Free database of polymers with Hansen parameters
I'm afraid that due to copyright claims the only database available is HSPiP, plus there is the most recent handbook Hansen, C. M. Hansen solubility parameters: a user’s handbook, 2nd ed.; CRC Press: Boca Raton, 2007. The book costs ten times less than a database and contains tables for solvents on pp. 345 -- 485, and for polymers on pp. 487 -- 500.