Calcium hypochlorite composition
US7857990B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2007 |
| Grant date | Dec 28, 2010 |
| Priority date | — |
| Expiry date | Jan 17, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2305/14
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Describes a composition comprising a mixture of (1) a major amount of calcium hypochlorite, e.g., hydrated calcium hypochlorite, and (2) a minor amount of calcium hypochlorite-compatible hydrophobic additive (other than discrete particulate Group IIA or IIIA metal stearates) in amounts sufficient to provide the composition with reduced hydrophilic properties. The composition has a solution rate in water at standard conditions that is less than the calcium hypochlorite used to prepare the composition, but sufficient for the intended application. Describes also calcium hypochlorite compositions in which the hydrophobic additive is an organo-silicon material, or a metal oxide, e.g., amorphous precipitated silica, treated with a hydrophobizing agent, such as an organo-silicon material, e.g., an organo-silane and/or organo-siloxane material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.