Resolution of emulsions formed in the production of pharmaceutic

Details Resolution of emulsions formed in the production of pharmaceutic Resolution of emulsions formed in the production of pharmaceutic

1989-12-04

1991-05-07

Hruskoci, Peter

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210734, 210735, 210736, 252344, 252345, 424123, 435 43, B01D 1705

Patent

active

050134523

ABSTRACT:
A method for resolving emulsions produced in preparation of pharmaceuticals by fermentation and in other such bioprocesses is disclosed. The method comprises adding an effective amount of a demulsifier to an emulsion containing fermentation product that includes a pharmaceutical which is desired to be extracted from the emulsion. The demulsifier comprises a nitrogen composition that is selected from among certain quaternized and unquaternized polyoxyalkylated amines, their conjugate acid salts, quaternized and unquaternized condensation product formed by heating an oxyalkylated amine under dehydration condensation conditions to product a polyoxyalkylated amine of molecular weight of at least 400, conjugate acid salts thereof, quaternized and unquaternized copolymers of an epihalohydrin and an amine selected from the group consisting of lower aliphatic primary amines having from two to about eight carbon atoms and lower aliphatic secondary amines having from two to about eight carbon atoms, polydialkyldiallyl ammonium salts, polymers of acrolamido alkylene quaternary ammonium salts, and mixtures thereof.

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