Coating compositions, elastic barrier coatings formed therefrom, and methods of applying such coatings
AssigneePPG Industries Ohio, Inc.
InventorsJennifer Tamaki Jordan, Roxalana L. Martin, Dennis Leroy Faler
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Abstract
A coating composition that includes a polymer having (i) a barrier segment with aromatic groups and urethane linkages, urea linkages, or a combination thereof and (ii) an elastomeric segment that is different from (i). The barrier segment makes up at least 30 weight % of the polymer based on the total solids weight of the polymer. Further, the composition also includes an adhesion promoter having: (a) at least one epoxy functional polymer and a thiol functional crosslinker reactive with the epoxy functional polymer; and/or (b) a hydrazide functional component.
Claims32
A coating composition comprising:
- a polymer comprising:
- (i) a barrier segment comprising aromatic groups and urethane linkages, urea linkages, or a combination thereof;
- and (ii) an elastomeric segment that is different from (i), wherein the barrier segment comprises at least 30 weight % of the polymer based on the total solids weight of the polymer;
- and
- an adhesion promoter comprising:
- (a) at least one epoxy functional polymer and a thiol functional crosslinker reactive with the epoxy functional polymer;
- and/or (b) a hydrazide functional component.
Dependencies are inferred from the claim text.