Fabric softener active composition and method for making it

US9441187B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Hans-Jurgen Kohle · Leingarten, DE
• Ulrike Kottke · Geislitz, DE
• Dirk Kuppert · Frankfurt, DE
• Dietmar Träumer · Rodenbach, DE
• Kurt Seidel · Goldkronach, DE
• Axel Euler · Steinau an der Straße, DE

Key dates

• Filing date: Apr 24, 2013
• Grant date: Sep 13, 2016
• Expiry date: Apr 24, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D3/33
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Reacting at least one tris-(2-hydroxyethyl)-amine fatty acid ester with dimethylsulfate at a molar ratio of dimethylsulfate to amine nitrogen of from 0.79 to 0.94 until the reaction mixture has a total amine number of from 7 to 20 mg KOH/g provides novel fabric softener active compositions with a low content of methanol, comprising from 65 to 98% by weight of tris-(2-hydroxyethyl)-methylammonium methylsulfate fatty acid esters and from 1 to 1500 ppm methanol.