Infrared fluorescent coatings

Zalich, Michael Andrew; Baxter, Michael F.; Berdahl, Paul H.; Hellring, Stuart D.; Stalker, Jeffrey Lynn

Title: Infrared fluorescent coatings

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Abstract

The present invention provides for a composition comprising a pigment, wherein the composition is suitable for coating a surface that is, or is expected to be, exposed to the sun. The pigment comprises particles that fluoresce in sunlight, thereby remaining cooler in the sun than coatings pigmented with non-fluorescent particles. The particles comprise solids that fluoresce or glow in the visible or near infrared (NIR) spectra, or that fluoresce when doped. Suitable dopants include, but are not limited to, ions of rare earths and transition metals. A coating composition includes: (i) a film-forming resin; (ii) an infrared reflective pigment; and (iii) an infrared fluorescent pigment different from the infrared reflective pigment. When the coating composition is cured to form a coating and exposed to radiation comprising fluorescence-exciting radiation, the coating has a greater effective solar reflectance (ESR) compared to the same coating exposed to the radiation comprising fluorescence-exciting radiation except without the infrared fluorescent pigment. A multi-layer coating including the coating composition, and a substrate at least partially coated with the coating composition is also disclosed. A method of reducing temperature of an article includes applying the coating composition to at least a portion of the article.

Inventors:: Zalich, Michael Andrew; Baxter, Michael F.; Berdahl, Paul H.; Hellring, Stuart D.; Stalker, Jeffrey Lynn

Issue Date:: 2021-02-23

Research Org.:: PPG Industries Ohio, Inc., Cleveland, OH (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1805530

Patent Number(s):: 10927267

Application Number:: 15/635,962

Assignee:: PPG industries Ohio, Inc. (Cleveland, OH)

DOE Contract Number:: AC02-05CH11231; EE0006347

Resource Type:: Patent

Resource Relation:: Patent File Date: 06/28/2017

Country of Publication:: United States

Language:: English

Citation Formats


                    Zalich, Michael Andrew, Baxter, Michael F., Berdahl, Paul H., Hellring, Stuart D., and Stalker, Jeffrey Lynn. Infrared fluorescent coatings.  United States: N. p., 2021. 
        Web.

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                    Zalich, Michael Andrew, Baxter, Michael F., Berdahl, Paul H., Hellring, Stuart D., & Stalker, Jeffrey Lynn. Infrared fluorescent coatings.  United States.

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                    Zalich, Michael Andrew, Baxter, Michael F., Berdahl, Paul H., Hellring, Stuart D., and Stalker, Jeffrey Lynn. Tue .  
        "Infrared fluorescent coatings".  United States.  https://www.osti.gov/servlets/purl/1805530.

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@article{osti_1805530,

  title        = {Infrared fluorescent coatings},

  author       = {Zalich, Michael Andrew and Baxter, Michael F. and Berdahl, Paul H. and Hellring, Stuart D. and Stalker, Jeffrey Lynn},

  abstractNote = {The present invention provides for a composition comprising a pigment, wherein the composition is suitable for coating a surface that is, or is expected to be, exposed to the sun. The pigment comprises particles that fluoresce in sunlight, thereby remaining cooler in the sun than coatings pigmented with non-fluorescent particles. The particles comprise solids that fluoresce or glow in the visible or near infrared (NIR) spectra, or that fluoresce when doped. Suitable dopants include, but are not limited to, ions of rare earths and transition metals. A coating composition includes: (i) a film-forming resin; (ii) an infrared reflective pigment; and (iii) an infrared fluorescent pigment different from the infrared reflective pigment. When the coating composition is cured to form a coating and exposed to radiation comprising fluorescence-exciting radiation, the coating has a greater effective solar reflectance (ESR) compared to the same coating exposed to the radiation comprising fluorescence-exciting radiation except without the infrared fluorescent pigment. A multi-layer coating including the coating composition, and a substrate at least partially coated with the coating composition is also disclosed. A method of reducing temperature of an article includes applying the coating composition to at least a portion of the article.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2021},

  month        = {2}

}

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