Fluorene derivatives, optical plastic / Fine Materials Business

OGSOL acrylate : For photo-setting resin

The basic structure of OGSOL acrylate is bisaryl fluorene, with the advantages of a high refractive index, low cure shrinkage, and high transparency. Our lineup includes OGSOL EA, the standard type, and the OGSOL EA-F series whose viscosity is reduced to improve handling performance. As photoinitiators (or thermal polymerization initiators) are added to these products, it is easy to cure them by UV irradiation (or heating).

Advantages

  • High refractive index
  • High transparency
  • High thermostability
  • Low cure shrinkage rate
  • Low hygroscopicity

Example of usage

  • FPD related materials, coating ingredients
  • Optics adhesives
  • Antireflective coating
  • Resist additives
OGSOL acrylate : For photo-setting resin Image

Physical properties (resin)

Product name OGSOL
EA-0200
OGSOL
EA-F5003
OGSOL
EA-F5503
OGSOL
EA-F5510
(For reference)
Bis-A type acrylate
Advantages High refractive,
low shrinkage
High refractive,
low viscosity
High refractive,
low viscosity
High refractive,
low viscosity
Appearance Clear viscous liquid Clear viscous liquid Clear viscous liquid Clear viscous liquid Clear viscous liquid
Solvent content Contained Not Contained Not Contained Not Contained
Viscosity
(mPa · s : 25℃)
Before curing > 100,000 2,000-3,000 2,000-3,500 10,000-15,000 800-1,000
Refractive index
(589 nm)
1.616 1.581 1.591 1.598 1,538
Hue (APHA) < 100 < 50 < 50 < 50 < 50
HAZE < 0.1 < 0.1 < 0.1 < 5
Transmittance rate
(% : 400nm)
After curing Film Per
(100μm)
85.3 85.4 85.6 85.1 86.5
Refractive index
(589 nm)
Film Per
(100μm)
1.626 1.607 1.614 1.616 1,562
Tg (℃) 179 113 127 141 83
Volume absorption coefficient (%) Bulk
(2mm)
1 3 4
Water absorption (%) 0.08 0.09 0.11 0.24

* The data shown in the table are for the purpose of reference only. Listed values are not intended to provide any guarantee for products.
◎Products which provide a high hardness and high heat resistance have been developed in addition to the high refractive rate. Contact the following section for more details.

● Curing conditions
Photoinitiator : 3% of 'Irgacure 184' added
Irradiator : High voltage mercury lamp
UV integral light value : 360 mJ/cm2 (for film)
  : 2000 mJ/cm2 (for bulk)
● Measuring Method of physical properties
Transmittance rate   : 400 nm ; per 100μm
Tg (glass transition temperature)   : Measured by DMA
Volume absorption coefficient   : Calculated from density
    complying with JIS K 7112
Water absorption   : Complying with JIS K 7209
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