Method for calcium oxalate scale control
US4872995A · kind A · utility
28Cited by
15References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1988 |
| Grant date | Oct 10, 1989 |
| Priority date | — |
| Expiry date | Jun 6, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F5/125
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Methods of controlling the formation of calcium oxalate in aqueous systems are disclosed. The methods comprise adding from about 0.1 to 500 ppm of a water soluble (meth)acrylic acid/allyl ether copolymer to the desired water system. The methods are especially well adapted for use in pulping and paper making systems wherein calcium oxalate is often encountered as a troublesome scale forming compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.