Synthesis and Properties of Thermally Stable Pressure Sensitive Adhesives for LCD Devices

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Waterborne acrylic pressure sensitive adhesives (PSAs) were synthesized by pre-emulsion addition method, characterized by FT-IR, 1H NMR spectra and differential scanning calorimetry (DSC), and evaluated their physical properties based on main and cohesive monomers. The waterborne acrylic PSA synthesized from 2-ethylhexyl acrylate (2-EHA) and butyl acrylate (BA) as main monomers, and 10 wt% of methyl methacrylate (MMA) as a cohesive monomer, showed excellent physical properties such as initial, moisture and heat resistant peel strengths, which are considered to be one of the most important properties to be applied for liquid crystalline display (LCD) devices.