Water-in-oil emulsion spray drying process

C - Chemistry – Metallurgy – 08 – J

Patent

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C08J 3/12 (2006.01) C08L 57/00 (2006.01)

Patent

CA 2258756

Processes for spray-drying water-soluble and water-swellable vinyl-addition polymer-containing dispersions, emulsions and microemulsions to obtain substantially dry water-soluble or water-swellable polymer particles, compositions of substantially dry water-soluble or water-swellable polymer particles, methods of agglomerating spray-dried polymer particles, and methods of using spray-dried polymer particles and agglomerates in water-treating, mining, paper, food processing, soil conditioning, solution thickening, biotechnological, and oil recovery applications are disclosed.

Procédés pour sécher par pulvérisation des dispersions, émulsions et micro-émulsions solubles et gonflant dans l'eau contenant des polymères additionnés de vinyle pour obtenir des particules polymères solubles et gonflant dans l'eau, sensiblement sèches. Compositions de particules polymères solubles ou gonflant dans l'eau, sensiblement sèches, méthodes pour agglomérer ces particules polymères séchées par pulvérisation et méthodes pour utiliser ces particules et agglomérats dans des applications comprenant le traitement des eaux, l'exploitation minière, la fabrication de papier et de produits alimentaires, l'assainissement des sols, l'épaississement de solutions, ainsi que les méthodes biotechnologiques et l'exploitation pétrolière.

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