Improved aircraft transparency

C - Chemistry – Metallurgy – 09 – J

Patent

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Details

C09J 175/04 (2006.01) B32B 17/10 (2006.01) B32B 27/08 (2006.01) B64C 1/14 (2006.01) C08G 18/44 (2006.01) C08G 18/66 (2006.01) C08J 7/00 (2006.01) C08J 7/04 (2006.01) C09D 175/06 (2006.01) C09J 133/02 (2006.01)

Patent

CA 2214594

The present invention relates to an aircraft transparency including an electroconductive metal oxide coating over a rigid plastic substrate, and a polyurethane protective liner over the metal oxide coating, and more specifically to the use of a primer for adhering the metal oxide coating to the substrate and/or a primer for adhering the polyurethane protective liner to the metal oxide coating. The metal oxide primer includes a carbonate diol-based crosslinked polyurethane. The polyurethane primer is selected from the group consisting of a crosslinked copolymer of acrylic acid and substituted acrylates such as 2- ethylhexylacrylate; a crosslinked copolymer of cyanoethylacrylate and acrylic acid; and a crosslinked terpolymer of 2-ethylhexylacrylate, cyanoethylacrylate and acrylic acid.

L'invention porte sur un transparent pour avion, comportant un revêtement d'oxyde métallique électroconducteur sur un substrat de plastique rigide avec une couche protectrice à base de polyuréthane par dessus celle d'oxyde métallique, et plus spécifiquement sur l'emploi d'un primaire pour faire adhérer le revêtement de polyuréthane à la couche d'oxyde métallique. Le primaire d'oxyde métallique renferme un polyuréthane réticulé à base de carbonate diol. Le primaire de polyuréthane est choisi dans le groupe constitué d'un copolymère réticulé d'acide acrylique et d'acrylates avec substitution, comme le 2-éthylhexylacrylate, un copolymère réticulé de cyanoéthylacrylate et d'acide acrylique, et un terpolymère réticulé de 2-éthylhexylacrylate, de cyanoéthylacrylate et d'acide acrylique.

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