citraconic acid and the like the acid group containing monomer is preferably present in the polymer in amounts of about 3 to 25 percent more preferably from about 5 to 20 percent by weight based on total weight of the monomers amounts less than 3 percent result in poorer solvent resistance and poorer mechanical strength of the coating examples of vinyl aromatic compounds are monofunctional vinyl aromatic compounds such as styrene which is preferred toluene and alkyl substituted styrenes such as toluene and chloro substituted styrene such as chlorostyrene the vinyl aromatic monomer is preferably present in the composition in amounts of about 25 to 75 more preferably from about 40 to 75 percent by weight based on total weight of the monomers amounts less than 25 percent result in poor detergent resistance whereas amounts greater than 75 percent result in poor flexibility examples of the esters of the alpha beta ethylenically unsaturated acids are esters of acrylic and methacrylic acid and include methyl methacrylate ethyl acrylate butyl acrylate 2 ethylhexyl acrylate dodecenyl acrylate methyl methacrylate ethyl methacrylate n butyl methacrylate and 2 ethylhexyl methacrylate preferably these esters are present in amounts of about 5 to 70 more preferably from about 10 to 50 percent by.