The optical brightener OB-1 of Jinan Tonex Chemical is popular in South Korea

Optical brightener OB-1 or Fluorescent brightener OB1 is a commonly used fluorescent

brightener product. The optical brightener OB1 of Jinan Tonex Chemical is popular in

South Korea, which is the result of the combination of excellent product performance,

wide application range and the company's own advantages.

This successful case not only wins a good reputation for Jinan Tonex Chemicalin the international market, but also provides a useful reference for Chinese chemicalenterprises to go global.

Basicinformation of optical brightener OB-1:

•     Chemical name:2,2-(4,4'-stilbenyl)bisbenzoxazole.

•     Molecular formula: C₂₈H₁₈N₂O₂.

•     Molecular weight: 414.4.

•     Appearance: Yellow-green or bright yellowcrystalline powder.

•     Melting point: 353℃- 359°C.

Performancecharacteristics:

•     Good heat resistance: This is one of theoutstanding characteristics of optical brightener OB-1.It can remain stable athigh temperatures and is suitable for plastic products

processed at hightemperatures. It is also not easily decomposed in an environment

above 300℃.

•     Significantly whitening effect: It cansignificantly improve the whiteness and brightness of products, making the productappearance more white and beautiful.

•     Good stability: Insoluble in water, it hasgood compatibility with most polymers and is not easy to migrate.

Applicationrange:

•     Plastic industry: It can be used forwhitening and brightening of various plastics such as ABS, PS, HIPS, PA(nylon), PC (polycarbonate), PP, EVA and rigid PVC. It is widely used inplastic granulation, injection molding, film blowing and other processingprocesses.

•     Chemical fiber industry: It is suitable forwhitening of chemical fibers such as polyester fiber, nylon fiber andpolypropylene fiber. It has a significant effect on improving the whiteness andvividness of chemical fiber products. It can also be used for whitening ofpolyester stock solution and in the conventional polymerization of polyesterand nylon.

•     Recycled plastic field: After adding OB-1 to recycled polyester fiber waste,

bottle materials and slices, the recycledmaterials will appear whiter, and the chromaticity of different recycledmaterials will become more consistent, improving the quality of recycledplastics.

Precautions:

•     When adding any ultraviolet absorber to thepolymer, attention should be paid to appropriately adjusting the optimal dosageof optical   brightener OB-1.

•     When using optical brightener OB-1 for PE(polyethylene) and soft PVC,

special attention should be paid to controllingthe dosage. Excessive dosage will cause the migration of the brightener.

JinanTonex Chemical strictly controls the quality in the production process toensure that the product quality of each batch of optical brightener OB-1 isstable and meets the

requirements of the South Korean market. At the same time,it can ensure a stable supply of products and meet the needs of South Koreancustomers in a timely manner. This is very important for the productionplanning and supply chain management of South Korean enterprises.