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Solar reflective coatings systems

  • US 8,679,617 B2
  • Filed: 11/02/2010
  • Issued: 03/25/2014
  • Est. Priority Date: 11/02/2010
  • Status: Active Grant
First Claim
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1. A coating system comprising:

  • (a) a first coating layer having a CIELAB L* value of no more than 40 and comprising;

    (i) a film-forming resin; and

    (ii) a visibly absorbing infrared transparent pigment; and

    (b) a second coating layer deposited beneath at least a portion of the first coating layer and comprising;

    (i) a film-forming resin;

    (ii) a thin flake metal or metal alloy infrared reflective pigment; and

    (iii) a visibly absorbing infrared transparent pigment,wherein the first coating layer and the second coating layer have a contrast ratio (L*second/L*first) of 0.8;

    1 to 1.6;

    1;

    wherein the coating system has a % total solar reflectance of at least 25%; and

    wherein the second coating layer has a % TSR of at least 25%.

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