OB1 Optical Brightener

About OB1 Optical Brightener

Optical Brightener OB-1 is a high molecular weight fluorescent whitening agent which significantly improves the whiteness in both textile fibers and plastics.

PROPERTIES :

• CI No. 393
• CAS No. 1533-45-5
• Chemical Name: 4,4' - bis (benzoxazol - 2 - yl) stibene
• Optical Brightener OB - 1 produces very brilliant white with light reddish Blue effect which compensate for yellowing. It has good light fastness. Because of it's exceptional whitening properties, excellent resistance to heat, low volatility and easy dispersibility it is now widely used in plastic market. It has good compatibility in various substrates, in combination with dyes it produces bright shades.
• Brightener OB - 1 is used in polymer fibers especially polyester and polyamide fibers. It is also widely used in PP, ABS, PS, HIPS, PA, PC, EVA, Rigid PVC etc.

VOLATILITY :

SPECIFICATION:

APPLICATION : (in each 100 Kgs Polymer)

• Transparent: 0.0025% - 0.0050% (2.50 gm - 5.00 gm)
• White : 0.01% - 0.05% (10 gm - 50 gm)
• The concentration to be used depends on substrate and the required whitening performance.
• BRIGHTENER OB-Spc.:

Technical Specification:

Note : The information given is only indicative and it is essential that the user should test the suitability of the whitener for his particular process.