Patent ID: 8466230

Claim:
A polyurethane polymer dispersion comprising: an aqueous carrier; and polyurethane polymer comprising: a plurality of urethane linkages; a plurality of cycloaliphatic groups incorporated into the polyurethane polymer through cyclohexane diacid, non-isocyanate compounds, wherein at least one of the plurality of cycloaliphatic groups comprises a cyclohexane ring structure and two divalent linkage ester groups that attach the cyclohexane ring structure to other portions of the polyurethane polymer; a plurality of salt or salt-forming groups; and a plurality of air-curable ethylenically unsaturated groups; wherein a combined concentration of the plurality of cycloaliphatic groups incorporated into the polyurethane polymer through cyclohexane diacid, non-isocyanate compounds and the plurality of air-curable ethylenically unsaturated groups constitutes at least about 30 percent by weight of the polyurethane polymer, based on a total dry weight of the polyurethane polymer; and wherein the plurality of cycloaliphatic groups incorporated into the polyurethane polymer through cyclohexane diacid, non-isocyanate compounds constitute at least about 4 percent by weight of the polyurethane polymer, based on the total dry weight of the polyurethane polymer; and wherein the polyurethane polymer dispersion has less than 10% by weight of volatile organic compounds.