For epoxies, it depends on the type of epoxy. E.g. 5 min Devcon and other 'fast' epoxies swell and fall apart after overnight in chloroform, whereas some "clear coat" epoxies used as protective layers for boats and cars may be quite resistant. I had a gel-coat epoxy-coated part soaked in chloroform for months, and it got attacked just on the surface. JBWeld swells in chloroform overnight.