Distillation: processes – separatory – Adding material to distilland except water or steam per se – Organic compound
Patent
1982-09-20
1983-10-25
Bascomb, Jr., Wilbur L.
Distillation: processes, separatory
Adding material to distilland except water or steam per se
Organic compound
203 71, 203 88, 556465, 556466, B01D 340, C07F 720
Patent
active
044117400
ABSTRACT:
A method for separating close-boiling chlorosilanes by the procedures of extractive distillation using sulfolane as the extractive solvent is described. An example of close-boiling chlorosilanes which can be separated by this method include dimethyldichlorosilane and methyltrichlorosilane containing mixtures. The invention comprises heating a mixture of the close-boiling chlorosilanes with sulfolane to distill the lower-boiling chlorosilane from the mixture and thereafter separating the sulfolane and the high-boiling chlorosilane.
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Flaningam Ora L.
Halm Roland L.
Bascomb, Jr. Wilbur L.
Dow Corning Corporation
Kaba Richard A.
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