Invention Application
US20160319097A1 CHROMIUM-FREE NEAR-INFRARED REFLECTING DELAFOSSITE PIGMENTS 审中-公开
无铬红外反射偏光颜料

  • Patent Title: CHROMIUM-FREE NEAR-INFRARED REFLECTING DELAFOSSITE PIGMENTS
  • Patent Title (中): 无铬红外反射偏光颜料
  • Application No.: US15134834
    Application Date: 2016-04-21
  • Publication No.: US20160319097A1
    Publication Date: 2016-11-03
  • Inventor: Matthew C. Comstock
  • Applicant: The Shepherd Color Company
  • Main IPC: C08K3/00
  • IPC: C08K3/00
CHROMIUM-FREE NEAR-INFRARED REFLECTING DELAFOSSITE PIGMENTS
Abstract:
The current technology is directed to an iron-substituted copper aluminum delafossite pigment, as well as a gallate version of the same. In particular, the materials may be defined as iron-substituted copper aluminum delafossite, CuFexAl1-xO2 and the gallate, CuFexGa1-xO2 where X=0.01 to 1.00, for example, CuFe0.15Al0.85O2, and CuFe0.15Ga0.85O2. The pigments are dark-brown to black, absorb most light in the visible spectrum, but have low absorbance and high reflectance in the near-infrared regions, specifically light from about 700 nm-2500 nm.
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