Preparation of pourable choline chloride/silica powders

US4775540A · kind A · utility

Assignee

• BASF SE

Inventors

• Otto Hertel · Ludwigshafen, DE
• Gerhard Jeschek · Havelsee, DE
• Walter Klink · Birkenheide, DE
• Wolfgang Koernig · Dossenheim, DE
• Theodor Weber · Ludwigshafen, DE
• Fritz Rateike · Lampertheim, DE

Key dates

• Filing date: Apr 3, 1987
• Grant date: Oct 4, 1988
• Expiry date: Apr 3, 2007

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S426/807
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A process for the preparation of pourable choline chloride/silica powders by mixing silica with choline chloride and, where appropriate, drying this mixture, wherein spray-dried or fluidized bed-dried silica which has a particle size of from 30 to 250 .mu.m is mixed with an aqueous choline chloride solution which contains from 70 to 80% by weight, based on the solution, of choline chloride and is at from 40.degree. to 80.degree. C., thereafter from 0.05 to 0.4% by weight, based on the mixture, of magnesium stearate or calcium stearate is added and, if appropriate, the resulting mixture is dried.