Pressure sensitive adhesive suitable for aircraft exterior...

Details Pressure sensitive adhesive suitable for aircraft exterior... Pressure sensitive adhesive suitable for aircraft exterior...

2005-09-17

2009-06-09

Nordmeyer, Patricia L (Department: 1794)

Stock material or miscellaneous articles

Layer or component removable to expose adhesive

C428S3550RA

Reexamination Certificate

active

07544407

ABSTRACT:
A pressure sensitive adhesive (PSA) suitable for aircraft exterior applications formed by reacting a cross-linker with an un-crosslinked adhesive can resist many aircraft fluids and can maintain a bond to a protective barrier film of an appliqué at low and high temperatures. An exemplary PSA includes at least a first release liner and a crosslinked adhesive releasably bonded thereto. The crosslinked adhesive suitably is formed by reacting a polyisocyanate crosslinker with an un-crosslinked acrylic adhesive. The PSA can exhibit a peel strength between around 2-8 psi at temperatures between around 180-250 degrees Fahrenheit. In an exemplary method to provide a PSA, an un-crosslinked acrylic adhesive, a solvent, and a polyisocyanate crosslinker are mixed together. The mixture is reacted on a release liner. A portion of the solvent is driven off, and the polyisocyanate crosslinker is reacted with itself and with reactive groups remaining on the un-crosslinked acrylic adhesive.

REFERENCES:
patent: 6218006 (2001-04-01), Tokunaga et al.
patent: 2005/0142318 (2005-06-01), Nakabayashi et al.

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