PERIBLANC PFN

PERIBLANC PFN is a fluorescent whitening agent for polyester with a blue-violet shade. The product is very well suitable for application in exhaust process and for pad-thermosol process. PERIBLANC PFN provides the following fastness properties: fastness test norm change of whiteness light fastness (ISO 105-B02) 5 – 6 wash fastness at 40 °C (ISO 105-C06 A1S) 5 perspiration fastness (ISO 105-E04) acid 5 alkaline 5 The fastness properties may vary depending on the type of fabric, the kind of application and the quantity used of PERIBLANC PFN. 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 a complexing agent such as PERIQUEST BSD.