Hydrolysis of chlorosilanes

Details Hydrolysis of chlorosilanes Hydrolysis of chlorosilanes

2007-04-24

2007-04-24

Puttlitz, Karl (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

C556S452000, C556S460000

Reexamination Certificate

active

10958768

ABSTRACT:
Chlorosilanes are hydrolyzed to a hydrolysate in a looped system containing a hydrolysis reactor, an HCl purifier, a wash means, and a separator. The steps of the method comprise:(i) feeding chlorosilanes from an external source to the hydrolysis reactor,(ii) feeding water from an external source to the wash means,(iii) feeding a high concentration aqueous HCl of at least 10 percent by weight HCl from an external source to the hydrolysis reactor between the wash means and the hydrolysis reactor,(iv) removing anhydrous hydrogen chloride from the HCl purifier,(v) removing hydrolysate from the wash means, and(vi) removing a low concentration aqueous hydrogen chloride of 0.1 to less than 10 percent by weight HCl from the looped system.

REFERENCES:
patent: 4382145 (1983-05-01), Yeboah

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