The additives for Thermoplastics

OPTICAL BRIGHTENERS are often used to boost brightness and gloss of PET and rPET packaging and enhance its whiteness when coloured.
Especially when used in combination with recycled PET, REPI's OB prevent L* drop.
OB are part of the REFIT range, composed of Additives and Colours dedicated to recycled polymers.


Increase gloss (bright shades)
Enhance the whiteness
Low viscosity liquid
Let down ratio: 0,2 – 0,3%
Meet EU and FDA food contact regulations
Suitable for standard liquid dosing units
Can be blended with liquid colours and additives
Shelf life: 6 months in sealed containers.
Standard package: 25, 50 and 200 kg drums, 1 ton IBC container. Customized solutions available on request