesives include fast drying, good resistance to heat and aging, resistance to plasticizers, good adhesion to non-polar substrates, and high bond strength. Overall, by changing the polymer structure, adhesive properties can be engineered for specific applications.

Iran Industrial Resins Research Group, by controlling the formulation of solvent-based acrylic adhesives based on pure acrylics and styrene acrylics with varying degrees of tackiness, is able to meet the diverse needs of the country as follows: