| 摘要 |
Dicarboxylic acid esters, derived from alcohols with 7 to 10 carbon atoms, e.g. phthalate esters can be decolorized by a continuous process involving treatment with hydrogen in the presence of a catalyst comprising palladium on a carrier at a temperature from 100 to 175 DEG C and at a pressure from 5 to 35.5 bars (60 to 500 psig), preferably 14.8 to 28.6 bars (200 to 400 psig). |
