Optical brightener OB-1 (C.I.: 393 CAS NO: 1533-45-5) is a kind of optical brightener with good performance. It appears in the form of light yellow powder and is widely used for whitening treatment of polyester fibers, blended fabrics, plastic products and polyester slurries. OB-1 is known for its good whitening effect and strong resistance to harsh environments such as high temperature, light, and chlorine bleaching.

Application of optical brightener OB-1

1. Textile industry:
- Polyester fiber: Fluorescent whitening agent OB-1 is widely used to improve the whiteness and brightness of polyester fiber to ensure its bright and clean appearance.
- Blended fabrics: It is also suitable for various blended fabrics, providing a uniform whitening effect for different types of fibers.

2. Plastic industry :
- PVC (polyvinyl chloride): Optical brightener OB-1 is suitable for both rigid and soft PVC products to make them look brighter and more beautiful, thereby enhancing their visual appeal.
- PS (polystyrene): In polystyrene products, it can significantly improve the whiteness and transparency of the product, giving the final product a reliable appearance.
- Polyester coatings: Optical brightener OB-1 can be added to polyester coatings to ensure a bright, white, reliable product right from the production stage.

Advantages of optical brightener OB-1

1. Good whitening effect:
- Efficient: Fluorescent whitening agent OB-1 has a strong whitening effect, making materials look significantly whiter and brighter.
- Consistency: It provides an even whitening effect, ensuring consistent quality across all treated materials.

2. Durability:
- Heat Resistance: This product retains its whitening properties even at high temperatures, making it ideal for heat treatment applications.
- Lightfastness: It has strong lightfastness, ensuring that the whitening effect lasts longer without fading.
- Chlorine resistance: Optical brightener OB-1 is resistant to chlorine bleaching, making it suitable for use in environments with frequent chlorine exposure.

3. Versatility:
- Single or combined use: Fluorescent whitening agent OB-1 can be used alone or mixed with other whitening agents, which can flexibly achieve the ideal whitening effect while controlling costs.
- Variety of substrates: It is effective on a variety of substrates including textiles and plastics, making it a versatile choice for different industries.

Characteristics of optical brightener OB-1

1. Appearance: light yellow powder
- Light yellow powder: Optical brightener OB-1 is a light yellow powder that is easy to handle and add to various formulations.

2. Stability
- Thermal stability: It maintains efficacy under high temperature conditions, ensuring stable performance during processing.
- Chemical stability: Remains stable and effective even when exposed to various chemicals during processing and use.

3. High efficiency:
- Low dosage requirements: Fluorescent whitening agent OB-1 only needs a small amount to achieve the ideal whitening effect, making it a cost-effective solution for manufacturers.
- High whitening efficiency: Even at a very low concentration, it can significantly improve the whiteness and brightness of the materials being processed.

Usage:
Fluorescent whitening agent OB-1 can be used alone or in combination with other whitening agents to achieve the desired whitening effect. The following are recommended usage amounts for different materials:
1. Rigid PVC (polyvinyl chloride):
- Whitening: 0.01-0.06% (10-60 grams per 100 kg of material)
- Anti-reflection: 0.0001-0.001% (0.1-1g per 100kg of material)

2. Polystyrene (PS):
- Whitening: 0.01-0.05% (10-50 grams per 100 kg of material)
- Anti-reflection: 0.0001-0.001% (0.1-1g per 100kg of material)

3. PVC (polyvinyl chloride):
- Whitening: use 10-50 grams per 100 kg of material
- Anti-reflection: 0.1-1g per 100kg of material