dibutyltin mono(2-ethylhexyl) maleate: a high-performance lubricant for pvc processing introduction dibutyltin mono(2-ethylhexyl) maleate, often abbreviated as dbtm, is an organotin compound widely utilized as a lubricant in the processing of polyvinyl chloride (pvc). its superior lubricating properties, combined with its inherent stabilizing effect, make it a crucial additive in various pvc applications, ranging from rigid...