DURABLE AQUEOUS COMPOSITIONS FOR USE IN MAKING TRAFFIC MARKINGS HAVING GOOD DIRT PICKUP RESISTANCE AND TRAFFIC MARKINGS MADE THEREWITH

摘要

The present invention provides aqueous compositions useful in making traffic markings having early dirt pickup resistance which comprise one or more vinyl or acrylic emulsion polymers having a measured glass transition temperature (measured Tg) of from −10 to 60° C., preferably 20° C. or higher, (ii) from 3 to 15 wt. %, or, preferably, from 6 to 12 wt. %, as solids based on total polymer solids, of one or more polyurethane dispersions (PUD), (iii) one or more coalescent having a normal boiling point of from 150 to 300° C., and (iv) one or more fillers, extenders and/or pigments, preferably an opacifier pigment and one or more extenders, wherein the composition has a percent pigment volume concentration (% PVC) of from 45 to 80%, preferably from 45 to 65%.

主权项

1. An aqueous composition for use in traffic markings comprising (i) one or more vinyl or acrylic emulsion polymers having a measured glass transition temperature (measured Tg) of from −10 to 60° C., (ii) from 3 to 15 wt. %, based on total polymer solids, of one or more polyurethane dispersions (PUD), (iii) from 4.0 to 30 wt. %, based on total polymer solids, of one or more coalescent having a normal boiling point of from 150 to 300° C., and (iv) one or more fillers, extenders and/or pigments, wherein the composition has a percent pigment volume concentration (% PVC) of from 45 to 80%.