Zinc stabilization with modified acrylamide based polymers and corrosion inhibition derived therefrom
US4898686A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1987 |
| Grant date | Feb 6, 1990 |
| Priority date | — |
| Expiry date | Apr 27, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23F14/02
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
New zinc stabilizing polymers containing at least 5 mole percent of a monomer represented by the structure: ##STR1## wherein: R is independently, at each occurrence, chosen from H and lower (C.sub.1 -C.sub.4) alkyl groups; R' is a hydrocarbonaceous bridging group containing from 1-12 carbon atoms; X is chosen from --SO.sub.3 M, --OH, --COOM groups or mixtures thereof, M is hydrogen or some other cation species; and n ranges from 1-10, are described. Also, the use of these polymers in combination with zinc salts, and in further combination with phosphate salts, to inhibit corrosion of iron containing metals, and other metals, when these metals are exposed to industrial waters is demonstrated. Deposit control or scale inhibition on these metals exposed to industrial waters is also observed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.