Optical Brightener KCB for Plastics | C.I. Fluorescent Brightener 367 | CAS No. 5089-22-5
Key Features
Effective Optical Brightening
KCB provides blue fluorescence that helps compensate for yellowish tones and enhances the perceived whiteness and brightness of compatible polymer materials.
Broad Plastic Compatibility
Optical Brightener KCB is used in a variety of plastics, including EVA, PE, PP, PVC, PS and ABS.
Particularly Suitable for EVA
KCB is widely used in EVA applications and is particularly relevant to products such as EVA foamed materials and shoe-related polymer products.
Suitable for Synthetic Fibers
In addition to plastics, KCB can also be used for fluorescent whitening of compatible synthetic fibers, including polyester applications.
Suitable for Coatings
KCB also has applications in compatible paint and coating systems where improved optical brightness and appearance are required.
Product Information
| Item | Information |
|---|---|
| Product Name | Optical Brightener KCB |
| C.I. Name | C.I. Fluorescent Brightener 367 |
| CAS No. | 5089-22-5 |
| Chemical Name | 1,4-Bis(2-benzoxazolyl)naphthalene |
| Molecular Formula | C24H14N2O2 |
| Molecular Weight | 362.39 |
| Main Applications | Plastics, synthetic fibers and compatible coatings |
Typical Applications
EVA
Optical Brightener KCB is particularly suitable for compatible EVA applications, including EVA foamed materials and related polymer products, helping improve perceived whiteness and brightness.
Polyethylene (PE)
KCB can be used in compatible PE materials to compensate for unwanted yellowish tones and improve visual brightness.
Polypropylene (PP)
Optical Brightener KCB is suitable for compatible PP applications requiring fluorescent whitening and enhanced visual appearance.
PVC
KCB can be used in compatible PVC materials and products where improved perceived whiteness and brightness are required.
Polystyrene (PS) & ABS
KCB is also used in compatible PS and ABS applications for fluorescent whitening and visual appearance enhancement.
Synthetic Fibers
Optical Brightener KCB can be used in compatible synthetic fiber applications, including polyester materials, to improve perceived whiteness and brightness.
Packaging & Customized Options
Regular Packaging
Packaging options are available according to product grade and customer requirements.
Customized Product Options
Customized KCB options are available based on specific polymer systems, processing conditions and performance objectives.








