Trial #1
To evaluate Methyl 408 and Ethyl 408 on their removal effectiveness of paints and coating
Varius substrates were coated with lead paint, urethane, varnish, water-based paint, solvent-based paint and powder coated paint. Each paint stripper was applied to the surface and observations were made over time to see the extent of removal. In some cases, coating was scraped off using a handheld paint scraper, Final observations were made and compared to methylene chloride and NMP based paint strippers.
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
Both chemicals are better at removal of paint after longer periods of contact on the substrates.
No relation