Heat-induced formation of co-crystalline composition containing titanyl phthalocyanine and titanyl fluorophthalocyanine
AssigneeEastman Kodak Company
InventorMichel F. Molaire
Life of this patent
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Abstract
A process for forming a cocrystalline mixture of titanyl phthalocyanine (TiOPc) and titanyl fluorophthalocyanine (TiOFPc) includes: dry milling a mixture of crude TiOPc and crude TiOFPc, thereby forming an amorphous pigment mixture of TiOPc and TiOFPc; and heating the amorphous pigment mixture at a temperature effective to form a cocrystalline composition comprising titanyl phthalocyanine (TiOPc) and titanyl fluorophthalocyanine (TiOFPc), the cocrystalline composition being characterized by an X-ray diffraction spectrum exhibiting intensity peaks at 7.2°, 12.9°, 16.3°, 22.3°, 24.6°, 26.2°, and 28.8° with respect to X-rays of Cu Kαat a wavelength of 1.54 1 Å of the Bragg angle 2θ.
Claims7
A process for forming a cocrystalline mixture of titanyl phthalocyanine (TiOPc) and titanyl fluorophthalocyanine (TiOFPc) comprising:
- dry milling a mixture of crude TiOPc and crude TiOFPc, thereby forming a dry amorphous pigment mixture of TiOPc and TiOFPc;
- and
- heating the dry amorphous pigment mixture at a temperature effective to form a cocrystalline composition comprising titanyl phthalocyanine (TiOPc) and titanyl fluorophthalocyanine (TiOFPc), said cocrystalline composition being characterized by an X-ray diffraction spectrum exhibiting intensity peaks at 7.2°, 12.9°, 16.3°, 22.3°, 24.6°, 26.2°, and 28.8° with respect to X-rays of Cu Kα at a wavelength of 1.54 1 Å of the Bragg angle 2θ.
Dependencies are inferred from the claim text.