Protective overlay film

Details Protective overlay film Protective overlay film

C - Chemistry, Metallurgy

09

J

240/150, 117/25

C09J 7/02 (2006.01) B41M 7/00 (2006.01) C08G 18/62 (2006.01) G02B 5/128 (2006.01)

Patent

CA 1339541

A protective overlay film comprising (1) a solvent-resistant, abrasion-resistant, and weather-resistant protective layer having an inner surface and an outer surface, and (2) an adhesive layer on the inner surface of the protective layer, wherein, the protective layer has a modulus at 2 percent elongation of at least 550 megaPascals, and is made from a mixture of at least one hydroxy-functional acrylic polyol and at least one polyfunctional curing agent. The acrylic polyol preferably has an effective Tg of between about -20°C and about 30°C and preferably has an effective equivalent weight of between about 300 and about 6000. The curing agent typically comprises at least one polyfunctional isocyanate, aminoplast resin, azlactone, or combination thereof, and preferably has a functionality between about 2 and 20.

610173

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