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US 10,767,076 B2Granted
Water-reducible coating composition
AssigneeSwimc LLC
InventorsThomas J. Melnyk, Michael A. Bauer
Life of this patent
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Abstract
The present description provides a water-reducible or water-dispersible coating system that can be used to form a durable, corrosion-resistant protective coating on a wide range of substrates. The coating system includes an alkyd resin prepared from a polyester feedstock that includes post-consumer recycled PET and a waste cooking oil feedstock. Methods for preparing the coating system and articles coated with the coating system are also described.
Claims12
A coated article, comprising;
- at least a portion of an exposed surface of a metal substrate;
- and
- a coating system applied to at least the exposed surface, wherein the coating system comprises:
- a water-reducible alkyd resin comprising the reaction product of
- about 65 to 75 wt % of a polyester feedstock comprising
- about 20 to 80% by weight of polyethylene terephthalate;
- about 1 to 10% by weight of a hydroxyl-functional compound;
- and
- about 1 to 20% by weight of a carboxyl-functional compound, based on the total weight of the polyester feedstock;
- and
- about 25 to 35 wt % of a waste cooking oil feedstock comprising yellow grease, brown grease, or mixtures thereof.
8 more elements
Dependencies are inferred from the claim text.