Polyether urethane, process for its preparation, flow-out agent and use of the polyether urethane

US5879754A · kind A · utility

Assignees

• BASF Lacke · DE
• Farben AG · DE

Inventors

• Michael Geist · Munster, DE
• Gunther Ott · Hachenburg, DE
• Helmut Fobbe · Munster, DE
• Klaus Arlt · Senden, DE
• Udo Strauss · Munster, DE
• Klaus Cibura · Southfield, US

Key dates

• Filing date: Aug 22, 1994
• Grant date: Mar 9, 1999
• Expiry date: Aug 22, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D7/47
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a polyether urethane of the general formula ##STR1## wherein R.sup.1 denotes H or an alkyd (sic) radical of 1 to 8 carbon atoms, PA1 R.sup.2 denotes an alkylene radical of 2 to 10 carbon atoms or a cycloalkylene radical of 6 to 20 carbon atoms or an arylene radical of 6 to 20 carbon atoms, PA1 R.sup.3, R.sup.4 denote an optionally substituted alkyl radical of 1 to 8 carbon atoms or a joint ring whose members are R.sup.3 and R.sup.4, PA1 n denotes 2 to 1800 PA1 m denotes 1 to 15. The invention further relates to a process for its preparation, to a flow-out agent for water-borne paints and to the use of the polyether urethanes as flow-out agents in water-borne, cathodically depositable electro-coating paints.