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Flash Rusting of PUD water based coating
December 24, 2013
Q. Pud [polyurethane dispersion] water based coating poses problem of flash rust, especially in rainy season, in spite of dosing with anti flash rust additives in the paint formulations.
- HYDERABAD, ANDHRA PRADESH, INDIA
A. Hi Jayaprakash. Maybe I'm misunderstanding, but it looks like you are simply adding a polyurethane dispersion to a temporary rust preventative and calling it a coating system :-)
Please describe your pretreatment steps in detail so we can help you fix it; non-robust finishing processes are environmentally hostile. Thanks!
Ted Mooney, P.E.
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