acrylate ethoxyethyl acrylate hexylthioethyl acrylate methyl methacrylate ethyl methacrylate butyl methacrylate glycidyl methacrylate and the like and including esters of maleic and fumaric acid and the like amides of the u03b1 u03b2 olefinically unsaturated carboxylic acids such as acrylamide and the like divinyls diacrylates and other polyfunctional monomers such as divinyl benzene divinyl ether diethylene glycol diacrylate ethylene glycol dimethacrylate methylene bis acrylamide allyl pentaerythritol and the like and bis u03b2 chloroethyl vinyl phosphonate and the like the vinyl chloride and vinylidene chloride polymer in addition to the dodecyl 1 12 diammonium dimolybdate additive may contain the usual compounding ingredients known to the art such as fillers stabilizers opacifiers lubricants processing aids impact modifiers plasticizers antioxidants and the like smoke retardancy may be measured using an nbs smoke chamber according to procedures described in astm e662 79 34 test for specific optical density of smoke generated by solid materials 34 maximum smoke density d m is a dimensionless number and has the advantage of representing a smoke density independent of chamber volume specimen size or photometer path length provided a consistent dimensional system is used percent smoke reduction is calculated using the equation equ1 the term 34 dm g 34 means maximum smoke.