NMP is already considered an SVHC. Doug Pauls Principal Materials and Process Engineer Rockwell Collins On Tue, Jul 17, 2018 at 12:06 PM, Dennis Fritz <[log in to unmask]> wrote: > NMP is climbing the ladder, both in the USA and Europe, toward > regulation. Be careful. > > On Tue, Jul 17, 2018 at 12:55 PM Steve Gregory <[log in to unmask]> wrote: > > > Hi Kate, > > > > Stripping Urethane coating as you know is very difficult to strip. If you > > have a stripper that works well on the urethane, you then have to be > > careful whether or not it will affect any other material on the > assembly. I > > found one that doesn't have potassium hydroxide in it. I've never used > it, > > so I don't know how well it works: > > > > https://www.miller-stephenson.com/product/conformal-coating-stripper/ > > > > These are the ingredients: > > > > Material > > CAS No. Approx. % > > 1,1,1,2,2,3,4,5,5,5-Decafluoropentane (HFC-43-10mee) > > 138495-42-8 22 - 30% > > Trans,1.2-Dichloroethylene > > 156-60-5 45 - 50% > > Methanol > > 67-56-1 4 - 10% > > N-Methyl-2-Pyrrolidone > > 872-50-4 18 - 22% > > > > When we had a big project where we had to rework a bunch of boards that > > were urethane coated, it was an engineering change where we had to remove > > and replace parts on boards that were urethane coated we purchased a > > micro-abrasion station from a company called CCR Co. > > > > http://www.ccrco.com/ > > > > I think I remember it being recommended by a Lockheed engineer. Anyways > the > > station worked great. The media used in the station is ESD safe which is > > something you need to worry about when using a media-blasting station. > > Urethane is best stripped when it is aged a bit. When it is freshly > applied > > the beads tend to bounce off. I remember if they didn't strip well I > would > > put them into an oven for a few hours to make the coating become a little > > harder so it would strip easier. > > > > Steve > > > > On Tue, Jul 17, 2018 at 5:45 AM, Ekaterina Stees < > [log in to unmask] > > > > > wrote: > > > > > Hello Technetters, > > > Does anyone know of a chemical remover for urethane conformal coat that > > > does not use potassium hydroxide as it's active ingredient? > > > > > > Thanks, > > > Kate > > > > > > > > > > > -- > > Steve Gregory > > Kimco Design and Manufacturing > > Process Engineer > > (208) 322-0500 Ext. -3133 > > > > -- > > > > > > > > This email and any attachments are only > > for use by the intended > > recipient(s) and may contain legally privileged, > > confidential, proprietary > > or otherwise private information. Any > > unauthorized use, reproduction, > > dissemination, distribution or other > > disclosure of the contents of this > > e-mail or its attachments is strictly > > prohibited. If you have received > > this email in error, please notify the > > sender immediately and delete the > > original. > > >