Alkyl-allylphosphonate copolymer used for boiler water treatment
US5512183A · kind A · utility
4Cited by
9References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 7, 1994 |
| Grant date | Apr 30, 1996 |
| Priority date | — |
| Expiry date | Dec 7, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F5/14
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A water soluble isopropenylphosphonic acid copolymer composition and method of use thereof are disclosed. The copolymer comprises repeat units (a) of the formula: ##STR1## wherein X=OH or OM, wherein M is a cation, and repeat units (b) of the formula: ##STR2## wherein R.sub.1 and R.sub.2 are independently hydrogen, C.sub.1-10 linear or branched alkyl, phenyl or alkyl substituted phenyl. The copolymers are effective in inhibiting the precipitation of scale forming salts and also act to inhibit corrosion in boiler water systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.