| 摘要 |
A coating composition for the protection of substrates against environmental attack, comprising, in weight percent, from about 10% to about 30% of a film-forming polymer which is liquid at room temperature in the presence of not more than 25% solvents; up to about 20% of a corrosion inhibiting agent such as metal chromates, metal phosphates and/or metal molybdates; from 2% to about 5.5% of an amorphous pyrogenic silica having an average particle size less than 0.01 micron; from about 20% to about 50% of a crystalline silica having an oil absorption value of less than 20 measured by ASTM standard test D281-84; not greater than 25% of at least one solvent compatible with the polymer. The composition has a viscosity suitable for application by conventional equipment while also having a low volatile organic content.
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