Surface-active compounds, a process for their preparation and their use

US4431565A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Siegfried Billenstein · Altötting, DE
• Hildegard Freundl · Altötting, DE
• Ignaz Wimmer · Winhöring, DE
• Fritz J. Gohlke · Burgkirchen an der Alz, DE
• Johannes Macenka · Burgkirchen an der Alz, DE

Key dates

• Filing date: Oct 25, 1982
• Grant date: Feb 14, 1984
• Expiry date: Oct 25, 2002

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G33/04
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The new compounds consist essentially of ethylene oxide/propylene oxide block polymer units and oxyalkyleneated alkylphenol/aldehyde resin units, which are linked by methylene groups. They are prepared by reacting a block polymer of ethylene oxide and propylene oxide and an oxyalkyleneated alkylphenol/aldehyde resin with formaldehyde. The new compounds constitute especially advantageous breaking agents for petroleum.