Preparation of lubricating agents for leathers and furs

US4451261A · kind A · utility

Assignee

• Henkel AG & Co. KGaA · DE

Inventors

• Wolf-Dieter Willmund · Düsseldorf, DE
• Manfred Biermann · Wiesloch, DE
• Horst Baumann · Leichlingen, DE
• Hans-Herbert Friese · Monheim, DE
• Friedrich Pieper · Langenfeld, DE

Key dates

• Filing date: Apr 4, 1983
• Grant date: May 29, 1984
• Expiry date: Apr 4, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C309/00
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

This invention relates to a process for preparing sulfonated lubricating agents for leather and tanned furs consisting of the steps of: PA0 (a) chlorinating natural or synthetic higher fatty acids or esters of higher fatty acids having chain lengths of from 8 to 24 carbon atoms containing olefinically unsaturated fractions, up to saturation of the double bonds; PA0 (b) sulfochlorinating the chlorinated product from step (a) with chlorine and SO.sub.2 at a temperature of from about 20.degree. to 90.degree. C., optionally under UV-radiation, for a time sufficient to obtain a compound having a chlorine content of from about 5 to 30 percent by weight and a content of SO.sub.2 Cl groups of from about 1 to 20 percent by weight, the ratio of chlorine atoms to SO.sub.2 Cl groups being from about 0.7:1 to 70:1; and PA0 (c) saponifying the product from step (b) to form a water-emulsifiable alkali metal, ammonium, or lower alkyl-ammonium salt of the product of step (b).