Mixed polymers for preventing scale caused by mineral processing water
US5080801A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1991 |
| Grant date | Jan 14, 1992 |
| Priority date | — |
| Expiry date | Apr 3, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F5/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method of preventing and inhibiting scale on solid surfaces in contact with mineral processing waters which comprises treating such waters with a scale preventing or inhibiting amount of a composition comprising: ______________________________________ Ingredients % By Weight ______________________________________ A. Polyacrylic acid 25-65 B. An acrylic acid lower alkyl acrylate ester 25-65 copolymer which contains from 1-6 carbon atoms in the alkyl group C. An acrylamide terpolymer which contains 0-30 from 1-80 mole % of acrylic acid and from 1-50 mole % of an alkyl sulfonate substituted acrylamide wherein the alkyl group contains from 1-6 carbon atoms ______________________________________ with polymers A, B, and C having a molecular weight range between 1,000 to 50,000.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.