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<DIV><SPAN class=015294115-25072003><FONT face=Arial color=#0000ff size=2>On the
fuel proof aura, if you clear coat with the Concept paint after putting down the
colors in Lusterkote, then you should have a fuel proofed finish - or is that a
bad assumption. </FONT></SPAN></DIV>
<DIV><SPAN class=015294115-25072003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=015294115-25072003><FONT face=Arial color=#0000ff
size=2>Also, is it correct to surmise that the spray can paint
(Lusterkote) does not have the nasty isocyanate? </FONT></SPAN></DIV>
<DIV><SPAN class=015294115-25072003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=015294115-25072003><FONT face=Arial color=#0000ff
size=2>-DD</FONT></SPAN></DIV>
<DIV><SPAN class=015294115-25072003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<BLOCKQUOTE>
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> Gray E Fowler
[mailto:gfowler@raytheon.com]<BR><B>Sent:</B> Friday, July 25, 2003 10:28
AM<BR><B>To:</B> discussion@nsrca.org<BR><B>Subject:</B> Re: PPG Concept
safety<BR><BR></FONT></DIV><BR><FONT face=sans-serif size=2>Other than
solvent....practically inert. Stuff in a can is a solid resin cut in solvent
to make it liquid. Spray it on- solvent evaporates and leaves a resin film
filled with pigments and such. This paint "drys" -the evaporation of solvent.
Concept "drys" then "cures". The curing gives the properties we desire-paints
that dry only really are not fuel proof, just resistant....including dope.
Methanol is not a "good" solvent (like acetone is) but since this is our fuel
it is what we concern ourselves with (and nitro)....so our single component
paints have an aura of fuel proofness to them.</FONT> <BR><BR><FONT
face=sans-serif size=2>hows dat?<BR><BR><BR><BR>Gray Fowler<BR>Principal
Chemical Engineer<BR>Composites Engineering</FONT> <BR><BR><BR>
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<TD><FONT face=sans-serif size=1><B>"Wayne Galligan"
<wgalligan@goodsonacura.com></B></FONT> <BR><FONT face=sans-serif
size=1>Sent by: discussion-request@nsrca.org</FONT>
<P><FONT face=sans-serif size=1>07/25/2003 09:56 AM</FONT> <BR><FONT
face=sans-serif size=1>Please respond to discussion</FONT> <BR></P>
<TD><FONT face=Arial size=1> </FONT><BR><FONT
face=sans-serif size=1> To:
<discussion@nsrca.org></FONT> <BR><FONT
face=sans-serif size=1> cc:
</FONT> <BR><FONT face=sans-serif size=1>
Subject: Re: PPG Concept
safety</FONT></TR></TBODY></TABLE><BR><BR><BR><FONT face=Arial size=2>OK now
elaborate on the can sprays like Lusterkote and Century 21 sprays...</FONT>
<BR><FONT face="Times New Roman" size=3> </FONT> <BR><FONT face=Arial
size=2>Man youse smart....</FONT> <BR><FONT face="Times New Roman"
size=3> </FONT> <BR><FONT face=Arial size=2>WG</FONT> <BR><FONT
face="Times New Roman" size=3>----- Original Message ----- </FONT><BR><FONT
face="Times New Roman" size=3><B>From:</B> </FONT><A
href="mailto:gfowler@raytheon.com"><FONT face="Times New Roman" color=blue
size=3><U>Gray E Fowler</U></FONT></A><FONT face="Times New Roman" size=3>
</FONT><BR><FONT face="Times New Roman" size=3><B>To:</B> </FONT><A
href="mailto:discussion@nsrca.org"><FONT face="Times New Roman" color=blue
size=3><U>discussion@nsrca.org</U></FONT></A><FONT face="Times New Roman"
size=3> </FONT><BR><FONT face="Times New Roman" size=3><B>Sent:</B> Friday,
July 25, 2003 9:49 AM</FONT> <BR><FONT face="Times New Roman"
size=3><B>Subject:</B> RE: PPG Concept safety</FONT> <BR><BR><FONT
face=sans-serif size=2><BR>Concerning Concept paint.........Here is my 3.5
cents worth. The OSHA reference is good but remember this is a workplace
regulation which means it is written as a CYA kinda thing. They assume that if
you are using any chemical then you are being exposed to it for 8 hours a day
because that is your job. Based on that they set limits. In reality a guy
painting a toy airplane at his house never entered into the realm of
OSHA thinking.</FONT><FONT face="Times New Roman" size=3> </FONT><FONT
face=sans-serif size=2><BR>So!.....there are two problems that the average
pattern geek need to be concerned with, Solvent exposure and isocyanate
exposure. Dermal exposure (aka skin for those of you who do not "dig" tech
speak) should not be a concern because you should be outside letting the
overspray drift away from you and onto your neighbors car, or second, if you
are inside you better get a bigger fan. If not you will be sticky and that is
the biggest dermal problem....(imagine if you did this 8 hrs a day! you would
be UV resistant and not require sunscreen at contests-thats a positive way to
look at it). In short...you ain't gonna die...if you do its not my fault. In
an overspray situation the solvents will be nearly gone by the time is hits
your skin. The small amount that of isocyanate on your skin will not cause any
significant problems...but do not get coated with the overspray-change your
situation.</FONT><FONT face="Times New Roman" size=3> <BR></FONT><FONT
face=sans-serif size=2><BR>The real problem is breathing the
overspray-isocyanate much worse than solvent. Solvent inhalation problems take
alot of solvent for a long period of time. (Think about your cousin the
glue/paint sniffer and how long he has managed to survive half intact directly
breathing huge concentrations of solvents). Breathing the solvent from Concept
once or twice a year once again will not kill you. Minimize your exposure and
if you have a respirator use it. The major breathing problem is the
isocyanate. It is nasty and as a matter of fact so nasty that you and I as
pattern geeks are technically not supposed to even have this paint in our
possession. But hey...... we are relatively smart guys with big egos and we
know how to deal with 30% nitro so this should be no problem
.....right?</FONT><FONT face="Times New Roman" size=3> <BR></FONT><FONT
face=sans-serif size=2><BR>The moment isocyanate comes in contact with your
body's mucous membranes (the WET slimy parts of carbon based units) the
isocyanate reacts into a crystalline structure (in your lungs) and it aint
coming out any time soon. Over exposure will give the shortness of breath and
flu like symptoms.</FONT><FONT face="Times New Roman" size=3> </FONT><FONT
face=sans-serif size=2><BR>If you have breathing problems or smoke this will
be greatly worse.</FONT><FONT face="Times New Roman" size=3> <BR></FONT><FONT
face=sans-serif size=2><BR>Bad news...</FONT><FONT face="Times New Roman"
size=3> <BR></FONT><FONT face=sans-serif size=2><BR>"Dust" masks will not
protect you from solvent or isocyanate exposure.</FONT><FONT
face="Times New Roman" size=3> </FONT><FONT face=sans-serif size=2><BR>That
respirator you bought last year that has been used twice will not protect you
either-unless you have new cartridges on it. If you paint a plane every 3
months you had better have new cartridges every time IF you are breathing the
overspray.</FONT><FONT face="Times New Roman" size=3> </FONT><FONT
face=sans-serif size=2><BR>Try not to inhale the overspray....me- I am an
expert at holding my breath while painting. Of course anything that reduces
the overspray, or gets it outta your way is good.</FONT><FONT
face="Times New Roman" size=3> <BR></FONT><FONT face=sans-serif
size=2><BR><BR><BR><BR><BR>Gray Fowler<BR>Principal Chemical
Engineer<BR>Composites Engineering</FONT> <BR><BR></BLOCKQUOTE></BODY></HTML>