Biocidal composition containing phosphite ions
US6720313B1 · kind B1 · utility
5Cited by
7References
41Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 17, 2000 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Oct 22, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB27K3/50
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A biocidal composition useful for providing antifungal or antibacterial protection to a substrate such as wood, the composition comprises in its use form a use solution of pH of 4 or below containing at least one biocide and a source of free phosphite ions.A preferred source of phosphite ions is phosphorous acid.The composition allows deep penetration of a biocide such as copper oxine into where it can be fixed by pH change and confer a degree of protection beyond that hitherto obtained with such a biocide simply applied to the surface of the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.