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Silicone Pressure Sensitive Adhesives

SpecialChem / May 18, 2004

Silicone adhesives fill small but important niches in the pressure sensitive adhesive (PSA) market. They are generally selected for the most demanding industrial applications because of their inherent resistance to temperature extremes, moisture, chemicals, and biological attack. Silicone adhesives also offer excellent dielectric properties so that they are often used as pressure sensitive tapes for the electrical / electronics industry. Silicone polymers have an inorganic backbone and side groups that are organic. These adhesives are expensive relative to other types of PSAs, and this is the main reason why they are used only in niche markets. Although silicone PSAs provide premium performance, they generally require special formulation, as do other PSAs, to be accurately matched to specific application requirements. This article will review the formulation and applications of silicone pressure sensitive adhesives. The raw materials used in their manufacture will be examined as well as formulation possibilities to meet specific properties.

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