申请人:ExxonMobil Chemical Patents Inc.
公开号:US10351506B2
公开(公告)日:2019-07-16
This disclosure relates to methods for producing purified aromatic esters useful as plasticizers, to the purified aromatic esters, and to polymer compositions containing the purified esters. The purified aromatic esters can be produced by esterifying carboxylic acid with methyl or ethyl alcohol, separating the resulting methyl or ethyl esters from the carboxylic acid and any byproduct impurities, and then transesterifying the methyl or ethyl esters with C4 to C14 alcohol to produce the purified aromatic esters. Additionally, precipitation, filtration, and wash steps can be employed to purify the carboxylic acid, the methyl or ethyl alcohol, and/or the aromatic esters.
本公开涉及生产用作增塑剂的纯化芳香族酯的方法、纯化芳香族酯以及含有纯化酯的聚合物组合物。纯化芳香族酯可通过以下方法生产:将羧酸与甲醇或乙醇酯化,将生成的甲酯或乙酯与羧酸及任何副产物杂质分离,然后将甲酯或乙酯与 C4 至 C14 醇进行酯交换反应以生产纯化芳香族酯。此外,还可采用沉淀、过滤和洗涤步骤来提纯羧酸、甲醇或乙醇和/或芳香族酯。