... PVC, PS, ABS, PE, PP plastic, owing to its superior fluorescent whitening effect, good thermal stabilit OB can be widely used ... PVC, PS, ABS, PE, PP plastic, owing to its superior fluorescent whitening effect, good thermal stability, add a small amount of ... for polyester fibers, paints, paint, ink and acrylic acid brightening. Fluorescent Whitening Agent OB can be shared with the dye have a special ...