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Trial Number 1

Trial Purpose:

To evaluate Methyl 408 and Ethyl 408 on their removal effectiveness of paints and coating

Date Run:

06/11/2015

Experiment Procedure:

Varius substrates were coated with lead paint, urethane, varnish, waterbased paitn, solvent based paint and powder coated paint. Each paint stripper was applied to the surface and obsevations were made over time to see the extent of removal. In some cases, coating was scapped off using a hand held paint scapper, Final observations were made and compared to methylene chloride and nmp based paint strippers.

Trial Results:

Methyl 408 and Ethyl 408 are not efficient at removing paint from wood substrates. If left out overnight on urethane, a sticky layer coats the entire wood and makes an accurate gravimetric measurement impossible. However, on varnishes, when left on for 150 minutes (+), it shows signs of decent removal of varnishes without the sticky layer. Both of these chemicals are better suited for metal paint stripping for solvent, water base, and varnishes. Methylene Chloride barely removed the powder coated paint on the metal tested. More testing on powder coated paints would be needed.

Cleaning Category Paint Stripping              
Soil type Lead Urethane Urethane Varnish Water base Solvent base powder coated  
Substrate Wood Wood Stainless Stainless  Wood Aluminum Aluminum Aluminum
Methyl 408 NE NE ME ME SE ME VE NE
Ethyl 408 NE NE VE ME SE VE VE NE

NE – Not effective

SE – Slightly effective

ME – Mostly effective

VE – Very effective

Success Rating:

Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.

Conclusion:

Both chemicals are better at removal of paint after longer periods of contact on the substrates.

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