Patent ID: 9555901
Date: 2017-01-31
CPC Classifications: B64F,C09D

Claim:
1. An aircraft with a coating on a part of its surface, wherein the coating is designed so that the coating, within a period of ≦3 hours from take-off of the aircraft and in normal flying conditions, reduces adhesion to the part of the surface to be protected until detachment occurs on the basis of (i) temperature change, wherein the temperature change is brought about at least partially by changes in environmental conditions due to a change in flying altitude after the aircraft takes off and the coating material is selected from the group consisting of polyurethane dispersions, acrylate dispersions, polyvinyl acetate dispersions and biological binders, (ii) UV radiation using a polymer that contains acid-labile groups in a main chain of a polymer and of photo-acids as initiators as the coating materials, (iii) addition of a decomposing component which is selected from a wetting addition of protein-degrading enzymes, acids and/or bases, and/or (iv) difference in air humidity, wherein the difference in air humidity is brought about at least partially by changes in environmental conditions due to a change in flying altitude after the aircraft takes off, and wherein a respective temporary layer of the coating is part of a system where the decomposition process is initiated owing to decreased air humidity at high altitudes, preferably because of the low humidity at the tropopause, the respective temporary layer becomes so brittle that there is a sufficient loss of adhesion.