Optical Brightener OB-1 for Plastics | C.I. Fluorescent Brightener 393 | CAS No. 1533-45-5
Key Features
High Thermal Stability
OB-1 is suitable for plastic and polymer processing applications involving elevated temperatures, making it useful for a range of thermoplastic processing systems.
Effective Optical Brightening
OB-1 helps improve visual whiteness and brightness by compensating for unwanted yellowish tones through blue fluorescence.
Low-Dosage Application
OB-1 is generally used at relatively low addition levels to achieve optical brightening effects in compatible polymer systems.
Good Compatibility with Polymer Systems
OB-1 can be incorporated into various compatible polymer systems where improved whiteness and brightness are required.
Blue Fluorescent Shade
OB-1 provides a blue fluorescent effect that helps reduce the visual appearance of yellowish tones and improve the brightness of finished plastic products.
Product Information
| Item | Specification |
|---|---|
| Product Name | Optical Brightener OB-1 |
| C.I. Name | C.I. Fluorescent Brightener 393 |
| CAS No. | 1533-45-5 |
| Chemical Type | Benzoxazole-based fluorescent whitening agent |
| Appearance | Greenish crystal powder |
| Melting Point (°C) | 357–361 |
| Purity (HPLC) | ≥ 98.5% |
| Color Shade | Blue |
| Fineness | ≥ 200 mesh |
| Ash (%) | ≤ 0.3 |
| Volatile Matter (%) | ≤ 0.5 |
| Water (%) | ≤ 0.5 |
Typical Applications
Polyester
OB-1 can be used in polyester-based materials to enhance visual whiteness and brightness and help compensate for unwanted yellowish tones.
Engineering Plastics
OB-1 is suitable for compatible engineering thermoplastics where optical brightening performance under elevated processing temperatures is required.
Polyolefins
OB-1 can be used in compatible polyolefin applications to enhance brightness and improve the visual appearance of finished products.
Other Plastic & Polymer Applications
OB-1 may also be used in other compatible plastic and polymer systems where improved whiteness, brightness or correction of yellowish tones is required.
Packaging & Customized Options
Regular Packaging
25 kg/drum. Other packaging options are available according to customer requirements.
Customized Product Options
Customized OB-1 options are available based on specific application requirements, polymer systems, processing conditions and performance objectives.
