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| Copper
Naphthenate |
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Copper
is not used as a drier due to its low activity and green
color. Copper naphthenate is basically used as an anti fouling
agent, rot proofing agent and preservative. In textiles
it offers good protection mildew, fungi and dry rot. It
protects timber and tent cloth from beetles, termites and
white ants.
It
is used in marine paints as an anti-fouling agent as it
hydrolyses to produce copper hydroxide and naphthenic acid.
Both these substances prevent fouling by organisms such
as barnacles and sea weed.
Copper naphthenate offers an advantage over phenolic type
preservatives as it does not retard the drying of the subsequent
paint films and is free from bleeding tendency. It does
not cause corrosion of metal parts coming in contact with
wood where it is used as a preservative. It is normally
applied in solution and emulsified forms.
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