Poly(ethylenically unsaturated alkoxy) heterocyclic protective coatings

A coated substrate comprising a substrate having adhered on at least one surface thereof a crosslinked polymeric coating having at least 15% by weight of the polymeric coating derived from a poly(ethylenically unsaturated alkoxyalkyl)heterocyclic compound of the formula:

• A.sup.1 --Z--A.sup.2
• wherein A.sup.1 and A.sup.2 are independently groups having the formula ##STR19## wherein R and R.sup.2 are independently hydrogen or methyl,
• R.sup.1 is the residue of an aliphatic polyol group having m+1 primary hydroxyl groups and 1 to 10 carbon atoms, said residue being formed by the removal of hydroxyl groups from the polyol, and having a valence of m+1,
• R.sup.3 is selected from hydrogen, ##STR20## wherein R.sup.4 is an alkenyl or alkyl group, and R.sup.5 is an aliphatic or aromatic group of up to 8 carbon atoms,
• m is an integer of 2 to 5, and
• Z is a heterocyclic group of the formula ##STR21## wherein X is a divalent group which is required to complete a 5- or 6-membered heterocyclic ring.