Compositions containing heterocyclic corrosion inhibitors
US4696763A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 1985 |
| Grant date | Sep 29, 1987 |
| Priority date | — |
| Expiry date | May 3, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23F11/165
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
New anticorrosive compositions comprise: PA0 (A) an applicational medium selected from (a) surface coatings and (b) wholly or partly aqueous non-coating media, PA0 (B) as corrosion inhibitor, an effective corrosion-inhibiting amount of at least one aliphatic or cycloaliphatic mono-, di-, tri- or tetra-carboxylic acid ester or anhydride which is substituted in the aliphatic or cycloaliphatic residue by one or more groups having the formula ##STR1## in which X is oxygen, sulphur or NH; and each R, independently, is hydrogen, alkyl, haloalkyl, alkoxy, alkylthio, alkylsulphonyl, cycloalkyl, phenyl, alkylphenyl, phenylalkyl, halogen, cyano, nitro, hydroxy, --COOH, --COOalkyl or a primary-, secondary- or tertiary amino- or carbamoyl group; or a non-toxic base addition salts of those components (B) which contain free carboxyl group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.