Method for manufacturing grafted polyacrylamide flocculant of ca

Details Method for manufacturing grafted polyacrylamide flocculant of ca Method for manufacturing grafted polyacrylamide flocculant of ca

1997-07-18

1999-11-23

Buttner, David

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524317, 524424, 524846, 525 543, 525 5431, 527305, 527306, 527309, 527312, C08F25100, C08F25102

Patent

active

059902167

ABSTRACT:
The present invention discloses a process for manufacturing a grafted polyacrylamide flocculant of cationic/ampholytic ions, which is characterized by graft-copolymerizing starch or micro-crystalline cellulose as backbone with acrylamide, while using potassium permanganate as initiator, hydrolyzing and thereafter reacting with alkyl-amino-carbinol. Optionally, the product may also contain additives. It has advantages in readily available raw materials, low cost of production, simple technology and mild reaction conditions. The product has good overall performance, high flocculating ability, wide applicability and is an ideal sludge-dewatering agent and sewage treating agent.

REFERENCES:
Pan, "Study of Aminomethylation of Starch/Polyacrylamide", Shiyou Huagong 20(11), 1991 pp. 744-750.
Chemical Abstract 108:188748.
Chemical Abstract 116:256099.

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