Optical Brightener Agent Ob for Plastic

• Color: Light Yellow
• Appearance: Powder
• Transport Package: 25kg/Drum
• Specification: 25kg
• Trademark: EMPEROR
• Origin: China
• Model NO.: Optical Brightener Agent
• HS Code: 320420
• Production Capacity: 80000mt/Year

Product Description

Product Name: Fluorescent Whitening Agent OB
C.I. No.: FBA184
Physical Form: light yellow or milk white powder 

PHYSICAL PROPERTY
Purity(%):>99.0
Melting Point(ºC): 200-202
Volatile content:(%):0.5Max
Ash content(%):0.1Max

Properties:
Structure:a compound of benzoxazole type 
Melting point:200-202°C 
Solubility:hardly soluble in water,but soluble in paraffins,mineral oils and ordinary organic solvents.

Applications:
OB can be used for whitening thermoplastic plastics,PVC,PS,PE,PP,ABS,Acetate fier,paint,coating.printing ink,etc..It can be added at any stge in prodess for process for shitening the polymers and can give the finished products a bright bluish white glaze.

Directions for use and dosage:
The dosage should be 0.01-0.05% on weight of plastic.Put whitening Agent OB into plastic pellets,mix the mixture thoroughly and then carry out shaping.Fluorescent whitening Agent OB is similar to Uvitex OB made in foreign country.


Optical brighteners, optical brightening agents (OBAs), fluorescent brightening agents (FBAs), or fluorescent whitening agents (FWAs), are chemical compounds that absorb light in the ultraviolet and violet region (usually 340-370 nm) of the electromagnetic spectrum, and re-emit light in the blue region (typically 420-470 nm) through the phenomenon of fluorescence. These additives are often used to enhance the appearance of color of fabric and paper, causing a "whitening" effect; they make intrinsically yellow/orange materials look less so, by compensating the deficit in blue and purple light reflected by the material, with the blue and purple optical emission of the fluorophore