High-Performance Diphenylstyrene Biphenyl Brightener | FP-127 Product Overview

📝Product Overview

Optical Brightener FP-127 (also known as Fluorescent Brightener FP-127 or Uvitex FP) is a highly effective fluorescent whitening agent for plastics, with CAS number 40470-68-6 and chemical formula C30H26O2.

It is a pale yellow crystalline powder exhibiting excellent thermal stability, lightfastness, and resistance to yellowing. It absorbs ultraviolet light and emits blue fluorescence, imparting a bright white appearance to plastic products. This product has a molecular weight of approximately 418.5 g/mol, a maximum absorption wavelength of 368 nm, and a fluorescence emission wavelength of 436 nm.

It is particularly suitable for whitening various thermoplastic plastics, demonstrating outstanding performance in PVC and polystyrene (PS). It offers high whiteness enhancement at low dosage levels and exhibits minimal fading or yellowing during long-term storage.

🔬Key Specifications

Appearance ：Pale yellow green powder

Purity ：≥98%

Melting point ： 219-221°C

Volatile conten ： ≤0.50%

Ash content ：≤0.10%

Fineness.mesh ：≥300

🚀Application Areas

Optical Brightener FP-127 is a highly effective fluorescent whitening agent widely used to enhance the visual whiteness and brightness of plastic products, featuring excellent compatibility and stability. Primary application areas include:

1️⃣Plastic Products: 

Particularly suitable for polyvinyl chloride (PVC, including rigid pipes, flexible films, foam boards, profiles, and artificial leather), polystyrene (PS), ABS resin, and polypropylene (PP). It effectively masks the inherent yellowing of ABS, enhances product whiteness and gloss, and is applicable to injection molding, extrusion, and blow molding processes.

Recommended dosage: 0.02-0.05% (white products) or 0.0002-0.002% (transparent products).

2️⃣Paints & Inks: 

Used in water-based and solvent-based paints, inks, and PVC plastisols to provide lasting whitening effects and enhance product brightness. Suitable for wallpaper, signage, and decorative materials.

3️⃣Synthetic Fibers: 

Used for whitening polyester fibers and other synthetic fibers, enhancing the visual appeal of textiles.

4️⃣Thermoplastic Elastomers (TPE/TPR): 

Used to whiten and brighten TPE and TPR products such as footwear materials, soft toys, and seals, imparting a more vivid white color and gloss. Particularly suitable for consumer goods requiring flexibility and aesthetics.

5️⃣Engineering Plastics:

 In transparent engineering plastics like polycarbonate (PC) and polymethyl methacrylate (PMMA), FP-127 enhances optical clarity and whiteness for applications including optical device housings, display panels, and decorative components. Dosage is typically controlled at 0.0005-0.01% to prevent excessive migration.

6️⃣Plastic Films and Packaging Materials: 

For food-grade or non-food-grade PVC and PP films, it enhances the visual appeal of packaging materials, making them more competitive on store shelves. It is particularly suitable for transparent or white packaging bags and film products.

7️⃣Printing and Coating Applications:

 In UV-curable inks and spray coatings, FP-127 enhances whiteness and brightness of printed or coated surfaces. Commonly used in billboards, signage, and decorative surface coatings.

8️⃣Foam Materials: 

In PVC or PS foam products (e.g., foam boards, decorative strips), FP-127 improves surface whiteness and masks substrate yellowing, making it suitable for lightweight materials in construction and furniture industries.

📦 Packaging and Storage

Packaging: Typically packaged in 25 kg fiber drums lined with polyethylene bags, or customized per customer requirements (e.g., paper bags). 

Storage:

Store in a cool, dry, and light-protected area at temperatures below 25°C.

Shelf life exceeds 1 year. Avoid moisture, direct sunlight, and impact.

Maintain dry conditions during storage to prevent dust accumulation.

Handle as a non-hazardous chemical during transportation.