Patent ID: 7026084
Filing Date: 2006-04-11
Classification: C09B,G03G

Abstract:
1. A process for forming an amorphous TiOPc/TiOFPc pigment mixture containing a low concentration of TiOFPc, said process comprising: subjecting a mixture comprising phthalonitrile and titanium tetrachloride to reaction conditions effective to form lightly chlorine-substituted crude crystalline Cl—TiOPc; combining said lightly chlorine-substituted crude crystalline Cl—TiOPc with crude crystalline TiOFPc in a weight ratio from about 70:30 Cl—TiOPc:TiOFPc to about 99.5:0.5 Cl—TiOPc:TiOFPC to form a crude crystalline pigment mixture; and treating said crude crystalline pigment mixture under conditions effective to form a substantially amorphous pigment mixture of Cl—TiOPc and TiOFPc.