Optical brightener OB-1

Appearance: Yellow-green crystalline powder
Purity:≥98.0%
Max UV absorption wavelength:374nm
Performance characteristics:
soluble in ethyl alcohol,DMF,benzene,methylbenzene and so on;It has stable
chemical properties,good heat resistance,light resistance,chlorine bleaching resistance,
migration fastness,strong acid and alkali resistance.Low toxicity allows it can be
applied to whiten the package of food and children toy.
OB-1 has excellent whitening effect and stability,it can be compatible with other poly-  mer,widely applied to ABS,PS,HLPS,PA,PC,PP,EVA and rigid PVC and so on;  OB-1 is applied to correct polyester filaments.When added into polypropylene,poly- amide,nylon and polyester,it can improve whitening effect
Recommended dosage:
Transparent product:0.0025-0.005%;Opaque product:0.01-0.03%.
It can be made into 1%~10%concentrated color masterbatch and then added into
Package:N.W.20kg/25kg fiber drum or PE bag。