SINOMER® BPEFDA (Bisphenol Fluorene Ethoxylate Diacrylate, CAS 161182-73-6) is a difunctional acrylate monomer containing a rigid fluorene backbone and flexible ethoxy chains. It offers exceptionally high refractive index (>1.600), high hardness, and excellent chemical resistance. The monomer is supplied as a blend with OPPEA (≤50%) to optimize handling and reactivity. SINOMER® BPEFDA is specifically designed for UV‑curable systems where high clarity and high refractive index are required, such as optical films, advanced coatings, inks, and adhesives.
SINOMER® BPEFDA
(Ethoxylated Bisphenol Fluorene Diacrylate – High Refractive Index Monomer for Optical Applications)
Chemical Name: 9,9-Bis[4-(2-acryloyloxyethyloxy)phenyl]fluorene;
Ethoxylated Bisphenol Fluorene Diacrylate
CAS No.: 161182-73-6
MF: C35H30O6
MW：546.61
Molecular structure:
![9,9-双[4-(2-丙烯酰氧基乙氧基)苯基]芴 结构式](https://www.chemicalbook.com/CAS/GIF/161182-73-6.gif)
SINOMER® BPEFDA (Bisphenol Fluorene Ethoxylate Diacrylate, CAS 161182-73-6) is a difunctional acrylate monomer containing a rigid fluorene backbone and flexible ethoxy chains. It offers exceptionally high refractive index (>1.600), high hardness, and excellent chemical resistance. The monomer is supplied as a blend with OPPEA (≤50%) to optimize handling and reactivity. SINOMER® BPEFDA is specifically designed for UV‑curable systems where high clarity and high refractive index are required, such as optical films, advanced coatings, inks, and adhesives.
Appearance | Colorless to light yellow transparent liquid |
Color (APHA) | ≤ 50 |
BPEFDA content (%) | ≥ 50 |
OPPEA content (%) | ≤ 50 |
Refractive index (nD²⁵) | > 1.600 |
Viscosity (cps, 25°C) | 16,000 ± 500 |
High refractive index (>1.600) – ideal for optical applications
Excellent hardness – provides scratch resistance and durability
Good chemical resistance – withstands solvents and chemicals
UV‑curable – fast polymerization under UV/EB radiation
Compatible with common monomers and oligomers – versatile formulation
Optical films – brightness enhancement films, antireflective coatings, and light guide plates
High‑performance coatings – hard coats for plastics, metals, and glass
UV adhesives – for optical bonding and electronic assembly
UV inks – offset, screen, and inkjet inks requiring high gloss and durability
25kg,200kgs/drum.
Being kept in dry, clean warehouse with well ventilation.
Avoid exposing to light and heating.
Protecting the product from leakage, rain and insolation during transportation.
We offer a variety of options to help you find the right product for your application
Provide formulation optimization support for water-based/solvent-based systems
Full coverage of REACH, FDA, and GB standards
99.8% on-time delivery rate, 10,000-ton production capacity guarantee
