The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 08, 2004
Filed:
Sep. 01, 2000
Andrew Joseph Paszkowski, Kennesaw, GA (US);
Chemical Products Corporation, Cartersville, GA (US);
Abstract
A system and method are disclosed for producing high purity colloidal silica by the steps of providing a quantity of potassium silicate; subjecting the quantity of potassium silicate to an ion exchange process to remove a first portion of potassium therefrom to produce a quantity of colloidal silica; and subjecting the quantity of colloidal silica to ultrafiltration to remove a portion of sodium therefrom, producing a quantity of high purity colloidal silica. High purity potassium hydroxide may also be prepared by regenerating the ion exchange resin with an acid to produce a quantity of potassium salt, which may be further purified by evaporation, crystallization, then further processed by electrodialysis and/or electrolysis.