Corrosion-Resistant TGIC Primer Coating
AssigneeValspar Sourcing, Inc.
InventorsThomas E. Reno, Wenjing Zhou
Life of this patent
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Abstract
Methods, formulations, and systems for coating metal substrates are provided. The methods and systems include application of TGIC-based powder coatings that demonstrate excellent corrosion resistance when exposed to outdoor conditions, as demonstrated by cyclic corrosion testing.
Claims6
A system for improving the corrosion resistance of an exterior weatherable powder coating, comprising a powder formulation, the formulation comprising
- a TGIC-reactive polymeric binder;
- and
- about 1 to 10 wt % of a saturated, high molecular weight (Mn) non-reactive polyester, based on the total weight of the formulation, wherein corrosion resistance of a cured coating formed from the formula is improved by 40% over a standard powder coating, when subjected to cyclic corrosion testing.
A formulation for improving the corrosion resistance of an exterior weatherable powder coating, comprising
- a TGIC-reactive polymeric binder;
- and
- about 1 to 10 wt % of a saturated, high molecular weight (Mn) non-reactive polyester, based on the total weight of the formulation, wherein corrosion resistance of a cured coating formed from the formula is improved by 40% over a standard powder coating, when subjected to cyclic corrosion testing.
A method for improving the corrosion resistance of an exterior weatherable powder coating, comprising
- providing a substrate;
- applying a powder coating formulation, the formulation comprising a TGIC-reactive polymeric binder;
- and
- about 1 to 10 wt % of a saturated, high molecular weight (Mn) non-reactive polyester, based on the total weight of the formulation;
- curing the applied powder coating formulation to form a cured coating;
- and
- testing the cured coating by cyclic corrosion testing,
- wherein corrosion resistance of the cured coating is improved by 40% over a standard powder coating, when subjected to cyclic corrosion testing.
Dependencies are inferred from the claim text.