Optical brightener for paper industry

Optical brightener for paper industry are additives that paper industry put into paper in order to help a paper look "whiter." They are also called optical brightener agents (OBA), or sometimes "artificial whiteners." Many paper industry use optical brighteners in dry end at the size press or calender stack as surface coating.The optical brighteners that are used in paper industries can be sort into three types based on the sulfonic groups. All of them contain stilbene structure.

Optical Brightening Agent BBU
CAS No.: 16470-24-9
MF:C40H40N12O16S4Na4
Purity:99.9%
Place of Origin:Shandong, China
Type:Adsorbent
Adsorbent Variety:Activated Carbon
Usage:Paper Chemicals, Petroleum Additives, Textile Auxiliary Agents, Water Treatment Chemicals
Brand Name:Raytop
Model Number:Optical Brightener C.I.220
Product name:Optical Brightener Agent BBU
Appearance:light yellow uniform powder
Fluorescent strength:100+/-2
HPLC purity:≥99
Moisture content:≤1%
Content of water-insoluble impurities:≤0.5%
molecular weight:1165.12
Packing:25 kg/drum
lead time:according to the order
Packaging & Delivery
Packaging Details
Optical brightener OBA220 is packed in 25KG/drum.
Port:Qingdao, Shandong

Optical brightener agents are additives which paper industry used to enhance whitening effects of papers. These chemical compounds absorb light in the ultraviolet and violet region (usually 340-370nm) and re-emit light in the blue region (typically 420-470 nm). It gives a fluorescent effect that masks the inherent yellowness of the fiber and enhances the brightness of the paper product. 

It is common for most paper industry to add certa
Optical brightener agents not only used in paper industry but also used in plastics, textiles, laundry detergents. They are also known as optical brighteners, artificial whiteners. Optical brightener agents is one kind of coating agent.
in optical brightener to make the paper whiter. optical brightener can take invisible ultraviolet light and cause it to re-emit in the blue spectrum - or fluoresce - at a point that is just barely within our ability to see. While our eyes see this as a brighter, blue-ish white - a light measuring instrument will only see this as a different form of blue. That is why printer profiles made with paper using a lot of optical brighteners can end up printing out images that have a yellow tint to them.