Dadmac/vinyl trialkoxysilane copolymers and their use in...

C - Chemistry – Metallurgy – 08 – F

Patent

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Details

C08F 230/08 (2006.01) B01D 17/00 (2006.01) B01D 17/04 (2006.01) B01D 21/00 (2006.01) C02F 1/54 (2006.01) C02F 1/56 (2006.01) C02F 9/00 (2006.01) C08F 220/02 (2006.01) C08F 226/02 (2006.01) D21C 5/02 (2006.01) D21C 9/08 (2006.01) D21H 21/02 (2006.01)

Patent

CA 2194295

The invention is a water-soluble, surface active silicon-containing polyelectrolyte polymer and its use as coagulants for the control of pitch in pulp and paper mills; in clarifying ink-containing effluent water from recycled paper production; for removing color from a paper mill waste effluent containing color-bodies; for clarifying wastewater containing turbidity- causing components; for a chemical treatment method that effectively removes fat, blood, tissue and other solids from food processing waste and for removing waste oil from industrial oily wastewater. These polyelectrolyte polymers are silicon containing copolymers of specific hydrophilic or hydrophobic monomers, preferably diallyl dimethyl ammonium halides, particularly diallyl dimethyl ammonium chloride and vinyl alkoxysilanes, preferably vinyl trimethoxysilane.

L'invention concerne un polymère polyélectrolytique hydrosoluble, tensioactif et contenant du silicium et son utilisation comme coagulant pour l'élimination des goudrons dans les fabriques de pâte à papier et de papier; pour clarifier des effluents aqueux contenant des encres dans les fabriques de recyclage du papier; pour éliminer les matières colorantes dans les effluents aqueux de fabriques à papier; pour clarifier les effluents aqueux contenant des composés provoquant une turbidité de l'eau; comme traitement chimique pour éliminer efficacement les matières grasses, le sang, les tissus et d'autres matières solides d'effluents aqueux de l'industrie agroalimentaire; et pour éliminer les huiles de rejets aqueux industriels contenant de telles huiles. Ces polymères polyélectrolytiques sont des copolymères contenant du silicium et ils sont constitués de monomères hydrophiles ou hydrophobes particuliers, de préférence d'un halogénure de diallyldiméthylammonium (en particulier le chlorure de diallyldiméthylammonium) et d'un viny alcoxysilane (en particulier le vinyltriméthoxysilane).

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