Compositions and methods for coating removal

Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...

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510201, 510202, 510203, 510206, 510207, 510309, 510311, 25218625, 25218626, 25218629, 25218633, 134 2, 134 38, C11D 339, C11D 3395, C11D 738, C01B 1500

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058308369

ABSTRACT:
Compositions and methods for removal of polymeric coatings from nonporous surfaces are provided. The method comprises the mixing of two stock solutions, a peroxide/acid solution and an alkaline solution, and immediate application to the surface to be stripped of coating. The applied mixture produces a controlled peroxide oxidation reaction causing the coating to become softened-to-release. A further step of washing or blowing with water, air, cornstarch, or plastic media will remove the softened-to-release coating. The two stock solutions are stable to storage and, when in use, are continuously mixed in a volume so as to control reaction rate, pH, corrosivity of the coating remover, and reaction rate with the coating.

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Graco, Inc. Parts List for Plural Component Proportioning Pump, published 1994 or earlier.
Military Specification (Cancelled), "Remover, Paint, Nonflammable, Water Rinsable," MIL-R-8633A (Aer), 24 Oct. 1956, Superseding MIL-R-8633(Aer), 18 Aug. 1953.
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Military Specification, "Remover, Acid Activated, for Amine-Cured Epoxy Coating Systems," MIL-R-81903 (AS), 26 May 1972.

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