What is current status. do you still need process
You do not want to be synthesising volatile organic liquids. If you want to mix your own to save money: it's mostly THF / ketones, see here>http://www.carlon.com/MSDS.html L
TetraHydroFuran. Lovely stuff. Flashpoint of bugger all.
The chemicals used in the mfg. of pvc solvent cement are too noxious for home or amateur use. If you really want to do this you'll have to have location, safeguards etc. for commercial production.