Optical brightener OB-1 has the highest melting point among the optical brighteners, and is also the most widely applicable and the most sold brightener. Optical brighteners have two appearance colors, yellow and green.
Optical Brightener OB-1 produced from China only,but world wilde use it to all kinds of plastics,or make master batches,then the optical brightener masterbatches and compound are used in the plastics industry.
Product Name:Optical Brightener OB-1
Chemical Name:2.2’-(4.4’-diphenol vinyl) dibenzoxazol
Technical Index:Appearance:yellowish green powder
Recommend Dosage:200-500g per 1000kg material
Package:10KG/25kg per fiber drum with 450kg or 500 kg or 675kg/pallet
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.