optical brightener OB
Optical Brightener OB, 2,5-Di (5-tert-butylbenzoxol-2-yl) thiophene, fluorescent brightener 184, it is very widely used for polyester staple fibers whitening, Plastic whitnening (such as PVC whitening, PP whitening, PE whitening etc), rubber, coating whitening, paint and ink whitening, masterbatch whitening and can be used in combination with titanium dioxide TiO2 to produce a particular brightness and whiteness.
Specification Of Optical Brightener OB
Optical Brighteners OB are used to offset the yellowness of a polymer and yield a whiter appearance. OB is used as a thermoplastic (PVC, PS, PE, PP, ABS) optical brightener. Also for coatings, printing inks, paints, dyes, manufactured fibers, synthetic leather, waxes, fats, and oils. Ob is a general-purpose optical brightener agent.
Optical brightener OB(fluorescent whitening agent OB) is a kind of optical brightener called the public lover, OB shows that it has a very good fusion and is suitable for all kinds of plastics. At the same time, the optical brightener OB can also be used in paint, ink, coating, and PE film.
Optical Brightener OB Dosage:
In plastics, the amount of fluorescent whitening agent is usually expressed as a percentage relative to the mass of the plastic.
The usual amount of transparent plastic is 0.0001%-0.001%, and the amount of white plastic is usually 0.05%-0.1%.
In paint and ink, the amount of fluorescent whitening agent is usually 0.02%-0.05%. When it comes to the specific dosage,
it is recommended to get some small samples from the fluorescent whitening agent manufacturer, because less fluorescent whitening agent will easily cause whitening The effect is unsatisfactory. Using too much will cause the brightener to separate out, so before determining the dosage, take a sample test to achieve our desired effect.