PERIBLANC BN liq.

PERIBLANC BN liq. is a fluorescent whitening agent with low affinity having a slightly reddish shade. The product is very well suitable to be used in the pad process, in cold pad batch bleaching as well as in resin finishing liquors. PERIBLANC BN liq. especially shows an excellent resistance to acid and electrolyte. Therefore, the optical brightener is particularly suitable for the usage in resin finishing liquors with strong acid catalysts. Since PERIBLANC BN liq. shows only a low affinity tailing does not occur. When using optical brighteners in general it must be noted that already minor traces of heavy metals lead to an impairment of the degree of whiteness. This can be avoided by adding an complexing agent such as PERIQUEST BSD.