OBA 220 BBU

optical brightener(OBA) BBU OBA220 Scope of Application Good fluorescent brightening performance during coating. Good fluorescent brightening performance during surface sizing. Good fluorescent brightening performance in the paper pulp. Application Methods During the coating, it can be added in any position, and the effect will be better if it is used together with PVA, CMC and starch. Normal usage: 0.1 1.4% (to the weight of coatings) During surface sizing, the brightening effect will be better if it is used together with the starch, CMC and PVA. Normal usage: 1-20g/L. It can be directly added in the pulp. Normal usage: 0.1 1.2% (to absolute dry pulp)