Chromium-containing low-cure coating composition

Details Chromium-containing low-cure coating composition Chromium-containing low-cure coating composition

C - Chemistry, Metallurgy

23

C

148/20

C23C 22/27 (2006.01)

Patent

CA 1341137

A coating composition is now provided which can have a great number of desirable coating characteristics, when the composition is applied and cured on a metal substrate. Moreover, the coating composition has applicability to a great variety of metal substrates. Such substrates include base metal such as steel as well as metal coated substrates such as zinc electroplated steel. Furthermore, the coating compositions can be useful when applied to substrates sensitive to elevated cure temperature, e.g., annealed steel. In one important aspect the composition can contain hexavalent-chromium-providing substance. Particulate metal may be present in the composition. A composition furthermore contains a special organic acid/alcohol reducing agent combination for the hexavalent chromium. The composition can provide a low-cure coating on a metal substrate, which can then translate into higher production line speeds as when used for coating of metal coils.

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