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Optical brighteners, or fluorescent whitening agents, are used to make plastics, fibers, coatings, inks, and detergents appear whiter and brighter.
These products function by absorbing invisible ultraviolet light and re-emitting it as visible light in the blue range of the spectrum.
| OB | OB1 | OB3 | OB-C | |
| Appearance | light yellow or milk white powder | bright yellowish green crystals powder | yellow-green powder |
Pale yellow powder |
| Purity | 99.0%Min | 98.5%Min |
≥97%
|
/ |
| Melting point | 201~205ºC | 355~ 360ºC |
≥350ºC | 195-202ºC |
| Solubility | hardly soluble in water,but soluble in paraffin,mineral oils and ordinary organic solvents. | insoluble in water,but soluble in high boiling point organic solvent such as phenyl-chloride | / | / |
1. Textile Industry
Products: White or light-colored garments (e.g., shirts, wedding dresses, T-shirts), bedsheets, curtains, towels, carpets, sportswear.
Role:
-Compensate for yellowing in natural fibers (e.g., cotton, linen) caused by oxidation or impurities, enhancing visual whiteness.
-Improve vibrancy of colored fabrics (by emitting blue light to neutralize yellow tones, making colors appear brighter).
2. Detergent Industry
Products: Laundry detergents, fabric softeners, soaps.
Role:
-Adhere to fabric surfaces to restore brightness to yellowed or faded white clothing through optical compensation.
-Prolong the "like-new" appearance of fabrics, reducing dullness caused by repeated washing.
3. Plastics & Packaging Industry
Products: Plastic wraps, food containers (outer layers), appliance casings (e.g., white refrigerators, air conditioners), toys, disposable tableware.
Role:
-Neutralize yellowish tints in raw plastics (e.g., PP, PVC), creating a cool-toned, high-brightness finish for white plastic products.
-Enhance color saturation in colored plastics (e.g., improving print clarity on transparent plastic bottle labels).
4. Paper Industry
Products: Printing paper, toilet paper, paper cups, packaging paper, book pages.
Role:
-Counteract yellowing caused by lignin residue in paper (especially recycled paper), improving whiteness.
-Reduce reliance on bleaching processes, lowering production costs while meeting high-whiteness standards.
5. Cosmetics & Personal Care
Products: Face masks, moisturizers, shampoos, toothpaste (some types), nail polish.
Role:
-Create an "instant brightening" effect in skincare products (using light reflection to make skin appear fairer).
-Enhance the whiteness of toothpaste or reduce dullness in hair when used in shampoos (subject to safety regulations).
6. Paints & Inks Industry
Products: White wall paints, metallic paints, printing inks (e.g., magazines, packaging).
Role:
-Improve brightness and opacity of white paints, reducing the need for thick coatings.
-Enhance contrast in colored inks for sharper printed patterns.
7. Home & Decoration Industry
Products: Wallpaper, ceramic fixtures (e.g., toilets, sinks), artificial marble, storage boxes.
Role:
-Mask uneven coloration or impurities in materials to achieve a "high-gloss white" appearance.
-Replace costly whitening additives in ceramic glazes, lowering production costs.
Market Size:
The global fluorescent whitening agent market has shown steady growth, valued at approximately $1.5-2 billion in 2023, with OB and OB-1 accounting for 30%-40% of the total market share.
Growth Drivers:
Rising demand for high-whiteness products in plastics and textiles (e.g., white appliances, fast fashion).
Environmental concerns driving the replacement of traditional bleaching processes (reducing wastewater pollution).
Manufacturing expansion in emerging markets (e.g., Southeast Asia, South America).
| Property | OB | OB-1 |
| Chemical Structure | Bis-styryl biphenyl derivative | Modified biphenyl ethylene derivative |
| Weather Resistance | Moderate (UV-sensitive) | High (UV- and heat-resistant) |
| pH Range | Acidic to neutral (pH 3-7) | Broad (pH 2-10) |
| Primary Applications | Textiles, detergents, low-end plastics | High-end plastics, industrial coatings, specialty materials |
| Cost | Low | High (complex production) |
Key Markets: Asia (China, India), Africa.
Applications:
Plastics: Disposable tableware, low-end packaging films.
Textiles: Fast-fashion apparel, home textiles (bed sheets, towels).
Detergents: Low- to mid-range laundry powders (cost-sensitive products).
Key Markets: Europe, North America, Japan, South Korea.
Applications:
High-End Plastics: Automotive interiors, electronics casings (e.g., smartphones, laptops).
Industrial Coatings: Automotive paints, outdoor metal coatings.
Specialty Materials: Medical textiles, high-temperature-resistant fibers.
OB Market:
Highly competitive, with suppliers concentrated in China and India; price wars are common.
Low technical barriers but must meet basic performance standards.
OB-1 Market:
High technical barriers, dominated by suppliers in Europe, the U.S., and Japan; profit margins are higher (20%-30%).
Relies on patented technology, with active R&D for alternatives (e.g., derivatives with better weather resistance).
Demand Growth Areas:
OB: Emerging markets' demand for low-cost consumer goods (e.g., plastic packaging, textiles).
OB-1: New energy vehicle interiors, consumer electronics (high-gloss plastic casings), outdoor construction materials.
Technology Advancements:
Development of eco-friendly formulations (reducing solvent use).
Improved stability of OB-1 under extreme conditions (high heat, humidity).
Challenges:
Volatility in raw material supply chains (e.g., petroleum derivatives).
Competition from emerging alternatives (e.g., inorganic whitening agents).
Asia-Pacific (Largest Consumer Market):
OB Dominance: China is the production hub; India and Vietnam show rapid demand growth (textile industry shift).
Rising OB-1 Demand: Driven by Japan/South Korea's electronics and automotive industries.
Europe & North America:
OB-1 Dominance: High-end manufacturing (automotive, electronics) demands superior weather resistance.
Weifang Phoenix New Material Co., Ltd
Weifang Hota New Material Technology Co., Ltd. is a high-tech chemical enterprise integrating research and development, production, sales and technical services. Headquartered in Weifang, Shandong Province. Its production facilities are located in Weifang Binhai Chemical Industry Park, a state-approved chemical industry park.
Our mission is to be the leading sustainable "one-stop shop" chemical solutions company, providing customers with innovative, science-led, differentiated products and solutions. To this end, we provide a safe and healthy working environment for our employees and comply with all local, national and international regulations.
1.Q:How's the quality?
A:We are the source factory, quality is guaranteed.
2.Q:When does it ship?
A:We have standardized processes to ship as fast as possible.
3.Q:How do you protect the after-sales?
A:We keep samples of each batch and support returns and technical traceability in case of quality problems.
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