| 摘要 |
The present invention relates to the production and use of polyester polyols produced from at least one aromatic dicarboxylic acid or an alkyl ester of an aromatic dicarboxylic acid or the anhydride of an aromatic dicarboxylic acid and at least one α,ω-diol, wherein the formation of 1,4-dioxane from diethylene glycol is largely suppressed by means of specific reaction management. |
