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Optical Brightener OB-1

Description

Optical Brightener OB-1 is a high-performance fluorescent whitening agent used to improve whiteness in engineering plastics and fibers. It is especially effective in polyester, nylon, and high-temperature resins, offering brilliant blue-white shades and enhanced visual quality.

Mechanism & Features

  • Excellent thermal resistance (up to 350°C)
  • Stable and effective at low dosage
  • Provides strong brightening effect in transparent and colored materials
  • Compatible with PET, PA, PC, and ABS

Technical Specifications

  • Appearance: Yellow-green powder
  • Melting Point: 357–360°C
  • Recommended dosage: 0.01%–0.05%

Applications

  • Polyester fibers and films
  • Nylon molded parts
  • Engineering plastic compounds
  • Masterbatch for PET and PA system

Usage Recommendations

  • Improves brightness and hides yellowing
  • Maintains performance in high-heat applications
  • Widely used in both virgin and recycled materials

FAQ

  1. Is OB-1 suitable for transparent products?

Yes. It enhances brightness without affecting transparency when used correctly.

  1. Can it be blended into masterbatch?

Yes. OB-1 is easily incorporated into masterbatches for better dosing and dispersion.

  1. Is it effective in recycled polyester?

Yes. OB-1 helps improve appearance in recycled PET and nylon blends.

  1. Does it change color over time?

No. It remains stable under typical usage conditions with proper storage.

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