• Patent Title: PINK AND VIOLET PIGMENTS THAT DISPLAY HEAT STABILITY, RESISTANCE TO ACIDIC CONDITIONS, AND GOOD LIGHTFASTNESS
  • Application No.: US15584312
    Application Date: 2017-05-02
  • Publication No.: US20180258253A1
    Publication Date: 2018-09-13
  • Inventor: William M. Yuhasz
  • Applicant: The Shepherd Color Company
  • Main IPC: C08K3/00
  • IPC: C08K3/00 C09D5/03
PINK AND VIOLET PIGMENTS THAT DISPLAY HEAT STABILITY, RESISTANCE TO ACIDIC CONDITIONS, AND GOOD LIGHTFASTNESS
Abstract:
There are very few violet or pink colored commercial pigments that display high heat stability, resistance to acidic conditions, or good lightfastness. This technology results in pigments that fall into the above color space, but display improved chemical and weathering stability. The pigments based of this technology have the molar ratio (A2O)x(BO)y(C2O5)z(DO3)w(EO2)v, where 2x+y+2z+w+v≅100. Where A is Li or Li with one or more of Cu, Na, or K, where B is Co or Co with one or more of Ca, Cu, Fe, Mg, Mn, Ni, Sn, or Zn, where C is Nb, Sb, or combination thereof, where D is Mo, W or combination thereof, where E is Sn, Ti, Zr, or combination thereof. The above formulation may be modified with a dopant addition of Al, B, Ba, Bi, Ca, Ce, Cr, La, P, Pr, Si, Sr, Ta, V, or Y where the dopant concentration represents 5 atomic % or less of the total number of moles of components A+B+C+D+E.
Information query
Patent Agency Ranking
0/0