Product: Optical Brightener OB-1 CAS No. 1533-45-5 C.I. No. 393 Molecular formular:C28H18N2O2 MW:414
Optical brightener OB
Product: Optical Brightener OB
Description:
The optical brighteners significantly improve the whiteness in both textile fibers and plastics. In polyester and nylon fibers, the optical brighteners impart a pleasing whiter-than-white appearance and give more intensity to some colors as well. Because of its excellent brightening ability, good thermal stability, and compatibility with many polymers, OB-1 is an effective brightener for many plastics. OB-1 provides an excellent white, permanent color since the brightener is dissolved in the polymer or fiber during polymer manufacture. This permanence gives much better brightness retention over time versus other methods such as bleaching or surface treatment with optical brighteners. Optical whiteners function by absorbing ultraviolet radiation and re-emitting blue light. The emitted blue light will reduce the yellow color of a polymer and provide the whiter-than-white appearance. OB-1 is available in two different particle sizes, 5 and 75 microns and has approved for a variety of food-contact applications.
Specification:
Form Color Specific Gravity @ 20C/20C Melting Point Assay | Crystalline solid Greenish powder 1.39 359-361C 99 wt % min |
Application/Uses:
• Coatings
• Man-made fibers
• Plastics
• Polyester
• Polymers
• Recycled polymers
Key Attributes:
• Colors appear more brilliant
• Environmentally friendly
• Excellent brightening ability
• Produce a bluish tinge, masking yellowness
• Whiter-than-white appearance
Packing : 25kgs fibre drum
Storage: Keep in cool and dry place, far away from high temperature and sunshine.
Cas No1533-45-5 ob normal best price OB normal
