MY Polymers

JET-144: Inkjet Compatible Low RI Optical Material

JET-144 is a low viscosity low refractive index UV curable coating suitable for inkjet applications.

Surface tension and viscosity are compatible with some widely used piezoelectric DOD print heads.

The index is 1.435 at 1550 nm.


  Liquid state
RI liquid at 589 nm 1.419
Density, g/cm3 1.22
Viscosity, cps @ 25°C 13
Surface tension, dyne/cm 26.7
color Clear, slightly yellowish
  Cured state
RI cured at 589 nm 1.443
RI cured at 1550 nm, estimated 1.435
Minimum Curing Energy (mercury lamp) 1-2 J/cm2
Density, g/cm3 1.29
Adhesion to glass Good
Surface cure Good (non tacky)
Mechanical appearance Flexible coating
Lowest boiling point component/ % in formulation 200⁰C/ 8%

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


  1. Avoid unnecessary exposure to ambient light.
  2. The shelf life is 12 months in sealed bottles.


Curing can be achieved by any source of UV at 300-400nm under inert conditions. A dose of 500-1000 mJ/cm2 is necessary. Although inert atmosphere is preferred, curing in air is also suitable.

Keep the bottle closed in all times when not in use. The material is sensitive to moisture.  Absorption of moisture may cause haze.

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.


Updated: June 18, 2020