Method for application of protective polymer coating

Details Method for application of protective polymer coating Method for application of protective polymer coating

B - Operations, Transporting

05

D

B05D 1/38 (2006.01) B05D 1/10 (2006.01) B05D 7/00 (2006.01) B05D 3/02 (2006.01)

Patent

CA 2263038

A process for application of a protective coating to a steel, concrete, or wooden structure so as to provide protection against corrosion, weathering, or other environmental damage in which the surface to be protected is heated to a temperature in a range of about 75°F to about 150°F after which a liquid thermoset primer is applied to the heated material in two stages. The first portion is solidified by heating and then coated with a second portion, forming an uncured liquid thermoset outer primer layer. A melted polymer powder layer is then applied by flamespraying over the uncured liquid thermoset primer layer, forming an intermediate polymer powder layer embedded in the uncured liquid thermoset primer layer. The intermediate melted polymer powder layer is then heated to a flow temperature of the polymer powder and a second layer of melted polymer powder is applied over the intermediate polymer powder layer, forming an outer melted polymer powder layer which then cools to form the final protective coating.

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