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US 10,703,933 B2Granted
Coreactants for polyurea coatings
AssigneeThe Sherwin-Williams Company
InventorsPaul R. Baukema, Sanjay Luthra
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Abstract
A method to accelerate cure of a multicomponent coating composition is described herein, including the steps of providing an isocyanate and an isocyanate-reactive compound, and replacing a portion of the isocyanate-reactive compound with a compound of formula I:
Claims7
A method to accelerate cure of a polyurea coating, comprising:
- providing a first component including an isocyanate-functional component;
- providing a second component including a polyaaspartic ester as an isocyanate-reactive component;
- providing a coreactant component comprising tri-butyl citrate, wherein the tri-butyl citrate comprises up to 20% of the isocyanate-reactive component;
- and
- combining the isocyanate-functional component, the isocyanate-reactive component and the coreactant to produce a polyurea coating composition with accelerated cure and mixed viscosity (Gardner) of about A-1 to A-2.
2 more elements
Dependencies are inferred from the claim text.