Huminates, process and uses

US5284651A · kind A · utility

Assignee

• Rutgerswerke Aktiengesellschaft · DE

Inventors

• Urs N. Riede · Schallstadt, DE
• Bernhard Seubert · Edingen-Neckarhausen, DE

Key dates

• Filing date: Oct 14, 1992
• Grant date: Feb 8, 1994
• Expiry date: Oct 14, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C02F1/285
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Physiologically active, non-toxic, non-teratogenic and non-mutagenic huminates produced by oxidation of polyvalent phenols in aqueous alkaline medium at a reaction temperature under 40.degree. C., the pH value of the reaction medium always being over 9.0 during the oxidation and the supply of oxidant being proportioned so that the content of the quinones corresponding to the polyvalent phenols is always less than 0.5%, based on the polyvalent phenols used, and that the oxidation reaction is stopped when the quinone concentration decreases despite oxidant supply.