An injection molding process using warp free pigment compositions including diaryldiketopyrrolopyrroles to improve {HEAD ~ the dimensional stability} of the injection molded product by decreasing {TAIL ~ warping} wherein the constituents of the formulation being injection molded are added into an injection molding machine in ready premixed form or simultaneously as individual components 
An injection molding process using warp free pigment compositions including diaryldiketopyrrolopyrroles to improve { HEAD ~ the dimensional stability } of the injection molded product by decreasing { TAIL ~ warping } wherein the constituents of the formulation being injection molded are added into an injection molding machine in ready premixed form or simultaneously as individual components
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