A VERY Tough clear coat is made by
, their catalyzed urethane clear
coat (Glisten PC). It is used a lot on yachts to coat bright work so
it doesn't corrode. It is a bit thick, but it can be thinned. I have
found it goes on best sprayed rather than brushing which gives a
thicker coating and often doe small bubbles, neither of these
problems occur with sprayed coatings. It can also be colored and
ultra fine glitter can be incorporated in the coating as well. UV
inhibited and it gets stronger in moist environments. It is a
catalyzed AND thinner based coating. It is the toughest clear coat
coating I have ever had to remove.
Also available is a clear coat lacquer by Birchwood Casey the
thinned coating is Incralac, the water based coating in Syncrlac. I
have used the incralac with great success but I have never used the
Incralac. This product was originally formulated for use on bronze
sculpture or any copper alloy, especially for outdoors. It has UV
inhibitors in it, has about a 15 year exposure life, when it starts
to degrade it can be removed with MEK then re applied on the
bronze/copper right after removal.
POR products can usually be purchased from good automotive paint
supply houses or from PR 15 directly (shipping is a bit pricy as it
is considered a hazardous material). The BC products can be purchased
. They also have some
other clear coats for copper alloys of their own formulation. I would
think they are great but I have not had any long term use of them.
Debbie would be happy to help you (PHONE: 1-800-728-57870). They are
on the West coast of the US if you want to call them.
Hope this helps a bit.