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Old February 12th 04, 05:20 AM
Dave Platt
 
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In article , wrote:

Cyanide based?


Yup - isocyanates.

Most of the better aircraft paints (for metal; fabic is different) are
polyurethane enamels. Polyurethane mists require masks, but an air
pump 30' away, hardly.


According to the MSDS, some of the Dupont Imron paint formulations
contain an isocyanate, or use an added isocyanate activator/hardener.
This also seems to be true for some of the two-part "linear
polyurethane" finishes from other manufacturers, as well. The
isocyanates can cause a permanent sensitization of the lungs - a
chemically-induced asthma. Think "Super-glue fumes, in giant
industrial-sized portions" and you're probably in the right ballpark.

For these formulas, the MSDS specifies the use of a positive-pressure,
supplied-air respirator. Filter-type masks are not adequate.

It looks as if some of the Imron paints don't use isocyanates, and an
air-purifying respirator with organic-vapor filter cartridges is
stated to be sufficient.

http://www.bronkalla.com/upkeep/spray_imron.htm is interesting
reading, written by a boat builder/refinisher who used used a clear
Imron above the waterline.

Sure looks as if this stuff is something to be _very_ careful with...
read the MSDS, follow the instructions, observe all precautions, etc.
The idea of shopping out the job to a local body-shop which is already
set up for it is a good one, if you can find one in your area.

--
Dave Platt AE6EO
Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior
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