Optical Brightening Agent BBU

Chemical name Stilbene bistriazine derivative Structural formula Specification Appearance: Slight yellow powder Fluorescent Color: Similar to the standard sample Whitening strength: 100±3( compared with standard sample) Moisture: ≤6% Ionic character anionic Treating process: 1.Addition via size press: combined with starch, CMC, PVA and other products designed for surface sizing. Usual dosage: 0.5~5g/l 2.Addition to the pigment coating mixtures: adding in any stage of building coating material. Good performance with the carrier of CMC, PVA and starch. Usual dosage: 0.1~0.3% on dry white pigment. 3.Addition to the stock: adding without dilution. Usual dosage: 0.05~0.5% on dry pulp. For actual application, the process should be adjusted according to correspondent sample-test. Property: 1.Convenient in application,diluted with water perfectly, suitable for continuous addition. 2.Good acid stability 3.Great performance in size press and pigment coating mixtures Use: Mainly be used in size press, pigment coating mixtures. Package: 20kg or for the special demand.