[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: Replacement for MEK



Hi Tammy,

I just did some work researching alternative cleaners for adhesive removal, 
using Hansen Solubility Parameters (HSP) to help match cleaners to resins. 
According to HSP, a 50:50 blend of DuPont DBE (di-basic ester) and 
propylene carbonate should perform very similarly to MEK.

You can learn more about DBE on
http://www.dbe.dupont.com/

You can learn about HSP in general on:
http://wwwchem.murdoch.edu.au/staff/barton/parameters.html

Good luck,
Todd


At 08:06 AM 1/10/02 -0500, you wrote:
>Tammy,
>I'm copying your question to <mailto:printech@great-lakes.net>. If not
>subscribed to printech, you may wish to check it out or explore the Printers
>National Environmental Assistance Center (PNEAC) at <http://www.pneac.org/>
>Like p2tech, there is a searchable archive.
>Ric
>         -----Original Message-----
>         From: Tammy Allen [mailto:tallen@co.pinellas.fl.us]
>         Sent: Wednesday, January 09, 2002 10:31 AM
>         To: p2tech@great-lakes.net
>         Subject: Replacement for MEK
>
>         Can anyone identify a potential alternative cleaning solvent for MEK
>in the following application:
>         A facility is trying to eliminate the use of MEK in cleaning, but
>has hit a snag in their screen cleaning (screen printing). The inks they use
>are MEK-based and cannot be changed currently due to their government
>customer specs. The MEK is wiped on an 8x8 screen. So far, they tried ethyl
>acetate, but it dissolved the PVA in the screen. Now they are trying
>acetone, but the employees complain of smell and health hazards. Any
>suggestions on a solvent that is safe and could quickly remove an MEK-based
>ink without hurting PVA-based materials?
>         Thank you for any assistance,
>         Tammy L. Allen
>         Senior Environmental Specialist
>         Pinellas County Environmental Management
>         512 S. Ft. Harrison Ave.
>         Clearwater, FL 33763
>         (727) 464-4761
>         Fax (727) 464-3174
>         e-mail: tallen@co.pinellas.fl.us <mailto:tallen@co.pinellas.fl.us>