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US7678388: Method of treating with chlorine dioxide

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Filing Information

Inventor(s) John Y. Mason ·
Assignee(s) None listed in document.
Attorney/Agent(s) Heslin Rothenberg Farley & Mesiti P.C. ·
Primary Examiner Ernst V Arnold ·
Application Number US11131021
Filing date 05/16/2005
Issue date 03/16/2010
Prior Publication Data
Predicted expiration date 06/03/2027
Patent term adjustment 748
U.S. Classifications 424/661  · 423/477  · 422/122  · 422/120  ·
International Classifications A01N5908  · A61K3314  · A62B700  · C02B1102  ·
Kind CodeB2
Related U.S. Application DataCROSS-REFERENCE TO RELATED APPLICATIONS
This application claims benefit of U.S. Provisional Patent Application No. 60/572,205, filed May 17, 2004.
24 Claims, No Drawings


Abstract

An aqueous chlorine dioxide solution which comprises dissolved chlorine dioxide in a concentration of about 10 to 3000 mg/l, pH in the range of about 1 to 6, and a chlorine scavenging means such as sodium chlorite in a ratio in the range of about 1:4 to 1:15 (w/w) sodium chlorite to chlorine dioxide. The chlorine dioxide solution may be stored for use over a period of several days to several months.

Independent Claims | See all claims (24)

  1. 1. An aqueous solution of chlorine dioxide that remains stable for two or more days, comprising: a) dissolved chlorine dioxide, and b) chlorine scavenging means for converting dissolved chlorine to chlorine dioxide, said aqueous solution being prepared to initially have: i) a chlorine dioxide concentration in the range of about 1000 to 3000 mg/l, ii) a pH in the range of 1 to 6, and iii) a ratio of chlorine scavenging means:chlorine dioxide in the range of about 1:4 to 1:15 (w/w) based on a sodium chlorite to chlorine dioxide system.
  2. 12. An aqueous solution of chlorine dioxide comprising: a) dissolved chlorine dioxide, and b) chlorine scavenging means for convening dissolved chlorine to chlorine dioxide, said aqueous solution being prepared to initially have: i) a chlorine dioxide concentration in the range of about 2000 to 3000 mg/l, ii) a pH in the range of about 5 to 6, and iii) a ratio of chlorine scavenging means:chlorine dioxide in the range of about 1:10 to 1:15 (w/w), and wherein the pH and ratio of the initially prepared aqueous solution are selected so that the chlorine dioxide concentration in the aqueous solution may be maintained at normal atmospheric pressure over a storage period in the range of at least 2 to 90 days with less than 10% loss in concentration of the chlorine dioxide.

References Cited

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Foreign Patent Documents

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