Oily film on epoxy.

[Gary Lee]

I am looking for the best solution on removing the film from West System epoxy resin.

[paul oman]

almost certainly it is amine blush, caused by moisture in the air reacting with the curing agent during cure. Some epoxies blush a lot, others (usually more expensive) don't generally blush very little. WEST is generally known to blush a lot.

A search on the net on Amine Blush will probably give you several more in depth 'reports.'

I believe WEST recomends soap and water to remove their amine blush.

regards

paul oman
progressive epoxy polymers

[Gary Lee]

Thank you.

[Jim H]

Warm water & a 3M pad, rinse afterwards. Not all of the West Sys hardeners cause blush. Check their website for more info: West System Epoxy (http://www.westsystem.com/)

[Steve Miller]

Like Jim I use warm water and a 3M scrubber pad. Change the water often. Never neeed soap in the water since blush is water soluable it comes right off.

[kc8pql]

I,ve never used soap either. System Three just recommends washing with warm water.

[JimConlin]

I recollect that The Gougeons suggest a litt ammonia in the water.