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:
Jul. 16, 2013
Filed:
Dec. 01, 2008
Mario Bergeron, Quebec, CA;
Alain Langlais, Quebec, CA;
Mario Bergeron, Quebec, CA;
Alain Langlais, Quebec, CA;
Institut National de la Recherche Scientifique, Quebec (Quebec), CA;
Abstract
A method is provided for producing GeClwith or without SiClfrom optical fibers, the method comprises the steps of: reacting comminuted optical fibers including germanium and optionally silicon oxides with a reagent including a solid carbonaceous reducing agent, chlorine and a boron compound to obtain a gaseous product including gaseous GeCl, gaseous SiCl, and gaseous BClin accordance with the reactions: 2BCl(g)+1.5GeO=1.5GeCl(g)+BO; 2BCl(g)+1.5SiO=1.5SiCl(g)+BO; BO+1.5C+3Cl=2BCl(g)+1.5CO; and then condensing the gaseous GeCl, BCland optionally SiClinto liquid GeCl, BCland optionally SiCl. The invention further provides a method for producing SiCl(and optionally GeCl) from glassy residues obtained from optical fiber manufacturing and wasted optical cables. The method includes the steps of: reacting comminuted glassy residues with a reagent including a solid carbonaceous reducing agent, a salt, a boron compound to obtain a gaseous product including SiCl, BCl, and optionally GeCl; and then condensing the gaseous SiCl4, BCl(with or without GeCl) into liquid SiCl, BCland GeCl. There is also provided a method for producing SiClfrom a SiOcontaining material.