N-chlorosulfamate compositions having enhanced antimicrobial efficacy
US6471974B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1999 |
| Grant date | Oct 29, 2002 |
| Priority date | — |
| Expiry date | Jun 29, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01N59/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The antimicrobial efficacy of N-chlorosulfamate solutions, namely buffered aqueous combinations of HClNSO3−(mono-N-chlorosulfamate) and Cl2NSO3 (di-N-chlorosulfamate), herein referred to as “stabilized hypochlorite”, can be markedly enhanced by the addition of certain organic dopants. The dopants themselves are select hypochlorite stabilizing agents, which are known to readily form stable organochloramides when reacted with “free” hypochlorite (HOCl or NaOCl). Highly effective antimicrobial enhancing dopants include 5,5-dialkyl hydantoins, arylsulfonamides, and succinimides. Examples of these include 5,5-dimethylhydantoin, benzenesulfonamide, and succinimide. Other, less effective dopants include glycolurils. Generally, the dopant is present in a minor mole fraction, relative to the molar amount of stabilized hypochlorite present in the enhanced antimicrobial solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.