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The most common modifiers are latex polymers and elastomers selected for compatibility with the emulsified binder. SBS and SBR families are widely used to increase elasticity, crack-bridging, and adhesion, especially for sealers and waterproofing emulsions. Acrylic and styrene-acrylic latexes are also used in coatings to improve film properties and UV stability. The key is stable incorporation without destabilizing the emulsion, which requires compatible surfactant systems, controlled shear, and validated residue performance. Buyers should request evidence of elastic recovery and adhesion testing, not just polymer claims.
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