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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.

59496

JAYAPRAKASH RAO
- 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!

Regards,

Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha

finishing.com - Pine Beach, New Jersey

Ted is available for instant help
or longer-term assistance.





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