Controlled partially cross-linked 3,3-ionenes

Details Controlled partially cross-linked 3,3-ionenes Controlled partially cross-linked 3,3-ionenes

1976-06-07

1978-01-31

Anderson, Harold D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 2EN, 260 37N, 2605676P, 424 78, C08G 7302

Patent

active

040714780

ABSTRACT:
The invention disclosed herein relates to novel partially cross-linked, fully quaternized poly-[(methylimino)trimethylene] polymers wherein a minor proportion (1% to 20%) of the nitrogen atoms in adjacent poly-[(methylimino)trimethylene] linear chains are, by quaternization, joined through trimethylene or 2-hydroxy-trimethylene bridges, the non-cross-linked nitrogens in the said linear chains being fully quaternized with lower alkyl or trialkylammoniopropyl groupings; and to the novel process for preparing these partially cross-linked, fully quaternized polymers which comprises reacting poly-[(methylimino)trimethylene] with 0.01 to 0.2 equivalents of 1,3-dihalo-propane or 1,3-dihalo-2-hydroxypropane per equivalent of tertiary amine in said poly-[(methylimino)trimethylene], and subsequently reacting the resulting product with excess alkyl halide or 3-halopropyltrialkylammonium halide. These partially cross-linked fully quaternized poly-[(methylimino) trimethylene] polymers are useful as highly-efficient bile acid sequestrants.

REFERENCES:
patent: 2884057 (1959-04-01), Wilson et al.
patent: 3778476 (1973-12-01), Rembaum et al.
patent: 3784649 (1974-01-01), Buckman et al.

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