| DEQUEST AG Patent applications |
| Patent application number | Title | Published |
|---|
| 20110133116 | METHOD OF WATER TREATMENT - A method for securing the use of an aqueous medium under any substantial exclusion of metal ion interference is disclosed. A phosphonic acid compound containing: a selected phosphonate moiety and a moiety selected from a limited number of species; or hydrocarbon chains containing aminoalkylene phosphonic acid substituents; or alkylamino alkylene phosphonic acids containing an active moiety embodying N, O, and S. The technology can, by way of illustration, be used in numerous applications including secondary oil recovery, scale inhibition, industrial water treatment, paper pulp bleaching, dispersant treatment, sequestering application, brightness reversion avoidance and paper pulp treatment. | 06-09-2011 |
| 20110130312 | METHOD OF SECONDARY OIL RECOVERY - A method of secondary oil recovery is disclosed wherein from 0.1 to 100 000 ppm of a medium soluble aminoalkylene phosphonic acid amine salt are used wherein both the aminoalkylene phosphonic acid moiety and the amine moiety are selected from a specifically defined class of compounds. The substantially medium soluble aminoalkylene amine phosphonates exhibit a significantly improved compatibility with the recovery medium and thus can propagate fairly freely into the medium and consequently cover a largely extended rock surface before being subject to precipitation in the form of a medium insoluble scale inhibitor. The amine compound is represented by combinations of structurally different compounds. | 06-02-2011 |
| 20110086791 | SURFACE TREATMENT COMPOSITION CONTAINING PHOSPHONIC ACID COMPOUNDS - Surface treatment compositions containing selected phosphonic acid compounds are disclosed. The compositions contain major levels of surface-active agents in combination with additive levels of the phosphonic acid compounds, and, in accordance with needs and objectives, conventional optional ingredients and additive agents. The inventive compositions can provide significant performance benefits, among others novel synergies and eminently desirable regulatory and environmental acceptability. | 04-14-2011 |
