Nonionic polymers for the treatment of boiler water
US5527468A · kind A · utility
13Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1994 |
| Grant date | Jun 18, 1996 |
| Priority date | — |
| Expiry date | Dec 20, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F5/10
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A treatment for controlling the deposition of scale imparting species on the structural surfaces of steam generating systems, wherein the aqueous medium is maintained at a pH which minimizes magnetite solubility, comprising the use of a combination of an organic amine and a nonionic polymer having the structure: ##STR1## wherein R.sub.1 is H or lower (C.sub.1 -C.sub.4) alkyl, R.sub.2 is (CH.sub.2 --CH.sub.2 --O).sub.n, ##STR2## or a mixture of both, n is an integer of from 1 to about 40, and R.sub.3 is H, lower (C.sub.1 -C.sub.4) alkyl or an acetate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.