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

• US 4,289,677 A
• Filed: 09/10/1979
• Issued: 09/15/1981
• Est. Priority Date: 08/23/1971
• Status: Expired due to Term

• Current Assignee: Melvin Greenberg, Robert F. Supcoe
• Original Assignee: Melvin Greenberg, Robert F. Supcoe
• Inventors: Greenberg, Melvin, Supcoe, Robert F.
• Primary Examiner(s): Gron, Teddy S.
• Application Number:
  US06/073,815
• Time in Patent Office: 736 Days
• Field of Search: 106/253, 106/262, 106/263, 106/264, 106/290, 106/300, 106/308 M, 343/18 R, 343/18 A, 343/18 B, 260/225, 260/185, 260/33.6 SB, 260/37 SB, 250/353, 428/391, 428/390, 428/405, 428/407
• US Class Current: 524/413
• CPC Class Codes: C09D 5/30 Camouflage paints
• CPC Class Codes: Y10S 428/919 Camouflaged article
• CPC Class Codes: Y10T 428/2995 Silane, siloxane or silicone coating
• CPC Class Codes: Y10T 428/2998 including synthetic resin or polymer

Abstract

A low infrared emitting coating for use on metal surfaces and compatible with both organic and inorganic binders. The coating is of a color corresponding to the standard Navy haze-gray color and exhibits an infrared reflectance in excess of the standard Navy haze paint.

Claims

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.