Aromatic aldehyde resins and their use as emulsion breakers

US6465528B1 · kind B1 · utility

Assignee

• Clariant Corporation · DE

Inventors

• Frank Holtrup · Hamburg, DE
• Elisabeth Wasmund · Altötting, DE
• Wolfram Baumgärtner · Altötting, DE
• Michael Feustel · Kelkheim, DE

Key dates

• Filing date: Apr 14, 2000
• Grant date: Oct 15, 2002
• Expiry date: Apr 14, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G10/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to resins obtained by reacting a compound of formula 1 with an aldehyde and alkoxylating, in any order: whereinX is —OH,Y is ortho-, meta- or para- to X and is a radical of formula 4, wherein R5 is a C1-C30-alkyl, C2-C30-alkenyl, C6-C18-aryl, or C7-C30-alkylaryl. The resin has a molecular mass from 250 to 100,000 and is useful in methods of breaking oil-water emulsions.