Optical Brightener OB-1
1. Introduction:
OB is a fluorescent whitening agent of the thiophenediyl benzoxazole class. The product is useful in plastics, man-made fibers, printing inks and coatings, flexible PVC and polyethylene. Dosage: 0.01%~0.05%.
Product name: Optical Brightener OB-1
Synonyms: 2,5'-bis[2-(5-tert-buty l-2 benzoxazoly)thiophene; Fluorescent Brightener 184; 2,2’-(2,5-thiophenediyl)bis(5-(1,1-dimethylethyl)-benzoxazol
Appearance: Slight greenish yellow powder
CAS No.:7128-64-5
EINECS No.:216-245-3
Structural No.: C.I.184
Molecular formula: C26H26SO2N2
Molecular weight: 430
Melting Point:200-202oC
2. Technical Specification:
|
Items |
Standard |
|
Assay |
98% min |
|
Appearance |
Light yellow powder |
|
Melting point |
201-202℃ |
|
Volatile |
≤0.2% |
|
Light transmittance |
450nm≥96% 500nm≥97% |
3. Application:
1. Suitable for whitening and brightening polypropylene plastic, hard PVC, ABS . EVA, polystyrene, polycarbonate, etc.
2.Suitable for whitening chemical fibers, such as the polyester fibre, nylon fiber, polypropylene fiber and so on.
3.Suitable to be added into the conventional polymerization of polyester and nylon.
4. Especially suitable for whitening the plastics of elevated temperature compaction.
4. Features:
1 .high brightening intensity and strong fluorescence.
2.wide usage in brightening polyester, nylon fiber and all kinds of plastics.
3.Carries good resistance to high temperature.
5.Packing & Storage:
Packed in 25kgs carton drums
should be stored in coo,dry and ventilate place,stored term shouldn’t exceed 2years
