i think they're pretty interchangeable, but if you want to be nitpicky:
verdigris is the green coating that accumulates on copper and brass metals.
patina is the green coating that collects on bronze metal. (although patina is used much more broadly than that as well)
taken from definitions below (mac dictionary widget):
verdigris |ˈvərdəˌgrēs; -ˌgris; -ˌgrē|
noun
a bright bluish-green encrustation or patina formed on copper or brass by atmospheric oxidation, consisting of basic copper carbonate.
ORIGIN Middle English : from Old French verte-gres, earlier vert de Grece 'green of Greece.'
patina |pəˈtēnə|
noun
a green or brown film on the surface of bronze or similar metals, produced by oxidation over a long period.
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Nothing.
The main difference between artwork and work of art is that a work of art is generally held in higher regard than an artwork.
More red in maroon
papichulo
Verdigris
If your attic doesn't have any leaks, then the patina (green color) is most likely formed by the reaction between the copper and carbon dioxide in the air, forming copper carbonate. This patina, called verdigris, protects the copper underneath from corrosion.
Copper (II) acetate has the chemical formula Cu(CH3COO)2.It is the primary component of verdigris, the green patina seen on copper statues.
The word is "oxidation", which in the case of copper is a three-step process where the copper oxidizes to copper oxide, then to cuprous or cupric sulfide, and then to copper carbonate. Copper carbonate is the green colored copper or patina that forms over time. The old name for this green patina is "verdigris".
Acetone will not remove verdigris.
Verdigris - Doctor Who - was created in 2000.
Verdigris Deep has 400 pages.
The ISBN of Verdigris Deep is 978-1405055376.
Verdigris Deep was created on 2007-05-04.
Verdigris - 2014 was released on: USA: 2014
Verdi = green. Gris = gray. So verdigris = greengray.
Verdigris occurs naturally where copper metal is expose the air and is next to a source of salt water. The combination of moisture and salt in the air leads to the formation of verdigris on copper.