optical brightener for paper

Optical brightener brightening colors or mask yellowing by optically yield a brighter, fresher appearance. It’s synonym name OBA which is also known as fluorescent whitening agent(FWA) or fluorescent brightening agent(FBA).

Typical optical brightener for paper are VBL, BBU, HS, HST.

• VBL is also known as fluorescent brightener 85. It’s used in whitening and brightening cellulose fabric, paper, light colored cellulose, dial dye printing.
• BBU is also known as fluorescent brightener 220, used in whitening paper pulp, coating and surface gluing. Both could be powder or liquid form.
• HS which known as fluorescent brightener 264, has great performance in size press and pigment coating mixtures.
• HST which known as fluorescent brightener 357, also has great performance in size press and pigment coating mixtures and good acid stability.