Optical Brighteners(Fluorescent Whitening Agents) Description
Among our products, the OB, OB-1,FP and KCB are very suitable for plastic masterbatches.Fivedragon OB(FBA184), it is straight replacement for Uvitex OB with the strength relation at ratio of 1:1, Fivedragon OB can be used for whitening thermoplastic plastics , PVC, PS, PE, ABS, Acetate fiber, paint, coating, printing ink, etc.. It can be added at any stage in process for whitening the polymers and can give the finished products a bright bluish white glaze.
Fivedragon OB-1(FBA393), it is straight replacement for Eastobrite OB-1 with the strength relation at ratio of 1:1, OB-1 is especially suitable for shaping various kinds of plastics and their products under high temperature. It has an extra ideal whitening effect on polyester-cotton blend fabric. It can be used for whitening polyester melt .
Fivedragon FP(FBA378), it is straight replacement for Uvitex FP with the strength relation at ratio of 1:1, FP has very good whitening effect on various kinds of plastics and their products, especially on the products of plastics such as PVC and PP. It has extra ideal whitening and brightening effects on artificial leathers. No yellowing and discoloring will occur on the products whitening by this whitening agent even if they are stored for a long time.
Fivedragon KCB(FBA367), it is straight replacement for Hostalux KCB with the strength relation at ratio of 1:1. This whitening agent can be used for whitening and brightening plastic films, injection-molded materials, EVA foamed plastics and rubber products, and whitening coatings and lacquer,it is especially suitable for whitening EVA formed rubbers.

