Optical brighteners are compounds that fluoresce under UV light, reemitting in the blue region of the spectrum. OB masterbatches are used to produce materials that require “extra-whiteness.” The emission of blue light causes a white product that may typically have a slight yellow cast to appear whiter. Optical brighteners are also often used in colorless or white anti-tampering seals, to permit rapid confirmation of the seal’s presence when viewed under UV light. OB masterbatches are typically used at very low LDRs.
To learn how an Optical Brightener Masterbatch could improve your product, contact your local Ampacet representative or complete our product inquiry form.