Solvent Borne Silicone PSA Adhesive

Typical Formulation Ingredients

Phase

Ingredient

Parts by weight

A

Reactive polysiloxane solution (Dowsil 7687, Dow Chemical)

xxx

A

Crosslinker (Syl-Off SL 7028, Dow Chemical)

xxxx

A

Catalyst (Syl-Off 4000, Dow Chemical)

xxxxxxx

A

Adhesion additive (Syl-Off 297, Dow Chemical)

xxxxxxx

A

Solvent (toluene, heptane, ethyl acetate, mixtures)

xxxxxx

Typical Properties

Properties

Viscosity of Dowsil 7687 alone, cps @ 25°C

xxxxx

Peel adhesion to PET film after 1 min cure at 150°C, g/in

xxxx

High adhesion

High solid content

Flexibility to use with other addition cure PSA to control peeling adhesion

Processing

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Resulting Properties

Silicone pressure sensitive adhesives 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.

Tips and Tricks

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