I think the only real option for this is a clear plastic sheet that's had a chemical resistant thin film applied to the faces. One commercially available example is Makrolon AR2, it's polycarbonate with some proprietary coating that's listed as having >24hrs resistance to acetone and a few other chemicals.
According to Palstics International's Chemical Resistance Chart, the A-rated plastics (no solvent attack) towards acetone are:
ECTFE (Halar®): transparent films available
Fluorosint® PTFE: white
HDPE: transparent films available
Nylon®, Type 6/6: white
PP: clear sheets available
PPS: opaque white
Among these, polypropylene appears to be the ...
Plastics Design Library series include tabulated parameters for the variety of polymers.
One of such parameters is a PDL number rating from 0 to 9:
0: solvent dissolved disintegrated
2: severe distortion; oxidizer and plasticizer deteriorated
9: highest resistance, no change
In the table below I assembled data on thermoplastics ...