ENVIRONMENT SAFE POLYELECTROLYTES AND THEIR USING AS COAGULANTS Russian patent published in 2008 - IPC C08F220/56 C08F220/06 C02F1/56

Abstract RU 2321599 C2

FIELD: chemistry of polymers.

SUBSTANCE: invention describes polyelectrolytes synthesized by polymerization of (meth)acrylamide monomers quaternized (meth)acrylamide derivative, (meth)acrylic acid derivative and/or cationic monomers resistant to hydrolysis. Composition of polyelectrolytes is characterized by the following toxicity index: F_i = (Q_tr-2Q_ME)/10≤1 wherein Q_tr is a general polymer charge; Q_ME is part of monomer charge of ester type. Proposed polyelectrolytes are used for dehydration of cleared slimes, sewage treatment, preparing drinking water or for producing paper or cardboard.

EFFECT: valuable properties of polyelectrolytes.

15 cl, 4 tbl, 12 ex

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RU 2 321 599 C2

Authors

Shtajner Norbert

Khert Gregor

Fisher Verner

Redlof Khorst

Dates

2008-04-10—Published

2003-07-30—Filed