Optical Brightener OB for Coating

As Low as 0.01% Dosage | Universal Whitening Agent for Plastics, Coatings & Inks

It can help colors become more brilliant and get outstanding brightening ability. Adding optical brightener OB can produce a bluish tinge and mask yellowness, as well as create whiter look than normal white appearance. It is an environmental friendly brightener.

Optical brightener OB is widely used in PVC, PE, PP, PS, ABS, PMMA, POM and other thermoplastic plastics as well as thermosetting plastics, polyester fiber

1. PVC:

In the soft or hard PVC:

Whitening: 0.01-0.05% (10－50g/100kg material).

Transparency: 0.0001～0.001% (0.1－1g/100kg material).

2. PS:

Whitening: 0.001% (1g/100kg material).

Transparency: 0.0001～0.001 (0.1－1g/100kg material).

3. ABS:

Adding 0.01－0.05% of this product to ABS can effectively clean the original yellow to whitening it.

4. Polyolefin

It has good whitening effect on polyethylene and polypropylene.

Transparency: 0.0005～-0.001% (0.5－1g/100kg material).

Whitening: 0.005-0.05% (5－50g/100kg material).

10kg or 25kg/ fiber drums. It can be packed in other forms according to user's requirements.

Shelf life: not more than 24 months in the room temperature.

1.With our own factory, R&D, sales system

2.Establish a complete stock of conventional optical brightener products.

3. With a complete sample management system, we can provide testing and OEM services.

4. Integrate industry resources and academic resources to create a efficient R&D technical team to provide customers with customized technical solutions.

Tonex chemical optical brightener OB is avaliable REACH Cetitificated.

Tonex chemical optical brightener OB is FDA Compliance.

【optical Brightener OB FAQ】

Q1: What's the difference between OB and OB-1?
A: OB has a lower melting point (~200℃), suitable for general plastics, coatings, and inks. OB-1 has a higher melting point (358℃), suitable for high-temperature engineering plastics and polyester fiber. If processing temperature exceeds 250℃, choose OB-1.

Q2: Does OB cause haze in transparent plastics?
A: No. OB has light transmittance ≥96%, completely dissolves in transparent plastics without causing haze or particle sensation, maintaining product transparency.

Q3: Why isn't the whitening effect good enough after adding OB?
A: Possible reasons: ① Insufficient dosage ② Poor dispersion ③ Base material has strong yellow tone. Try increasing dosage or extending mixing time.

Q4: Can OB be used for food contact materials?
A: Yes. OB is FDA certified, non-toxic and odorless, suitable for food contact grade plastic products and cosmetic packaging.

Q5: How to add OB in coatings?
A: Add during grinding or letdown stage, ensure thorough dispersion. Recommended dosage: 100-500g per ton.

Q6: Can I get a sample?
A: Yes, free samples available. You only pay for shipping.

New Section: Why Is Optical Brightener OB/OB-1 the Industry's Mainstream Choice?】

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