TOPWHITE-OB (Optical Brightener Agent, C.I. O.B.A. 184)

TOPWHITE-OB (Optical Brightener Agent, C.I. O.B.A. 184)

Physical Properties:
Assay (by HPLC): 99.68%
Structure: A compound of benzoxazole type
Melting Point: 201-202 deg. C
Appearance: Pale light yellow-green powder
Water Content: 0.40%
Solubility: Soluble in paraffin, mineral oil, and organic solvents.
Ignition Loss: Volatility ( pure substance, heating rate 20 deg. C / min. in the air)
Weight Loss: Temperature:
1% +/- 0.5 280 deg. C
2% +/- 0.5 310 deg. C
5% +/- 0.5 325 deg. C
No Data Available 345 deg. C

Applications:
It can be used for whitening thermoplastics i.e. PVC, PS, PE, ABS, Acetate fiber, Paints, Coatings, Printing inks….etc. It can be added at any stage in process for whitening the polymers and give the finished products a bright bluish white glaze.

Directions for use and dosage:
The dosage is recommended at 0.01-0.05% on weight of plastic. Put OB into plastic pellets, mix the mixture thoroughtly and then carry out shaping.

Above information is for reference only. Laboratory trial is required before using.

If you have interest, please feel free to contact us at tdpctw@gmail.com or visit our website at www.tdpctw.com.