The influence of inoculation degree of acrylontrile and methacrylic acid on firmness of adhesion  link  of ethylene graftcopolymers on stage of copolymerization  is being studied. It  is shown that maximum adhesion firmness of inoculation-filled  compositions is observed in the samples with  26–33% concentrations of a filler. As well it is established that with  an increase of  concentration of amorphous component (a ruber) in the  composition of  graft copolymers monotonous decrease of adhesion firmness  is  observed