Formulation for producing low infrared coating in the 2-15 micron range

DETAILED DESCRIPTION What is claimed is: 1.
A diffuse gray coating mixture having a low infrared emittance and comprising by weight: from about 10% to about 22% coarse non-leafing aluminum powder; from about 2% to about 15% cobalt metal; from about 2% to about 5% cobalt oxide; from about 7% to about 20% titanium dioxide; from about 65% to about 75% silicone alkyd resin and from about 1% to about 4% polarized montmorrilite clay.
2.
The coating mixture of claim 1, wherein said coating mixture is thinned with a mineral spirits thinner.
3.
The coating mixture of claim 1, wherein the particles of said coating mixture have a particle fineness of less than 6 Hegman scale.
4.
A diffuse gray coating mixture having a low infrared emittance and comprising by weight: from about 10% to about 22% non-leafing aluminum powder; from about 2% to about 15% cobalt metal; from about 2% to about 5% cobalt oxide; from about 7% to about 20% titanium dioxide; from about 65% to about 75% silicone alkyd resin and from about 1% to about 4% dispersing agent for suspending the pigment materials of aluminum powder, cobalt metal, cobalt oxide and titanium dioxide in the silicone alkyd resin and preventing said pigment materials from settling out of suspension.




Description:
BACKGROUND OF THE INVENTION This invention relates to a coating for surfaces and in particular to a coating having high infrared solar reflectance properties.
Previously used camouflage coatings or paint, especially for use on hulls of Naval vessels, exhibit relatively high solar absorption because of the dark colors and diffused finishes characteristic of the coatings.
High solar absorption necessarily results in high surface temperatures which increase cooling requirements and more importantly increase infrared radiation.
In modern warfare infrared detection techniques have become highly developed and means for counter-detection techniques are required.
Artificial cooling of hot exposed surfaces is effective to reduce infrared emission