Are resins the same as polyurethane?
The main raw material is the reaction of molecules with multiple hydroxyl groups with different molecular weights and molecules with multiple isocyanate groups. There are many ways of production. Polyurethane applications are in too wide a variety of ways.
As far as polyurethanes are concerned, it is obtained by the reaction of polyols and isocyanates.
Polyurethane is a kind of resin, resin has many kinds, phenolic resin, ABS resin, aldehyde ketone resin, PVC, PE, PP, and so on.