Anionic surfactants and detergents and cleaning agents containing same

US11174451B2 · kind B2 · utility

Assignee

• Henkel AG & Co. KGaA · DE

Inventors

• Christian Kropf · Hilden, DE
• Alexander Schulz · Rietberg, DE
• Anna Klemmer · Dressendorf, DE
• Regina Palkovits · Aachen, DE
• Peter Hausoul · Landgraaf, NL
• Lukas Kipshagen · Aachen, DE

Key dates

• Filing date: Feb 12, 2019
• Grant date: Nov 16, 2021
• Expiry date: Jul 25, 2039

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J29/7007
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

An anionic surfactant of general formula (I) in which n and m are, independently of one another, numbers from 0 to 17 and 2<n+m<20, and X+ is a charge-balancing cation. The invention also relates to a production method by way of: the acid-catalysed reaction of 2,5-bis(hydroxymethyl) tetrahydrofuran with an alkene having 5 to 22 C atoms in equimolar amounts, at an increased temperature; subsequent sulphation with a sulphating agent; and optional neutralisation by a subsequent reaction with X+OH− or X+2 CO2−3, where X+ is an alkali metal cation or a group N+R1R2R3, in which R1, R2 and R3 are, independently of one another, hydrogen, an alkyl group with 1 to 6 C atoms, or a hydroxyalkyl group with 2 to 6 C atoms. Detergents or cleaning agents containing—the surfactant, and the use of same to improve the performance of the detergents or cleaning agents, are also disclosed.