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:
Sep. 04, 2001
Filed:
Apr. 28, 1999
Robert D. Kross, Bellmore, NY (US);
Other;
Abstract
The present invention is directed to both physical and chemical means for maintaining continuous high levels of chlorine dioxide in aqueous solutions for extended periods, with minimum loss through degradation in the solution and dissipation through the walls of the containing vessel within which the solution is stored. The ClO,may be maintained even in the absence of very high levels of chlorite, from which supplemental, offsetting levels of ClO,may be generated. The present invention relates to the discovery that certain types of plastic and glass containers have the ability to maintain relatively constant levels of ClO,in their contained solutions over extended periods, particularly in aqueous compositions comprising chlorite/ClO,ratios sufficient for a stabilizing complex of the two, presumably Cl,0,, to suppress the ClO,loss. Of particular value is certain high-density polyethylene terephthalate (PETE) plastic bottling and plastic containers which have been initially exposed to a fluorinating environment. Specifically, in the latter regard, it has been discovered that certain plastic containers which ordinarily are incapable of maintaining aqueous ClO,levels can be treated with fluorine gas to transform their surfaces so as to effectively suppress ClO,diffusion therethrough.