Patent Number: 6,884,911

Title: Material processing by repeated solvent expansion-contraction

Abstract: A method for repeatedly converting a solvent from a state of solvent to a state of antisolvent with relatively little loss of solvent. The method is used to allow for processing of large amounts of solute material with minimum amounts of solvent.

Inventors: Saim; Said (New Milford, CT), Horhota; Stephen (Brookfield, CT), Bochniak; David Joseph (Ridgefield, CT)

Assignee: Boehringer Ingelheim Pharmaceuticals, Inc.

International Classification: B01D 11/02 (20060101); B01D 9/00 (20060101); C07C 233/05 (); B01D 011/00 ()

Expiration Date: 04/26/2022