Corrosion protection of steel pipes
US4421569A · kind A · utility
34Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 7, 1982 |
| Grant date | Dec 20, 1983 |
| Priority date | — |
| Expiry date | May 7, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S138/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Polymeric coatings are provided on steel pipes to protect the same against corrosion. Monomers and prepolymers are permanently adhered to the surface of steel pipes by graft polymerization to form a barrier which keeps out moisture, oxygen and other corrosive gases from the steel substrate. The monomers and prepolymers are chosen to provide a low moisture vapor transmission rate and oxygen permeability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.