Optical Brightener OB-1 for PSF

Optical Brightener OB-1 can be used on polyester fiber, nylon fiber, polypropylene, hard PVC, ABS, EVA, PS, polycarbonate etc. For high temperature resistant plastics, only ob-1 can be used, and the addition amount of optical brightener ob-1 is small and the whitening degree is high. We have optical brightener OB-1 in two grade, say OB-1 Yellowish and OB-1 Greenish. OB-1 Greenish is more popular on the market.

Tonex Chemical Optical Brightener OB-1 can be used on polyester fiber, nylon fiber, polypropylene, hard PVC, ABS, EVA, PS, polycarbonate etc. For high temperature resistant plastics, only ob-1 can be used, and the addition amount of optical brightener ob-1 is small and the whitening degree is high.

Every 1000kg materials to add OB-1 brightener:

1. EVA, polypropylene, nylon, polycarbonate in the amount of 75- 200 g.

2. The adding amount of polyester fiber is 75g- 300g

Tonex chemical optical brightener OB, optical brightener OB-1, optical brightener CBS-X and optical brightener BBU Liquid are valiable REACH Cetitificated.

While OB-1 is not explicitly listed as a restricted substance in some ZDHC MRSL versions, it's important to assess its use in the context of ZDHC guidelines, as it may be included under broader categories of hazardous chemicals or be subject to specific concentration limits.

【Optical Brightener OB-1 FAQ】

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

Q2: How to choose between Greenish and Yellowish?
A: Greenish is the market-preferred choice with more popular whitening effects. Request free samples for comparison testing.

Q3: Does it really work for recycled materials?
A: Yes. OB-1 is especially suitable for recycled polyester bottle flakes and chips - it not only whitens but also unifies color shade across different batches.

Q4: Can I get a sample?
A: Yes, free Greenish/Yellowish samples available. You only pay for shipping.

Q5: Does OB-1 have any certifications?
A: OB-1 is non-toxic and FDA certifiable, compliant with EU environmental standards, suitable for food contact materials.

【Why Choose Us?】

✅ Free Formulation Optimization - Help you find the optimal dosage
✅ Free Samples - Both shades available, test before ordering
✅ 1-on-1 Technical Support - Solve dispersion, yellowing and other issues
✅ Small Package Trials - 25KG MOQ, low trial cost
✅ Professional Test Reports - Purity, melting point, fineness reports included

Optical brightener OB vs Optical Brightener OB-1 Comparison Table

Product Specification Comparison

Application Scenarios Comparison

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