michael & nolan :
i don't know whether waterborne paints are safer, but i do know that
there are people out there who say that they are not. the idea is that
water can be absorbed through the skin more than solvents can. !!! like i
said, nothing is ever easy.
fred zampa
-----Original Message-----
From: Michael D. Porter [mailto:mporter@zianet.com]
Sent: Thursday, March 01, 2001 8:44 PM
To: Nolan Penney
Cc: shop-talk@autox.team.net; harry_phinney@hp.com
Subject: Re: Isocyanates and activated charcoal adsorption (long)
Nolan Penney wrote:
>
> http://www.osha-slc.gov/SLTC/isocyanates/index.html
>
> Read the links to your hearts content. :-)
One of the things I'd completely forgotten during this discussion is
that some companies (only one I know of for sure is PPG) have been
introducing, in the last year or two, water-based urethanes and
polyurethanes. These are purported to be environmentally safer, but I
have no idea whether that is a matter of kind or degree, or whether or
not their use still requires the same level of protective equipment
(separately-sourced breathing air, etc.).
We have introduced these water-based paints in our production process,
and to date, the only noticeable change in quality is a somewhat greater
tendency to orange peel, especially when applied with HVLP guns. Whether
they are fundamentally safer during application, I cannot say. When I
get a little spare time, I'll try to locate MSDS sheets on these new
paints.
///
/// shop-talk@autox.team.net mailing list
///
|