Method of disinfecting a water system with a dry oxidizer composition
US5338461A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 24, 1992 |
| Grant date | Aug 16, 1994 |
| Priority date | — |
| Expiry date | Sep 24, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2103/42
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Disclosed is a method of disinfecting a water system with a blue pigmented dry oxidizer composition consisting of: (a) from 99.5-99.99% by weight of one of the following compositions: PA2 (i) 1,3 dichloro-5,5-dimethylhydantoin; PA2 (ii) a mixture of the 1-Bromo-3-chloro 5,5-dimethylhydantoin and 1,3-dichloro 5,5-dimethylhydantoin and 1,3-dichloro-5, ethyl-5-methylhydantoin; PA2 (iii) trichloro-s-triazinetrione; PA2 (iv) sodium dichloro-s-triazinetrione; PA2 (v) a mixture of trichloro-s-triazinetrione and sodium bromide; PA2 (vi) a mixture of sodium dichloro-s-triazinetrione and sodium bromide; PA2 (vii) 1-bromo-3-chloro-5,5-dimethylhydantoin; PA2 (viii) a mixture of 1,3-dichloro-5,5-dimethylhydantoin and potassium bromide; PA2 (ix) calcium hypochlorite PA2 (x) lithium hypochlorite PA1 (b) and from 0.01-0.5% by weight of lazurite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.