Composition and coating for hydrophobic performance

摘要

The present disclosure describes compositions comprising an acrylic polymer binder and nano-particles less than about 100 nm that provide a hydrophobic or superhydrophobic coating that may also display oleophobicity. The coating composition may advantageously be prepared using VOC exempt compounds that are compatible with a variety of surface materials including many electronic components. In addition, the coating composition may also be rapidly dried rendering it useful for the rapid preparation of coated objects and surfaces in manufacturing/assembly line environments.

主权项

1. A composition for coating surfaces and objects giving rise to a hydrophobic coating comprising: an acrylic binder, nano-particles from about 8 nm to about 100 nm associated covalently or non-covalently with alkyl or fluoroalkyl groups, and a solvent, wherein the solvent comprises acetone, t-butylacetate and/or combinations thereof
wherein, when the composition is applied in an amount of about 2.5 square meters/liter on a substantially planar aluminum test plate that is held substantially constant at a temperature of approximately 23° C., such application being divided into a series of five sprays, each such spray comprising about one-fifth of the total composition, the composition produces within sixty seconds following each spray a coating that does not transfer to or stick to a surface brought in contact with the coated area, wherein the drying of the spray is not accelerated by heating or forced air circulation, provided that the solvent in the composition can freely evaporate.