Polymeric agents and compositions for inhibiting corrosion
AssigneeThe Boeing Company
InventorsJames Ivan Mardel, Ivan Stewart Cole, Paul Andrew White, Anthony Ewart Hughes, Tracey Anne Markley, Timothy Graham Harvey, Joseph Osborne, Erik Sapper
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Abstract
The present disclosure is directed to processes, compositions and agents for inhibiting corrosion in various substrates, for example metal substrates. The present disclosure is also directed to corrosion inhibitors comprising organometallic polymers such as metal-organic frameworks (MOFs), including compositions and processes comprising MOFs for inhibiting corrosion in metal substrates.
Claims20
A composition comprising a corrosion inhibitor-containing a metal organic framework (MOF), wherein:
- the MOF comprises a plurality of metal ions or a plurality of metal clusters,
- the metal ions or the metal clusters are coordinated to one or more organic ligands to form one or more one-, two- or three-dimensional networks,
- the one or more organic ligands are selected from the group consisting of aryl, heteroaryl, heterocyclic compounds, and combinations thereof, and
- each of the aryl, heteroaryl, or heterocyclic compounds comprises at least one exocyclic sulphur group, and a ratio of organic ligand:metal is 2:1 or greater with respect to the organic ligand.
A process for preparing a composition comprising:
- forming a composition by admixing a film-forming organic polymer and a corrosion inhibitor-containing metal organic framework (MOF),
- wherein the MOF comprises a plurality of metal ions or a plurality of metal clusters coordinated to one or more organic ligands to form a one-, two- or three-dimensional network, and wherein the one or more organic ligands are independently selected from the group consisting of aryl, heteroaryl or heterocyclic compounds, wherein the aryl, heteroaryl or heterocyclic compound(s) comprise at least one exocyclic sulphur group.
A coated substrate comprising:
- a substrate coated with a corrosion inhibiting composition comprising a corrosion inhibitor-containing metal organic framework (MOF),
- wherein the MOF comprises a plurality of metal ions or a plurality of metal clusters each coordinated to one or more organic ligands to form a one-, two- or three dimensional network, and wherein the one or more organic ligands are independently selected from the group consisting of aryl, heteroaryl, or heterocyclic compounds, wherein the aryl, heteroaryl, or heterocyclic compound(s) comprise at least one exocyclic sulphur group, and a ratio of organic ligand:metal is 2:1 or greater.
Dependencies are inferred from the claim text.