Advantage of Polyether Polyols over Polyester Polyols
§ Various functionality polyols (2 to 8) are available.
§ Equivalent weight can be widely changed.
§ The viscosities are lower than those of polyesters.
§ Production costs are cheaper than those of aliphatic polyesters
§ Resulting foams are hydrolysis resistant
§ Since functionality and equivalent weight of polyether polyols can be widely varied, polyether polyols are extensively used for producing various polyurethanes such as flexible, semi-flexible and rigid foams as well as elastomers, coatings,
adhesives, sealants and resins.
Among the advantages polyether polyols over polyester polyols, the former polyols
lower oxidation resistance than that of the latter