Patent ID: 9085594
Filing Date: 2015-07-21
Classification: B01D,C07F

Abstract:
1. A method of continuously purifying an organometallic compound comprising: (a) providing a distillation apparatus comprising a first column and a second column, each column having an upper portion and a lower portion; (b) providing a crude organometallic compound to be purified to the first distillation column; (c) subjecting the organometallic compound in the first distillation column to conditions sufficient to remove relatively more volatile impurities from the upper portion of the first distillation column; (d) conveying the organometallic compound from the lower portion of the first distillation column to the second distillation column; and (e) subjecting the organometallic compound in the second distillation column to conditions sufficient to obtain purified organometallic compound from the upper portion of the second distillation column; wherein the first distillation column has a number of theoretical stripping stages sufficient to remove of the relatively more volatile impurities from the organometallic compound; wherein the second distillation column has a number of theoretical rectification stages sufficient to obtain purified organometallic compound; and wherein the obtained purified organic compound has a purity of ≧95%.