Patent ID: 8686081
Filing Date: 2014-04-01
Classification: C09G

Abstract:
1. An aqueous coating composition comprising: (a) ions of calcium, magnesium, or a combination thereof; and (b) at least one polymer comprising polymerized residues of: (i) from 0.5 to 7 wt % of at least one complexing monomer having a log stability constant for calcium or magnesium from 0.3 to 4 and which is phosphoethyl methacrylate; (ii) from 5 to 15 wt % methacrylic acid; and (iii) from 0.2 to 3 wt % of at least one crosslinker which comprises two or more ethylenically unsaturated groups; wherein the polymer has a Tg from 50 to 110° C.