Calcium hypochlorite compositions
US8257748B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2009 |
| Grant date | Sep 4, 2012 |
| Priority date | — |
| Expiry date | May 11, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01N59/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Described are compositions containing a mixture of (a) particulate calcium hypochlorite and (b) an amount of aluminum hydroxide that is sufficient to increase the UN-burn time of the composition by a factor of at least 2.5 compared to that of the calcium hypochlorite, the composition having an available chlorine content of at least 35 weight percent. Further described are solid compositions of (a) granular calcium hypochlorite having a UN Packing Group oxidizer classification of II, and (b) an amount of aluminum hydroxide such that the composition is classified as a Packing Group III Division 5.1 oxidizer or as a non-Division 5.1 oxidizer, the composition having an available chlorine content of at least 40 weight percent. Further described are formed articles prepared from the above-described compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.