Pigmenting high mol wt organic cpds

摘要

Pigment preparations contain a pigment and or an optical brightener intimately mixed with a cellulose butyrate content of is not 43 weight %, possibly an acetyl content of is not >4.5 weight %, and a content of free hydroxyl groups of is not 0.5 weight %. The pigment preparations are used to colour high-molecular organic compounds, particularly heat-curing acrylic resin lacquers; they can be used also in printing inks, in fibres which are spun from soln., such as polyacrylonitrile and polyurethane fibres, in alkyd lacquers, in siloxane lacquers, in epoxy lacquers, and in polyester and epoxy resins.