Ether sulfonates as low-foam wetting agents

US4612142A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Robert Piorr · Ratingen, DE
• Hildegard van Delden · Hilden, DE
• Sabine Luttge · Wittlich, DE
• Bernd Bahr · Neuss, DE
• Ingo Wegener · Goldkronach, DE

Key dates

• Filing date: Sep 5, 1985
• Grant date: Sep 16, 1986
• Expiry date: Sep 5, 2005

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S516/03
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Ether sulfonates corresponding to the following general formula EQU R.sup.1 -- O(C.sub.n H.sub.2n O).sub.x --R.sup.2 --SO.sub.3 M (I) wherein R.sup.1 is a C.sub.1-6 alkyl, n is an integer of 2-4, x is an integer from 0-30, R.sup.2 is a C.sub.6-22 linear alkenylene, hydroxyalkylene or hydroxyalkenylene group, and M is hydrogen or an alkali metal cation, which can be obtained by sulfonation of olefinically unsaturated fatty alkyl lower alkyl ethers or fatty alkyl (polyoxyalkyl) lower alkyl ethers with sulfur trioxide and hydrolysis of the sultones formed, are particularly suitable for use as low-foam wetting agents in aqueous acidic or alkaline commercial-grade treatment preparations.