Method for corrosion and scale inhibition
US7803278B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2004 |
| Grant date | Sep 28, 2010 |
| Priority date | — |
| Expiry date | Mar 28, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S162/04
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention provides a formulation for use in the treatment of corrosion and metal sulphide scale deposits in aqueous systems, said formulation comprising a tetrakis (hydroxyorgano) phosphonium salt (THP+ salt) and a primary, secondary or tertiary alcohol having an acetylenic bond in the carbon backbone. The invention also provides the use of such a formulation for treating corrosion of mild steel, copper or aluminium, and a method for treatment of an aqueous system containing or in contact with a metal sulphide scale while concomitantly inhibiting the corrosion of surfaces in contact with said aqueous system, which method comprises the addition to said aqueous system of a scale and corrosion inhibiting amount of such a formulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.