Aqueous chip resistant coating composition
AssigneeGrow Group, Inc.
InventorsDaniel M. Kivel, Gerhard M. Weber
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Abstract
Described is an aqueous chip resistant coating composition exhibiting a viscosity of at least 5,000 centipoise, preferably containing binders with a high molecular weight, preferably at least 20,000. Although these coatings may be applied to a variety of substrates, for coating electrocoated substrates the following eight binders are particularly preferred: ethylene vinyl acetate copolymer, carboxylated ethylene vinyl acetate, epoxy functional acrylic resin, carboxylated styrene-butadiene resin, carboxylated acrylic, hydroxy functional acrylic, self-crosslinking acrylic; and carboxylated PVC acrylic. Generally, it is preferred to apply the chip resistant coating via an airless spray and the heat curing the coating.
Claims20
An aqueous chip-resistant coating composition capable of being applied to a substrate, comprising (a) about 50 to about 90 percent by weight (pbw) film-forming latex binder selected from the group consisting of:
- (i) an ethylene vinyl acetate copolymer;
- (ii) a carboxylated ethylene vinyl acetate;
- (iii) epoxy functional acrylic resin;
- (iv) carboxylated styrene-butadiene resin;
- (v) carboxylated acrylic;
- (vi) hydroxy functional acrylic;
- (vii) self-crosslinking acrylic;
- and
- (viii) carboxylated polyvinyl chloride acrylic, and mixtures thereof, dispersed in the water;
- (b) about 10 to about 50 pbw filler mixed with the binder to form a composition having a viscosity of at least 5000 centipoise;
- and
- (c) an effective amount of a humectant.
Dependencies are inferred from the claim text.