dibutyltin mono(2-ethylhexyl) maleate: a comprehensive review for rigid pvc profile extrusion stabilization introduction dibutyltin mono(2-ethylhexyl) maleate (dbm-ehm), also referred to as dibutyltin monoethylhexyl maleate, is an organotin compound widely employed as a heat stabilizer in the production of rigid polyvinyl chloride (pvc) profiles through extrusion. its efficacy in preventing thermal degradation during pvc processing, coupled...