Method of separating active hydrogen compounds from heterogeneous mixtures also containing compounds which do not contain active hydrogens

US4116811A · kind A · utility

Inventors

• Hans Schaefer · Hanau, DE
• Axel Vogts · Eschweiler, DE

Key dates

• Filing date: Feb 4, 1977
• Grant date: Sep 26, 1978
• Expiry date: Feb 4, 1997

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G65/26
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Organic compounds having active hydrogen are separated from heterogeneous mixtures of organic compounds, such as tar, which also contain organic compounds which do not have active hydrogen. The method involves preferential conversion of the active hydrogen compounds to soluble compounds by reaction with a reagent which is an alkene oxide or ethyleneimine, introducing a solvent for the soluble compounds whereby two phases are formed, and then separating the phases.