It‘s about as protectionist as can be. That‘s mainly because of the really nasty corprorate sovereignty clauses in the agreement (which are officially called „investor state dispute settlement“ or ISDS in an attempt to make it sound so boring you‘ll stop paying attention). Those clauses basically allow large incumbents to force the laws of countries to change to their will. Companies who feel that some country‘s regulation somehow takes away „expected profits“ can convene a tribunal, and force a country to change its laws. Yes, technically a tribunal can only issue monetary sanctions against a country, but countries who wish to avoid such monetary payments will change their laws.