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US 2008/0075871 A1Published application
Low temperature, moisture curable coating compositions and related methods
AssigneePPG Industries Ohio, Inc.
InventorsRonald R. Ambrose, Anthony M. Chasser, Susan F. Donaldson, Gregory J. McCollum
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Abstract
Disclosed are low temperature, moisture curable coating compositions, related coated substrates, and methods for coating a substrate. The coating compositions include an ungelled, secondary amine-containing Michael addition reaction product of reactants including a compound comprising more than one site of ethylenic unsaturation, and an aminofunctional silane.
Claims20
A coating composition comprising:
- (1) an ungelled, secondary amine-containing, Michael addition reaction product of reactants comprising:
- (a) a compound comprising more than one site of ethylenic unsaturation, and
- (b) an aminofunctional silane;
- (2) a Michael addition reaction product of reactants comprising:
- (a) a compound comprising one site of ethylenic unsaturation, and
- (b) an aminofunctional silane;
- and
- (3) a compound comprising functional groups reactive with the secondary amines of component (1) and/or (2).
5 more elements
A method for coating a substrate comprising:
- (1) combining the contents of a first package and a second package, wherein
- (A) the first package comprises:
- (a) an ungelled, secondary amine-containing, Michael addition reaction product of reactants comprising:
- (i) a compound comprising more than one site of ethylenic unsaturation, and
- (ii) an aminofunctional silane;
- and
- (b) a Michael addition reaction product of reactants comprising:
- (i) a compound comprising one site of ethylenic unsaturation, and
- (ii) an aminofunctional silane;
- moisture scavenger,
- (B) the second package comprises a compound comprising functional groups reactive with the secondary amines present in the first package;
- (2) applying the combination formed in step (1) onto at least a portion of the substrate;
- (3) allowing the combination to coalesce form a substantially continuous film;
- and
- (4) allowing the combination to completely cure within 24 hours in the presence of air having a relative humidity of 10 to 100 percent and a temperature of −10 to 120° C.
12 more elements
A coating composition comprising:
- (1) an ungelled, secondary amine-containing, Michael addition reaction product of reactants comprising:
- (a) a compound comprising more than one site of ethylenic unsaturation, and
- (b) an aminofunctional silane;
- (2) a Michael addition reaction product of reactants comprising:
- (a) a compound comprising one site of ethylenic unsaturation, and
- (b) an aminofunctional silane;
- (3) a moisture scavenger;
- and
- (4) a compound comprising functional groups reactive with the secondary amines of the Michael addition reaction product, wherein
- a completely cured coating deposited from the composition is resistant to cracking when applied so as to result in a dry film thickness of up to 20 mils.
7 more elements
Dependencies are inferred from the claim text.