High standard viscosity quaternary mannich microemulsions

Details High standard viscosity quaternary mannich microemulsions High standard viscosity quaternary mannich microemulsions

Category

C - Chemistry, Metallurgy

Subcategory

08

Subsubcategory

F

IPC codes

C08F 8/44 (2006.01) C02F 1/56 (2006.01) C08F 8/32 (2006.01)

Type

Patent

Patent number

CA 2217294

Description

Inverse microemulsions are disclosed wherein the dispersed micelles containing water and an (alk)acrylamide-based polymer substituted with at least one mole percent of quaternized tertiary aminomethyl groups i.e. the aqueous phase, contain from about 20 percent to about 40 percent, by weight, of polymer solids and the microemulsion has a Standard Viscosity of at least about 3.3 cps. A method of making said microemulsions and use thereof to dewater dispersions of suspended solids are also taught.

Micro-émulsions inverses dans lesquelles les micelles dispersées contenant de l'eau et un polymère à base d'(alk)acrylamide substitué avec au moins un pour cent en moles de groupes aminométhyle tertiaires quaternarisés, c'est-à-dire la phase aqueuse, contiennent entre 20 pour cent environ et 40 pour cent environ, en poids, de polymères solides, et la micro-émulsion a une viscosité normalisée d'au moins 3,3 cps environ. Sont également décrits un procédé de fabrication de ces micro-émulsions et l'utilisation de ces substances pour déshydrater des dispersions de solides en suspension.

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