DIKETO-PYRROLO-PYRROLE DYE HAVING GOOD THERMAL RESISTANCE FOR COLOR FILTERS AND PROCESS OF PROCESSING THEREOF

摘要

The present invention relates to a high heat-resistant DPP dye for color filters and a manufacturing method thereof, and a DPP dye that can be used as a RED color having solubility in manufacturing a color filter substrate. In the present invention, dichlorodiketopyrrolopyrrole such as CI Pigment Red 254 as a starting material by the S _N 2 type alkylation reaction using an alkyl halide structurally break the DPP molecules to have a solvent solubility and at the same time mono It is possible to obtain a high heat-resistant DPP dye for color filters having only higher thermal stability than the dialkylated compound by separating only the alkylated compound.