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US 2022/0356369 A1Published application
Low-voc pigmented coating compositions for high humidity environments
AssigneeCovestro LLC
InventorsKurt E. Best, Daniel P. Wang, John F. Brandt
Life of this patent
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Abstract
A coating composition can include an aliphatic polyisocyanate and a polyaspartate combined at an equivalent ratio of from 0.9 to 1.8, the aliphatic polyisocyanate having an NCO % of from 6 wt % to 25 wt % based on ISO 11909:2007. The coating composition can also include a pigment at a pigment to binder ratio of from 0.05 to 1.3, a drying agent in an amount of from 0.5 wt % to 5 wt % based on a total weight of the coating composition, and a bismuth compound. The coating composition can have a total solvent content of less than or equal to 250 g/L.
Claims20
A coating composition, comprising:
- an aliphatic polyisocyanate and a polyaspartate combined at an equivalent ratio of from 0.9 to 1.8, the aliphatic polyisocyanate having an NCO % of from 6 wt % to 25 wt % based on ISO 11909:2007;
- a pigment at a pigment to binder ratio of from 0.05 to 1.3;
- a drying agent in an amount of from 0.5 wt % to 5 wt % based on a total weight of the coating composition;
- and
- a bismuth compound,
- wherein the coating composition has a total solvent content of less than or equal to 250 g/L.
3 more elements
Dependencies are inferred from the claim text.