Heat the water to 120'F, and add the ammonium hydroxide. The add the "Carboset" 525 with moderate agitation to avoid foaming. Maintain a pH of 8.0 to 8.5 until the resin dissolves. Cool and add the "Cobratec" and stir to uniformity. Note: Small amounts of "Cobratec" in "Carboset" coatings prevent greening of copper and brass surfaces and also improve the corrosion resistance of the coating.
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