Patent ID: 9580610
Date: 2017-02-28
CPC Classifications: C09D,C23C,H01L

Claim:
1. A printable, sterically stabilized paste suitable for the formation of a diffusion-impermeable homogeneous Al 2 O 3 coating or a mixed Al 2 O 3 hybrid layer, comprising a precursor for the formation of Al one or more oxides of the elements selected from the group consisting of boron, gallium, silicon, germanium, zinc, tin, phosphorus, titanium, zirconium, yttrium, nickel, cobalt, iron, cerium, niobium, arsenic and lead, and at least one hydrophobic component selected from the group consisting of 1,3-cyclohexadione and salicylic acid and at least one hydrophilic component selected from the group consisting of acetylacetone, dihydroxybenzoic acid and trihydroxybenzoic acid and one or more organic acids and optionally at least one chelating agent selected from the group consisting of ethylenediaminetetraacetic acid (EDTA), diethylenetriaminepentaacetic acid (DETPA), nitrilotriacetic acid (NTA), ethylenediaminetetramethylenephosphonic acid (EDTPA), diethylenetriaminepentamethylenephosphonic acid (DETPPA), and corresponding chelating agents, wherein said paste has an acidic pH of 4-5 and results in residue-free drying.