Sol for sol-gel process coating of a surface and coating method by sol-gel process using same

Abstract From the Canadian patent

The invention concerns a sol for sol-gel coating of a surface said sol comprising in weight percentage: a) 3 to 30 % preferably 5 to 20 %, more preferably 7 to 15 % more preferably still 8 to 15 %, and more preferably still 10 to 13 % for example 10.8 % or 12 % of at least one zirconium aluminum, or titanium organometallic compound; b) 5 to 50 % preferably 5 to 40 %, more preferably 10 to 40 % more preferably still 15 or 20 to 30 % for example 22 % or 23 % of at least one organosilane compound; c) 1 to 15 % preferably 2 to 10 %, more preferably 2 to 8 % for example 5 % of at least one compound selected among acids bases, glycols and ethoxyethanol; d) the rest to make up 100 % being …