We can use acetone or Chlorobenzene. My question is "What is the benefit (or is there any benefit) of using especially "anisole" as a solvent for PMMA solution preparation?
Indeed, I would not recommend acetone among most suitable solvents for PMMA. Please check, for its possible interest concerning to your query: https://www.researchgate.net/post/With_PMMA_which_solvent_to_use
With regards to anisole; you may want to check its NIOSH 'safety card': https://www.cdc.gov/niosh/ipcsneng/neng1014.html