Quaternary polyalkylene imine containing 2-hydroxypropyltrimethyl ammonium salt pendent side chain groups
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United States of America Patent
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Aug 12, 1986
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N/A
app pub date -
Feb 25, 1985
filing date -
Feb 25, 1985
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Expired
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Abstract
Polyalkylene imines containing 2-hydroxypropyltrimethylammonium salt side chains are obtained by reaction between alkylene imine polymers and copolymers and a glycidyltrimethylammonium salt. These polymers are very effective flocculants, particularly in the area of water clarification. They are obtained from a variety of sources, e.g. by modification of either commercial polyethylene imines or polymers derived from oxazolines, and oxazinolines, from the polymerization of aziridine monomers or from the condensation of a low molecular weight polyamine and a dihaloalkane.
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