MY Polymers

LM-142-NI : Optical Coating / Adhesive

LM-142-NI is a low modulus (highly flexible) low refractive index UV curable coating/adhesive which does not require 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 1.409
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 1000
Elastic modulus,  MPa 28
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 in 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, warrantee or guarantee. Customers should perform their own QC, QA and evaluation tests.


* Estimated

Updated: April 8, 2018