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, where the solvent comprises a VOC-exempt compound selected from acetone, t-butylacetate and/or combinations thereof;
wherein the acrylic binder comprises: a MMA polymer or copolymer; BMA polymer or copolymer; EMA polymer or copolymer; MMA/BMA copolymer; MMA/EMA copolymer; or a BMA/EMA copolymer; and wherein when the composition is applied at a rate of 2.5 square meters/liter, such application being divided into a series of five spray applications, each such spray application 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 hydrophobic coating, 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. |