REINACH, SWITZERLAND: Archroma has unveiled 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 the 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, cost-effective 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.
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