Stripping of coatings Al-containing coatings
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United States of America Patent
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Jul 5, 2022
Grant Date -
Oct 21, 2021
app pub date -
Aug 21, 2019
filing date -
Aug 21, 2018
priority date (Note) -
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Abstract
Method for stripping a coating from a coated surface of a substrate, wherein the coating is stripped in an aqueous alkaline solution, characterized in that the method comprises following steps:—preparing the coated substrate to be decoated by providing the substrate with a strippable coating by depositing a coating comprising one or more layers, wherein one layer comprising aluminum is deposited directly on the substrate surface to be decoated and—introducting the substrate to be decoated in the aqueous alkaline solution, thereby conducting a chemical stripping of the coating from the substrate, whereas the aqueous alkaline solution comprises NaOH in a concentration in weight percentage from 30 wt. % to 50 wt. %.
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