Protective material for preventing microbiologically-influenced corrosion in buried conduits
US6183825A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 30, 1998 |
| Grant date | Feb 6, 2001 |
| Priority date | — |
| Expiry date | Dec 30, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An anti-corrosive material used to protect buried conduits from microbiologically-influenced corrosion, or "MIC". The material preferably comprises a low, medium, or high density polyethylene sleeve having a bactericide impregnated therein such that said bactericide can migrate within the polymer matrix to contact the conduit surface and thereby prevent MIC therein. The material may further comprise a barrier layer of high density polyethylene between the bactericide-containing layer and the environment. The bactericide is able to migrate through the low or medium density polyethylene but the rate of migration of the bactericide is considerably slowed through the high density polyethylene. Thus, the bactericide is substantially prevented from entering the surrounding environment, but rather, is trapped within a "protection zone" adjacent the conduit surface to provide extended protection against microbiologically-influenced corrosion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.