Massive bodies containing free halogen source for producing highly converted solutions of chlorine dioxide
US8262929B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2011 |
| Grant date | Sep 11, 2012 |
| Priority date | — |
| Expiry date | Mar 5, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01N59/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A massive body, e.g., a tablet, for producing a thickened solution of chlorine dioxide when the massive body is added to liquid water is disclosed. The massive body comprises a metal chlorite, an acid source and a thickener (incorporated directly into the massive body or added as a component separate from the massive body) and optionally a source of free halogen. The concentration of free chlorine in the solution will be: (a) less than the concentration of chlorine dioxide in said solution on a weight basis and the ratio of the concentration of chlorine dioxide to the sum of the concentrations of chlorine dioxide and chlorite anion in said solution is at least 0.25:1 by weight; or (b) equal to or greater than the concentration of chlorine dioxide in said solution on a weight basis and the ratio of the concentration of chlorine dioxide to the sum of the concentrations of chlorine dioxide and chlorite anion in said solution is at least 0.50:1 by weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.