Anionic high molecular flocculants
Abstract
Abstract 1. A PROCESS FOR THE PREPARATION OF A HIGH MOLECULAR FLUOCCULANT WITH A MOLECULAR WEIGHT GREATER THAN 1,000,000 DETERMINED BY MEASUREMENT OF VISCOSITY OF AN AQUEOUS SOLUTION CONTAINING AN EXCESS OF NEUTRAL SLATS WHICH COMPRISES POLYMERIZING 55 TO 95 WEIGHT PERCENT OF AT LEAST ONE (I) OF ACRYLIC OR METHACRYLIC ACIDS AND 45 TO 5 WEIGHT PERCENT OF AT LEAST ONE (II) OF MONOMERS REPRESENTED BY THE FORMULA H2C=C(-R1)-R2 WHEREIN R1 IS A HYDROGEN OR METHYL AND R2 IS -COOR3 RADICAL WHEREIN R3 IS ALKYL, ARYL OR ALKYLARYL GROUPS OR -CN RADICAL IN WATER MEDIUM WITH STIRRING TO PRODUCE A SUSPENSION OF A COPOLYMER WHICH IS INSOLUBLE UNDER THE POLYMERIZATION CONDITIONS BUT SOLUBLE IN NEUTRAL OR ALKALINE WATER, ADDING SAID SUSPENSION INTO AT LEAST ONE OF HYDROXIDES OF AN ALKALI METAL OR AMMONIA DISSOLVED IN AT LEAST ONE OF ALCOHOLS OF C1 TO C6 OR A WATER-CONTAINING ALCOLHOL WITH STIRRING THEREBY OBTAINING AN ALCOHOL SUSPENSION OF A WATER-SOLUBLE COPOLYMER WITH ITS CARBOXYL GROUP BEING COMPLETELY OR PARTIALLY NEUTRALIZED, AND THEN REMOVING THE COPOLYMER IN FORM OF PARTICLES FOLLOWED BY DRYING.
Inventors
- 👤 S Korenaga
- 👤 F Ide
- 👤 Y Kotake
Bibliographic Details
Claims Analysis
Total Claims: 2References Cited (Backward Citations)
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