Process for the preparation of sump product

US4180438A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Hans-Walter Brandt · Odenthal, DE
• Ludwig Deibele · Neunburg vorm Wald, DE
• Kurt Toepffer · Leverkusen, DE
• Karl-Heinz Steinacker · Leverkusen, DE

Key dates

• Filing date: Sep 16, 1976
• Grant date: Dec 25, 1979
• Expiry date: Sep 16, 1996

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S203/90
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A thin layer evaporator which has a vapor lock above the solvent inlet is used for the preparation of distillate-free sump product which is obtained as solid from the concentration of solutions of water, organic substances and non-volatile constituents and dissolved in solvents.