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OPTICAL BRIGHTENER OB-1 CAS NO.1533-45-5/CI.NO.393 in Pakistan

Pakistan is the second largest plastic packaging market in South Asia. The main industries use OPTICAL BRIGHTENER OB-1 CAS NO.1533-45-5/CI.NO.393 involved arevarious types of plastics, packaging and printing products,such as polyester staple fiber, PVC sheet pipe, masterbatch, PP bag/bottle, EVA/PVC sole.

  • Brand: Raytop
  • Appearance: Yellow Green
  • Purity: 98.5%
  • Color shade: Blue
  • Finess: 300 mesh
  • Package: 10kg/25kg per fiber drum
  • Shelf Life: 2 years
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Pakistan is the second largest plastic packaging market in South Asia. According to statistics, Pakistan’s imports of the plastics industry in 2019 were US4 million, and in 2020 it exceeded US.2 billion. Among them, imports of plastic packaging machinery reached US0 million. , Japan, Germany, Britain, Italy, South Korea, West and other countries have become Pakistan's main suppliers of plastic machinery industry. In recent years, Pakistan has seen significant growth in plastics, packaging, printing and related industries. The plastics industry is also booming at an average annual growth rate of 15%. The total production capacity is estimated at 624.2 billion tons per year. There are more than 6000 companies producing plastics, and the per capita consumption of plastic products per year is 2.2 kilograms. Moreover, almost all machinery and equipment used to manufacture various types of plastics, packaging and printing products are imported.

In terms of the total labor force, the plastics industry has become the country's second largest industry. The plastics industry is also booming at an average annual growth rate of 15%. The total production capacity is estimated at 624.2 billion tons per year. There are more than 6000 companies producing plastics, and the per capita consumption of plastic products per year is 2.2 kilograms. Moreover, almost all machinery and equipment used to manufacture various types of plastics, packaging and printing products are imported.


As our company’s main industry, optical brightener exports 12-16 tons to Pakistan every month. Our customers include not only distributors but also end customers. The main industries involved arevarious types of plastics, packaging and printing products,such as polyester staple fiber, PVC sheet pipe, masterbatch, PP bag/bottle, EVA/PVC sole.


For the plastics industry, exporting to Pakistan, we mainly have such several models, optical brightener OB OB-1 KCB FP-127 KSN, of which OB-1 has the largest quantity. Below we focus on the characteristics and uses of the optical brightener OB-1.

 

Product:Optical Brightener OB-1   

Chemical Name:2.2’-(4.4’-diphenol vinyl) dibenzoxazol

CAS No.:1533-45-5

C.I. No.:393

Molecular Formula:C28H18N2O2

Molecular Weight:414 

Technical Index

Appearance:Yellowish/greenish powder

Molecular weight:414.4    

Melting Point:356℃~360℃

Purity:≥98.5%     

Fineness:≧200 mesh

Volatile content:≦0.5%    

Ash content:≦0.5%

Uses:Mainly be used in whitening of polyester and plastic, as well in whitening of Nylon during polymerization. 

For whitening of polyester and nylon; also used in ABS, PS,PVC, HIPS, PA, PC, PP, PE,PET,EVA, PVC, etc.    

Rate of use: (per 1000kg of substrate)   Polyester: 75-300g  EVA, PP, nylon: 75-200g

Package:25kg per fiber drum



Regarding the optical brightener OB-1, you will have the following questions. In response to your questions, we will answer as follows:


1. Why is the appearance of the optical brightener OB-1 different from yellow and green?


 At first, the appearance of the optical brightener OB-1 of the old process was dark yellow. With the continuous improvement of the process, two appearances of yellow and green came out. In fact, the PH value was adjusted during the production process. When the PH value is greater than 7, the appearance is yellow, and when the pH value is less than 7, the appearance is green powder.

optical-brightener-ob-1-1533-45-5.JPG

2. What is the essential difference between the yellow appearance of the optical brightener OB-1 and the green appearance?


First of all, as a masterbatch industry, the particles produced with green powder are green, and the particles produced with yellow powder are yellow. Because customers have different requirements for different colors, no matter whether it is yellow or green, both have a hot sale in the market.

opical-brightener-yellow-masterbatch.JPGoptcal-brightener-green-masterbatch.JPG

Secondly, the shades of the two are also slightly different. The shade of yellow is slightly blue-violet, while the shade of green is only blue.


Finally, the yellow-looking optical brightener OB-1 has a melting point 5 degrees Celsius higher than that of the green-looking optical brightener. Of course, this difference is also very small compared to 360 degrees melting point.

In a word, to the final whitening effect, in fact, there is not much difference between the two.


3. Regarding packaging, our general packaging is 25kg/fiber drum, 450kg or 500kg or 675kg /pallet, about 5mt per 20'FCL.

   Of course, we can also customize a small package of 10 kg or customize the package according to customer requirements.


4. For the Pakistani market, there is another special situation that buyers like to define their own product models. The purpose of this is to protect their purchasing channels and prices.we also can accept.


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