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US 11,447,659 B2Granted
Low solar absorptance coatings
AssigneeThe Johns Hopkins University
InventorsJason J. Benkoski, Rengaswamy Srinivasan, Christopher M. Hoffman, Jr., Keith S. Caruso
Life of this patent
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Abstract
Coating compositions include a binder that has a first polymeric material that does not undergo ultraviolet (UV) degradation and/or does not absorb UV radiation/light. The coating compositions may further include at least a first UV-reflective pigment dispersed throughout the binder. The coating compositions may be provided in a cured form as a solid coating layer that may overly at least a portion of a substrate.
Claims19
A solid coating, comprising:
- (A) a cured coating composition comprising:
- (i) a binder comprising a first polymeric material comprising a first polysiloxane that (a) does not undergo ultraviolet (UV) degradation, (b) does not absorb UV radiation/light, or (c) both of (a) and (b), and a second polymeric material comprising a second polysiloxane that (a) does not undergo ultraviolet (UV) degradation, (b) does not absorb UV radiation/light, or (c) both of (a) and (b);
- and
- (ii) at least a first UV-reflective pigment dispersed throughout the binder;
- wherein the first polysiloxane is different than the second polysiloxane;
- and
- (B) an overcoat disposed on top of the cured coating composition, the overcoat comprising calcium carbonate dispersed in a polysiloxane.
4 more elements
Dependencies are inferred from the claim text.