Star Product Recommendation: Optical Brightener OB-1 (FWA 393) – A High-Performance Whitening Solution for Multiple Applications
As one of the core star products of Jinan Tonex, Optical Brightener OB-1 (FWA 393) has earned widespread recognition in the fibers, engineering plastics, and high-end packaging materials sectors, thanks to its exceptional overall performance. Below, we provide a detailed overview of OB-1's outstanding advantages from two key dimensions: appearance effects and chemical properties.
I. Appearance Effects: Brilliant Neutral White for Precise Yellowing Compensation
Optical Brightener OB-1 imparts a pure, bright white appearance to finished products. Its notable "neutral white" characteristic means that the white light it produces is well-balanced, with no significant cool-blue or warm-yellow color cast, delivering a naturally pleasant visual effect.
In terms of anti-yellowing performance, OB-1 excels remarkably. Its mechanism of action is as follows: OB-1 effectively absorbs invisible ultraviolet light in the wavelength range of approximately 300–400 nm and emits blue to blue-violet fluorescence in the range of approximately 420–480 nm. This fluorescence optically complements the yellowish tones generated by material aging or processing, significantly enhancing whiteness visually and restoring-or even surpassing-the original bright white appearance of the finished product.
II. Chemical Properties: Low Volatility and Excellent Heat Resistance for Demanding Processing Conditions
1. Low Volatility – Stable and Durable, Long-Lasting Whitening
OB-1 features extremely low volatility, which ensures that the optical brightener remains stably present within the substrate throughout material processing and long-term storage, without any loss of whitening efficacy due to volatilization. This property is particularly critical in closed-system applications or long-term warehousing scenarios, ensuring that OB-1 consistently delivers stable whitening performance throughout the entire product lifecycle.
2. Excellent Heat Resistance – Ideal for High-Temperature Engineering Plastic Processing
OB-1's heat resistance stands out among similar products, making it particularly suitable for fiber materials and high-temperature engineering plastic processing applications:
OB-1 withstands high-temperature processes such as textile dyeing and drying without decomposition or performance degradation, ensuring uniform whiteness of fiber products.
For engineering plastics such as polycarbonate (PC), polyamide (PA), and polyester (PET), which require high-temperature molding processes like injection molding and extrusion (processing temperatures typically reaching 200–300℃), OB-1 maintains its whitening efficiency under extreme processing conditions, helping finished products achieve desired whiteness and appearance quality.
As a flagship product of our company, Optical Brightener OB-1 not only delivers outstanding performance but also strictly complies with multiple food safety regulatory requirements, including GB 9685, FDA, and BfR. It is widely applicable in food packaging, textile fibers, engineering plastics, and other related fields.
Jinan Tonex is committed to providing our customers with high-quality optical brightener products and professional technical services. Should you require OB-1 samples or application technology consultation, please do not hesitate to contact us. We will be delighted to offer customized whitening solutions tailored to your specific needs.