Recovery of carboxylic acids from oxo residues

Recovery of chemical components of cellulosic regenerating solut

Recovery of isoprene from a C.sub.5 -hydrocarbon mixture

Recovery of metal chlorides from their complexes by molten salt

Recovery of products from toluenediisocyanate residues

Refining tetrahydrofuran

Removal of aldehydes from .alpha., .beta.-olefinically unsaturat

Removal of chloroprenes from ethylene dichloride

Removal of cyanides from acetonitrile

Removal of iodine or iodide impurities

Removal of iodine or ioidide impurities

Removal of trace aldehydes from carboxylic acids

Selective hydrogenation of vinyltoluene

Separation of a C.sub.4 -hydrocarbon mixture essentially contain

Separation of aliphatic diacids from adipic acid admixtures ther

Separation of heteropoly compounds from polyethers, polyesters a

Separation of hydrocarbon mixtures by alkyl displacement

Separation of isomers, e. g., phenethyl bromide from 1-phenyl-1-

Separation of resorcinol from non-extractable impurities

Separation of the products of polyamide ammonolysis