Abstract: Polymer for antifouling coatings which comprises units corresponding to the following monomers: A) 5 to 100 mol. % of one or more compounds of general formula (I) in which R=H or CH3; X=O or S; R1=Ph(R2)m, —C(H)3−(p+q)(CO—R)3p(COOR3)q, —(CH2)n−(CO)t—COOR3 or optionally substituted thiadiazolyl and thiazolylsulfamyl groups; Ph=phenyl; m=1-3; p=0-3; q=0-3; p+q=1-3; s=0 or 1; t=0 or 1; R2=each independently selected from halogen, —C(O)H, —COOR3, —CH2—COOR3, —O—R3 , —NH COOR3, —NH—CO—R3 and —NH2; R3=II or optionally halogen substituted alkyl, aryl, cycloalkyl, aralkyl groups with 1-10 C atoms; and B) 0 to 95 mol. % of one or more other ethylenically unsaturated compound.