| 摘要 |
Described herein is a composition comprising at least 10 percent by weight of water and, based on the weight of components (a), (b), and (c); (a) 0 to about 95 percent by weight of a water-compatible polymer having at least two pendant carboxylate groups; (b) 1 to about 60 percent by weight of a polymeric polycarboxylate polymer different from (a) having (1) at least two pendant carboxylate groups and (2) at least one internal amide, thioamide, urea, thiourea, biuret, dithiobiuret, or urethane group; and (c) 2 to about 70 percent by weight of a polyfunctional crosslinking agent having an ionic or potentially ionic moiety counter ion capable of reacting with the carboxylate groups of (a) and (b). Component (b) may also contain fluoroalkyl groups. The composition of the invention provides a water-based coating which, when deposited on a surface to be coated and allowed to dry and form a crosslinked polymer, has a high degree of wear resistance, hardness, and impact resistance.
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