On 13 Aug 2007 at 20:51, james.candace wrote:
They say that issocyanates are only harmfull in mist form, but it is a
solvent and can take many forms I guess. You would only realy take a
gamble
lilke that if you are a fool.
My point was that once the 2-part paint has reacted, the isocyanates have
combined into a different, relatively inert form, and are no longer
poisonous.
Sort of like saying that although chlorine is nasty stuff, sodium chloride
(table salt) is relatively harmless. I don't think the isocyanates are
part of
the solvents; they are part of the reaction that makes this a catalyzed
paint.
I don't know the chemistry, but my impression from the literature is that
there
are no isocyanates left in properly catalyzed paint. They point out that
uncatalyzed paint must be disposed of as hazardous waste, but that if you
just
mix it in the proper ratio with the catalyst, then it is perfectly safe
and
legal to dispose of it with normal trash.
--
Jim Adney
jadney@vwtype3.org
Madison, WI USA
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