| 主权项 |
1. A system for forming a coating comprising a first composition and a second composition:
wherein the first composition comprises
i) one or more polyisocyanates and one or more polyalcohols that react to form a polyurethane, wherein said polyols have a molecular weight from about 150 to about 10,000 Daltons and an average molar hydroxyl functionality from about 2.0 to about 2.5,ii) one or more independently selected first particles having a size of about 30 μm to about 225 μm, wherein, when said first particles are present, the first composition comprises from about 0.01% to about 5% of said first particles by weight, andiii) one or more independently selected solvents; and wherein the second composition comprises
i) one or more independently selected second particles having a size of about 1 nm to about 25 μm, wherein said second particles comprise one or more independently selected hydrophobic and/or oleophobic moieties bound, either directly or indirectly, to said second particles, andii) one or more independently selected solvents, wherein, when said one or more solvents are present, said second particles may be present in a weight percent range selected from 0.1-5.0, based on the weight of the one or more solvents and second particles. |
