OB-1 For PP

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  • Delivery term:

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  • Last update:

    2021-11-02 22:26

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Company Profile
Hubei Hongxin Chemical Co., Ltd
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No.09 Makou Industrial Park, Wuxue, Hubei, China.

Product details
Product Description

1. Quick details

Product Name: optical brightening agent OB-1 (green/yellow)

C.I.NO.: 393

Molecular formula: C28H18N2O2 Molecular weight: 414.4

Structural formula:

2. Physical and chemical index:

1) Appearance Yellow greenish powder

2) Content ≥98.0%

3) Melting point 353 — 359℃

4) Mesh size ≥800mesh (or customize)

3. Product features

Inexpensive price

Batch quality consistency

Less foreign matters

4. Application

Polypropylene is a kind of polymer made from propylene by addition polymerization. It is a colorless, odorless, nontoxic and translucent solid substance. It is widely used in the production of clothing, blankets and other fiber products, medical devices, automobiles, bicycles, parts, transportation pipelines, chemical containers, and food and drug packaging.

Polypropylene is a kind of thermoplastic synthetic resin with excellent properties, which is colorless and translucent. With chemical resistance, heat resistance, electrical insulation, high strength mechanical properties, good abrasive resistance and process-ability, polypropylene has been rapidly developed and applied in many fields such as machinery, automobile, electronic and electrical appliances, construction, textile, packaging, agriculture, forestry and fishery, food industry and so on. In recent years, with the rapid development of China's packaging, electronics, automobile and other industries, it has greatly promoted the development of China's industry. Because of its plasticity, polypropylene is gradually replacing wood products. Because of its high strength, toughness and wear resistance, polypropylene has gradually replaced the mechanical function of metal. In addition, polypropylene has good graft and composite functions, and has great application space in concrete, textile, packaging, agriculture, forestry and fishery.

Optical brightening agent OB-1 is a kind of optical brightener for polypropylene. In the finished product market of polypropylene, some of the producers use the recycled PP in a certain proportion, that will give yellowish or gray color to the finished products, which can not meet the customer’s requirements. OB-1 can absorb the ultraviolet light in nature and give out the visible blue light to neutralize the yellow color of the PP or recycled PP. So the finished product looks brighter and whiter. Besides, the PP products are usually processed under high temperature, normally between 170-270℃.OB-1 can work really well under this temperature. The dosage of OB-1 in PP(virgin) is about 100-200ppm, which is really little, but can increase the whiteness value over 10%. So it is a very high efficiency and low cost additive for polypropylene.


What is the Recommended dosage of OB-1 in PP products?

A: The dosage depends on the proportion of the virgin material and the recycled material. For 100% virgin PP, the dosage we recommend is as below:

From this chart, you can see, it’s important to control the dosage in appropriate percentage, over dosing will cause contrary effect. (the whiteness value in chart is only for demonstration,it’s not actual test value)

What is your minimum order quantity?

minimum quantity is 500kgs.

Can you send me samples?

Samples below 1kg are free to be dispatched by TNT or EMS, express service can cover most of major cities all over the world. For sample over 1kg, let’s negotiate with the express freight friendly.

Which level of quality are your products?

We have passed ISO9001 quality management system certification. In additional, we has been implementing lean management model since 2014. We can guarantee the top quality in our industry.

Company Profile

Hubei Hongxin Chemical Co., Ltd, established in 2006, is located in Makou Industrial Park, Wuxue, Hubei. It has good fine chemical production conditions and advanced testing equipment. The self-developed production technology has the characteristics of high efficiency, energy saving and environmental protection, and has obvious advantages in the same industry. Our professional technical team will wholeheartedly provide quality technical service in product application to our customers.

Our Advantage

1. We know international regulations well. We have registered for EU-reach, pr-registered for Korean -reach, and currently doing KKDIK (Turkey-Reach). Besides, we do RoHS test through 3rd party every year. We also done test for regulation AP(89)1 and EN71-3 for toy safety and food contact safety.

Related certificates:

2. We pay attention on long-term development and social liability. We committed to low-carbon, green, and circular economy, taking the road of sustainable development of resource-saving and environment-friendly. We have on line monitors on water and gas emission. Don’t worry about suddenly close down or restrained production regulatory measures imposed on us, because the nature of our production and development coincident the core value of environmental protection.

3. We are also doing well as an important tax payer and job provider in our community.

Team Building

To enhance the solidarity of whole team, we regularly hold various interesting activities.

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