Abstract 1. A PROCESS FOR FLOCCULATING SOLIDS FROM THEIR FINELY DIVIDED SUSPENSIONS IN AQUEOUS MEDIA WHICH COMPRISES INTRODUCING INTO THE SUSPENSION A GRAFT COPOLYMER PREPARED BY (1) CONTACTING OXYGEN WITH A WATER-DIPERSIBLE POLYMERIC SUBSTRATE SELECTED FROM THE GROUP CONSISTING OF STARCH, CASEIN, ALGIN, DEXTRAN, DEXTRIN, POLYVINYL ALCOHOL AND A POLYMERIC CONDENSATE OF A 2 TO 3 CARBON ALKYLENE OXIDE, IRRADIATED WITH HIGH ENERGY INOIZING RADIATION TO A DOSAGE OF FROM 0.1 TO 30 MEGARADS WHEREBY HYDROPEROXIDE GROUPS ARE INTRODUCED INTO SAID POLYMERS AND (2) SUBSEQUENTLY CONTACTING THE PEROXIDIZED POLYMERIC SUBSTRATE WITH AN AQUEOUS DISPERSION OF A VINYL MONOMER CAPABLE OF FREE RADICAL INDUCED POLYMERIZATION IN THE PRESENCE OF DISSOLVED CATALYST CAPABLE OF PRODUCING FREE RADICALS BY REACTION WITH HYDROPEROXIDES.
A PROCESS FOR FLOCCULATING SOLIDS FROM THEIR FINELY DIVIDED SUSPENSIONS IN AQUEOUS MEDIA WHICH COMPRISES INTRODUCING INTO THE SUSPENSION A GRAFT COPOLYMER PREPARED BY (1) CONTACTING OXYGEN WITH A WATER-DIPERSIBLE POLYMERIC SUBSTRATE SELECTED FROM THE GROUP CONSISTING OF STARCH, CASEIN, ALGIN, DEXTRAN, DEXTRIN, POLYVINYL ALCOHOL AND A POLYMERIC CONDENSATE OF A 2 TO 3 CARBON ALKYLENE OXIDE, IRRADIATED WITH HIGH ENERGY INOIZING RADIATION TO A DOSAGE OF FROM 0.1 TO 30 MEGARADS WHEREBY HYDROPEROXIDE GROUPS ARE INTRODUCED INTO SAID POLYMERS AND (2) SUBSEQUENTLY CONTACTING THE PEROXIDIZED POLYMERIC SUBSTRATE WITH AN AQUEOUS DISPERSION OF A VINYL MONOMER CAPABLE OF FREE RADICAL INDUCED POLYMERIZATION IN THE PRESENCE OF DISSOLVED CATALYST CAPABLE OF PRODUCING FREE RADICALS BY REACTION WITH HYDROPEROXIDES.
Claim 2
Dependent Claim
117 words
A PROCESS FOR FLOCCULATING SOLIDS FROM THEIR FINELY DIVIDED SUSPENSIONS IN AQUEOUS MEDIA WHICH COMPRISES INTRODUCING INTO THE SUSPENSION A GRAFT COPOLYMER PREPARED BY (1) CONTACTING OXYGEN WITH A WATER-DIPERSIBLE POLYMERIC SUBSTRATE SELECTED FROM THE GROUP CONSISTING OF STARCH, CASEIN, ALGIN, DEXTRAN, DEXTRIN, POLYVINYL ALCOHOL AND A POLYMERIC CONDENSATE OF A 2 TO 3 CARBON ALKYLENE OXIDE, IRRADIATED WITH HIGH ENERGY INOIZING RADIATION TO A DOSAGE OF FROM 0.1 TO 30 MEGARADS WHEREBY HYDROPEROXIDE GROUPS ARE INTRODUCED INTO SAID POLYMERS AND (2) SUBSEQUENTLY CONTACTING THE PEROXIDIZED POLYMERIC SUBSTRATE WITH AN AQUEOUS DISPERSION OF A VINYL MONOMER CAPABLE OF FREE RADICAL INDUCED POLYMERIZATION IN THE PRESENCE OF DISSOLVED CATALYST CAPABLE OF PRODUCING FREE RADICALS BY REACTION WITH HYDROPEROXIDES.