Equation of state

Hello all,

I am currently trying an injection molding simulation using Arbitrary Lagrangian Eulerian method. The material model I am using is *Mat_ale_viscous, which requires an Equation of state. I tried searching for the parameters online, but could not find anything specific for my material. However I have the PVT curve from the Moldflow software. Can anyone suggest me how I can convert from PVT curve to Equation of state (Linear polynomial or Gruneisen) parameters.

Thanks in advance.