Alkaline earth metal salts, transition metal salts and transition metal complexes of ketocarboxylic acids as corrosion inhibitors
US5458678A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1994 |
| Grant date | Oct 17, 1995 |
| Priority date | — |
| Expiry date | Apr 4, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D5/086
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
There are described novel alkaline earth metal salts, transition metal salts and transition metal complexes of compounds of the formula I ##STR1## in which R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are, independently of one another, hydrogen, halogen, nitro, cyano, CF.sub.3, C.sub.1 -C.sub.15 alkyl, C.sub.5 -C.sub.12 cycloalkyl, C.sub.2 -C.sub.15 alkenyl, C.sub.1 -C.sub.12 haloalkyl, C.sub.1 -C.sub.12 alkoxy, C.sub.1 -C.sub.12 alkylthio, C.sub.6 -C.sub.10 aryl which is unsubstituted or substituted by C.sub.1 -C.sub.4 alkyl; C.sub.6 -C.sub.10 aryloxy which is unsubstituted or substituted by C.sub.1 -C.sub.4 alkyl; C.sub.7 -C.sub.12 arylalkyl which is unsubstituted or substituted on the aryl radical by from 1 to 3 C.sub.1 -C.sub.4 alkyl groups; --CO.sub.2 R.sub.6, --COR.sub.6 or ##STR2## where at least one of the radicals R.sub.1 to R.sub.5 is hydrogen, halogen or C.sub.1 -C.sub.15 alkyl, in addition the radicals R.sub.1 and R.sub.2, R2 and R.sub.3, R.sub.3 and R.sub.4 or R.sub.4 and R.sub.5 form, together with the carbon atoms to which they are bound, a benzo or cyclohexenyl ring, R.sub.6 is C.sub.1 -C.sub.20 alkyl, C.sub.2 -C.sub.20 alkyl interrupted by oxygen, sulfur or >N--R…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.