MY Polymers

LM-142-NI : Optical Coating / Adhesive

LM-142-NI is a low modulus (highly flexible) low refractive index UV curable coating/adhesive that does not require an inert atmosphere during the curing process. The material was optimized for curing by both UV LED and UV Mercury lamps. The main application is re-coating.



  Liquid state
RI liquid at 589 nm 1.410
Density, g/cm3 1.37
Viscosity, cps @ 25°C 3200
color Clear, yellow
  Cured state
RI cured at 589 nm 1.423
RI cured at 950 nm 1.417
Adhesion to glass, 90° Peel, g/cm 300
Elastic modulus,  MPa 10
Tensile Strength, MPa 3
Elongation to Break 110
Hardness Shore, A 70*

The product is supplied pre-filtered to below 1 micron particles.



  1. Avoid unnecessary exposure to ambient light and moisture.
  2. Long-term storage should be at ambient conditions of 10-30ºC.
  3. The shelf life is 12 months.


Curing can be achieved by any source of UV at 300-400nm. Typically, a dose of 1000-2000 mJ/cm2 is necessary.

Keep the bottle closed at all times when not in use. The material is sensitive to light.

Safety: Refer to the SDS


Note: The above information is believed to be reliable, but it is not to be taken as a representation, warranty or guarantee. Customers should perform their own QC, QA, and evaluation tests.


* Estimated

Updated: April 8, 2018