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US 12,024,645 B2Granted
Chromate free pretreatment primer
AssigneePRC-DeSoto International, Inc.
InventorsDidier Labouche, Marie-Noelle Maillet, Siamanto Abrami
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Abstract
A coating comprising epoxy functional resin, corrosion resistant particles, and a multi-functional crosslinker are disclosed as are methods of using such a coating to coat at least a portion of a substrate and a substrate coated thereby.
Claims18
A solvent-borne coating composition comprising:
- (a) a first component comprising:
- (i) an epoxy functional resin;
- and
- (ii) a corrosion resisting particle comprising MgO;
- and
- (b) a second component comprising a crosslinker having a first functionality that crosslinks with the epoxy functionality of the first component and a second functionality that self-crosslinks, wherein the first functionality that reacts with the epoxy functionality of the first component comprises thiol, and where the MgO comprises 10 to 50 wt. % of the coating composition, and the crosslinker comprises 11 to 70 wt. % of the coating composition with wt. % based on total solids.
3 more elements
Dependencies are inferred from the claim text.