Optical Brighteners

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Ranbar Pigment

Optical Brightener OB-1 - Optical Brightener for Plastic

Optical Brightener OB-1 - Optical Brightener for Plastic

Brand: Ranbar
Product Name: Optical Brightener OB-1
Molecular weight: 414.45
Molecular formula: C28H18N2O2
Compatibility: soluble in organic solvents
Chemical structure: 2.2'-(4.4'-diphenol vinyl)bisbenzoxazole
Product packaging: 25kg
Appearance: light yellow or light green crystalline powder
Recommended dosage: 200-500g per 1000kg material
Advantages: low volatile matter, high color fastness, excellent thermal stability and whitening properties;
Application: Suitable for whitening of polyester and plastics, and nylon during polymerization.

Technical Parameters:
Product Name: Ranbar Optical Brightener OB-1
CAS No.: 1533-45-5
C.I. No.: 393
Melting point: 358-360°C
Purity: ≥98.5%
Fineness: ≧100 mesh
Volatile content: ≦0.3%
Ash content: 0.5%
Temperature resistance: 355—360°C

Optical Brightener OB-1 Color Comparison Chart

Features:
Ranbar Optical Brightener OB-1 is an oxazole optical brighteners suitable for  plastics. It is insoluble in water and has stable performance. It has good heat resistance, light resistance, chlorine bleaching resistance and migration resistance. It has good compatibility with most polymers and has a wide range of applications. It is used for molding and processing various plastics and plastic products at high temperatures. Because of its good color fastness, it is also particularly ideal for whitening polyester fibers, polyester, cotton and other fiber blends. It can be used for whitening of polyester stock solution.

Scope of application:
Ranbar OB-1 optical brightener for plastic can be used in various polymers, especially polyester, polyamide fiber and polycarbonate, acrylic polymer, styrene homopolymer, copolymer including ABS, polyolefin and EVA, etc. Main applications include polyester, polyamide, polypropylene fibers, injection molded products, films and sheets, etc.

Instructions:
Mix Ranbar Optical Brightener OB-1 with 0.01-0.05% of the weight of plastic or polyester pellets, before molding various plastic products or spinning polyester fibers, and mix them evenly with the materials.

Safety guidance:
Ranbar Optical Brightener OB-1 requires no special safety precautions for use as long as good industrial practice is followed. Prevent dust formation and keep away from sources of ignition.

Core Services
3 large Warehouses

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