I am looking for a suitable organic solvent for dissolving dried-on polyurethane adhesive on a substrate of nylon/butyl/polyester. Acetone is ruled out because it attacks polyester (PET) and Toluene is ruled out because it attacks butyl rubber. From what I can tell, nylon (PA) seems to resist everything!

It’s been a while since I took organic chemistry. Does anyone know of an organic solvent that fulfills the following mandatory properties at standard temperature & pressure:

  1. It MUST dissolve polyurethane (PU)
  2. It must NOT dissolve nylon (PA)
  3. It must NOT dissolve polyester (PET)
  4. It must NOT dissolve butyl rubber
  • $\begingroup$ How about chloroform? $\endgroup$ Oct 13 at 20:37
  • $\begingroup$ I don't think it's possible in the way you imagine. $\endgroup$
    – Mithoron
    Oct 13 at 21:29

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