FBA 185 (Optical Brightener CXT)
PHYSICAL PROPERTIES
| (Item) | (Specification) |
| (Appearance) | (Light yellow powder) |
| (Content, %) | ≥98.0% |
| (Moisture, %) | ≤5.0% |
| (Ionicity) | (Anionic) |
| (Max. Absorption Wavelength, nm) | 350 ± 2 |
| (Max. Emission Wavelength, nm) | 432 ± 2 |
| (pH Value) | 7.0～9.0 |
| (Recommended Dosage for PVC, phr) | 0.03～0.08 (Based on 100 parts PVC resin; rarely used in rigid PVC, mainly for flexible or coating systems) |
Raw Materials & Manufacturing Process
Main Raw Materials:
4,4′-Diaminostilbene-2,2′-disulfonic acid (DSD acid), cyanuric chloride, morpholine, aniline derivatives, liquid alkali, hydrochloric acid
Manufacturing Process:
Under low-temperature conditions, cyanuric chloride undergoes the first condensation reaction with DSD acid. The temperature is then increased to complete the second and third condensation reactions with amine intermediates.
The product is subsequently acid-precipitated, filtered, washed to remove salts, dried, and pulverized to obtain the final powder.
Safety & Environmental Performance
- Environmentally friendly anionic optical brightener
- Free from heavy metals and harmful volatile substances
- Complies with EU RoHS and REACH regulations
- Classified as a non-hazardous chemical
Applications
PVC-related applications:
- Flexible PVC films
- Artificial leather surface coatings
- Water-based inks
- Adhesives
- Flocking products
Other applications:
- Detergents
- Cotton and linen textiles
- Paper whitening
Key Features & Advantages
- Excellent Water Solubility:
Suitable for water-based PVC coatings and ink systems - Outstanding Whitening Effect:
Produces a bluish-violet optical tone, enhancing brightness and visual appeal - Uniform Dispersion:
No spotting; does not affect printing or lamination performance - Cost-Effective:
Ideal for large-scale production of daily-use flexible PVC products
Packaging, Storage & Shelf Life
Packaging:
- 25 kg per package (fiber drum or woven bag)
Storage:
Store in a cool and dry place, protected from moisture and direct sunlight
Transportation:
Transport as non-hazardous chemical goods
Shelf Life:
12 months from the date of manufacture
