Bare or zinc-coated steel sheet used for automobile construction comprising a layer of zinc or zinc alloy containing a polymer comprising specified units and optionally polyallyl units

摘要

A sheet of bare or zinc-coated steel which is additionally coated on at least one of its faces with a single layer of zinc or zinc alloy containing 0.15-1 wt.% of a polymer consisting of 6-150 identical or different units of specified formula and optionally comprising polyallyl units. The units are of Formula -(CH2-C(R)(CONH2))- R = H, CH3