| 摘要 |
<p>PURPOSE:To provide the title coloring material which has excellent handling properties, dilutability and wide applicability and can be obtd. by a simplified process, containing an org. pigment and a resin. CONSTITUTION:An aq. suspension contg. not more than 30wt% org. pigment such as a phthalocyanine pigment, an azo pigment, etc., is mixed with a predetermined quantity of oil varnish having a viscosity of 100-1,000ps (25 deg.C), composed of, e.g., a rosin-modified phenolic resin/linseed oil/high-boiling petroleum solvent in a weight ratio of 40/10/50. The mixture is subjected to flashing (phase reversal of O/W type into W/O type) and the separated free water is removed by decantation. The remaining water is then removed at 60 deg.C under reduced pressure over a period of 30 min to obtain the title coloring material having an org. matter content of 30-70wt% (dry weight) and an average particle size of 2mm or below.</p> |
