Archroma Leucophor MT: A cost-effective OBA for high whiteness
Reinach, Switzerland-based Archroma, a manufacturer of color and specialty chemicals, has introduced Leucophor® MT liq, a new tetrasulfonated optical brightening agent (OBA) modified to give high whiteness performance in surface applications.
The application of optical brighteners to the surface of paper is usually done by using either hexasulfonated OBAs, when high whiteness levels are required, or tetrasulfonated OBAs, when standard levels of whiteness are sufficient.
With the increasing costs of some of the key raw materials needed to manufacture hexasulfonated OBAs, Archroma asked its R&D experts to develop a tetrasulfonated agent for surface applications that would give comparable levels of whiteness to hexasulfonated grades.
The outcome is Leucophor MT liq, a REACH-registered, urea-free, modified tetrasulfonated OBA that offers papermakers a new option to achieve high whiteness levels in a surface application, especially at the size press.
Leucophor® MT liq is produced in Archroma’s OBA production facility near Barcelona, Spain, which was extended in 2017 to raise capacity to meet the demands of its European customers.