| prov:value
| - 1,2,6-hexanetriol, sorbitol, pentaerythritol, polyether polyols, polyester polyols and the like with a polyisocyanate such as 2,4-tolylene diisocyanate, 2,6-tolylene diisocyante, 4,4???-diphenylmethane diisocyanate, 1,6-hexamethylene diisocyanate, 4,4???-dicycohexylmethane diisocyanate and the like, and polysulfones such as the reaction product of the sodium salt of 2,2-bis(4-hydroxyphenyl) propan
|