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Sulfuric acid distribution in acrylic-melamine coatings immersed in 70wt.% sulfuric acid at 60 o C was examined with an electron probe microanalyzer. Melamine derivatives extracted from the coatings were determined by UV spectra of the acid phase. It was found that the region containing the sulfuric acid had a distinct boundary expanding at a constant rate and that the sulfuric acid extracted...
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