polyurethane catalyst pc-41: the unsung hero of shipshape insulation (and avoiding a titanic-sized disaster) 🚢 let’s talk about insulation. not the kind where you wrap yourself in a blanket and binge-watch netflix (though that’s important too!). we’re talking about the industrial-strength, keep-the-heat-in (or out!) kind that’s crucial for, say, keeping a ship’s engine room from...