Optical Brightener, Fluorescent Brightener

🧪 OPTICAL BRIGHTENER

Powder & Liquid Forms

Optical brighteners are fluorescent compounds used to enhance the visible whiteness and brilliance of textile surfaces. They absorb ultraviolet (UV) light and re-emit it in the blue spectrum, effectively neutralizing yellowish tones and creating a cleaner, brighter appearance.

⚙️ Technical Features

• 🧵 Applicable fibers: Polyester, Cotton, Nylon

• 💧 Available forms:

  • Powder: Superwhite B-2B, B-3B, B-4B, B-6B

  • Liquid: Superwhite NB Liq

• 🌈 Provides blue-toned whiteness

• 🧼 Excellent wash and light fastness

• 🧪 Highly effective even at low dosage

• ⚠️ Performance may be reduced by heavy metal ions — chelating agents recommended

🧺 Application Areas

• Textile dyeing and printing

• Cotton and polyester fabrics

• Nylon and polyamide fibers

• Medical textiles, school uniforms, technical fabrics

🧪 Superwhite Optical Brightener Series

Target Fiber: Cotton | Form: Powder & Liquid | Shade: Blue-Toned

📌 Typical Use Cases

• 👕 Cotton fabrics (t-shirts, underwear, home textiles)

• 🧪 Post-dyeing and printing brightness enhancement

• 🧼 High durability against washing and light exposure

Synonyms of Optical Brightener

• ✨ Optical Brightener

• ✨ Optical Whitening Agent

• ✨ Fluorescent Whitening Agent (FWA)

• ✨ Fluorescent Brightener

• ✨ Brightening Additive

• ✨ Stilbene Derivative (chemical class)

• ✨ Blue-Toned Brightener

• ✨ UV-Activated Brightener

🧪 Optical Brighteners – Types, Applications & Production

🎨 1. Types of Optical Brighteners

Optical brighteners are classified based on their chemical structure and fiber compatibility:

🧺 2. Application Areas

Optical brighteners are used across multiple industries:

🧵 Textile Industry

• Cotton, polyester, nylon, polyamide fabrics

• Post-dyeing and printing brightness enhancement

• Medical textiles, school uniforms, technical fabrics

🧼 Detergent Industry

• Added to laundry detergents (up to 40%)

• Neutralizes yellow tones for brighter whites

📄 Paper Industry

• Mixed into pulp for UV-enhanced whiteness

🧪 Plastics & Polymers

• Used in PVC, PE, PP, ABS, etc.

• Applied in injection molding, films, footwear soles

🏭 3. Production & Activity Value

⚗️ Manufacturing Process

• Synthesized via organic chemistry (stilbene, benzoxazole base)

• Final product diluted or modified for specific applications

• Activity level adjusted per sector (textile, detergent, paper)

📊 Activity Value (E₁/₁)

Measured via UV spectrophotometry:

⚠️ Critical Notes

• Heavy metal ions may reduce performance → use chelating agents

• Compatible with reactive dyeing and printing

• Can be added directly to fiber melt in synthetic production