Systems to reduce skinning of coating compositions
AssigneeSwimc LLC
InventorsStacy L. CONTE, Brandon J. GRANT, Olga SOFIANOS, Phyliss MANCE
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Abstract
Systems and methods for reducing in-container skinning of a coating composition include an optional float disposed on top of an aqueous coating composition in a can and a hydrophobic evaporation suppressing layer disposed on top of the float layer or the coating composition, the hydrophobic evaporation suppressing layer or monolayer being relatively impermeable to water vapor and having a composition that allows it to spread in a thin layer on the float or the coating composition, thereby reducing in-container evaporation.
Claims22
1-38. (canceled)
A system for reducing in-can skinning of a coating composition in a container comprising:
- an aqueous coating composition that includes at least a binder and optionally a pigment;
- and
- optionally disposed on top of the aqueous coating composition, a float layer;
- and
- disposed on top of the aqueous coating composition or if present, the float layer, a hydrophobic evaporation suppressing layer;
- wherein the hydrophobic evaporation suppressing layer comprises:
- one or more polyisobutylene polymers in an amount of about 20 to about 95 weight percent based on the weight of the evaporation suppressing layer;
- one or more silicone polymers in an amount of about 0 to about 20 weight percent based on the weight of the evaporation suppressing layer;
- one or more carriers in an amount of about 0 to about 20 weight percent based on the weight of the evaporation suppressing layer;
- one or more surfactants in an amount of about 0 to about 10 based on the weight of the evaporation suppressing layer;
- and
- one or more stabilizers present in an amount of 0 to 5 weight percent based on the weight of the evaporation suppressing layer.
Dependencies are inferred from the claim text.