Patent ID: 8747952

Claim:
A coating on an aircraft structure substrate, where said coating can be produced using the following components or multicomponent system for producing a coating, comprising the following components: (A) from 15-50 mol % of one or more silicon-organic compounds of formula (I) R a 4-n SiX a n (I), wherein: each X a is independently of each other a hydrolysable radical; each R a is independently of each other a non-hydrolysable radical; n is 2,3 or 4; (B) from 30-70 mol % of one or more silicon-organic compounds of formula (II) wherein: each X b is independently of each other a hydrolysable radical; R b is a non-hydrolysable radical without an epoxide function, without an acryloxy function, without a methacryloxy function and without an isocyanate function; each Y b is independently of each other a non-hydrolysable radical with a crosslinkable function selected from the group consisting of epoxide, acryloxy, methacryloxy and isocyanate p is 2 or 3; q is 1 or 2; the sum of p and q is less than or equal to 4; (C) from 2-25 mol % of one or more crosslinking agents for the crosslinkable function of the radical Y b ; (D) one or more organozirconium, organotitanium or organoaluminum compounds containing hydrolysable organic radicals, for forming covalent bridges between silicon atoms and metal atoms of a metallic substrate in an amount of at most 40 mol %; (E) one or more hydrolysis catalysts; (F) one or more crosslinkable prepolymers selected from the group consisting of epoxy resins and epoxysiloxane resins and mixtures thereof in an amount of at most 10 wt % based on the total weight of components (A), (B), (C) and (D), wherein at least one of the prepolymers have an epoxy equivalent weight of at least 200, wherein the content of prepolymers having an epoxy equivalent weight of less than 200 is at most 5% by weight, based on the total weight of components (A), (B), (C) and (D), wherein the content of prepolymers having an epoxy equivalent weight of less than 200 is not greater than the content of prepolymers having an epoxy equivalent weight of at least 200; and optionally (G) one or more corrosion inhibitors selected from the group consisting of inorganic and organic corrosion inhibitors; and optionally (H) one or more compounds for reducing the reactivity of component (D); wherein the mol percentages relate to the total quantity of components (A), (B), (C) and (D), on the condition that n and the sum of p+q are not at the same time each 4.